/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-name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:01:02,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:01:02,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:01:02,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:01:02,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:01:02,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:01:02,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:01:02,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:01:02,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:01:02,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:01:02,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:01:02,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:01:02,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:01:02,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:01:02,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:01:02,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:01:02,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:01:02,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:01:02,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:01:02,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:01:02,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:01:02,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:01:02,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:01:02,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:01:02,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:01:02,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:01:02,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:01:02,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:01:02,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:01:02,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:01:02,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:01:02,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:01:02,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:01:02,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:01:02,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:01:02,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:01:02,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:01:02,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:01:02,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:01:02,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:01:02,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:01:02,690 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 09:01:02,708 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:01:02,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:01:02,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:01:02,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:01:02,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:01:02,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:01:02,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:01:02,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:01:02,711 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:01:02,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:01:02,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:01:02,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:01:02,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:01:02,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:01:02,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:01:02,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:01:02,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:01:02,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:01:02,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:01:02,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:01:02,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:01:02,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:01:02,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:01:02,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:01:02,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:01:02,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:01:02,925 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:01:02,926 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:01:02,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-01-28 09:01:03,962 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:01:04,089 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:01:04,089 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-01-28 09:01:04,094 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef23ef1ca/41c82d2e05e340ada8fbca535a21a827/FLAG57ee62dfa [2023-01-28 09:01:04,109 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef23ef1ca/41c82d2e05e340ada8fbca535a21a827 [2023-01-28 09:01:04,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:01:04,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:01:04,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:01:04,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:01:04,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:01:04,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ab8ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04, skipping insertion in model container [2023-01-28 09:01:04,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:01:04,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:01:04,262 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-name-comparator-subst.wvr.c[4836,4849] [2023-01-28 09:01:04,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:01:04,276 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:01:04,296 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-name-comparator-subst.wvr.c[4836,4849] [2023-01-28 09:01:04,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:01:04,321 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:01:04,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04 WrapperNode [2023-01-28 09:01:04,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:01:04,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:01:04,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:01:04,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:01:04,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,355 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 316 [2023-01-28 09:01:04,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:01:04,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:01:04,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:01:04,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:01:04,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:01:04,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:01:04,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:01:04,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:01:04,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (1/1) ... [2023-01-28 09:01:04,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:01:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:01:04,412 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 09:01:04,418 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 09:01:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:01:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:01:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:01:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:01:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:01:04,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:01:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:01:04,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:01:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:01:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:01:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:01:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:01:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:01:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:01:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:01:04,454 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 09:01:04,594 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:01:04,622 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:01:05,037 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:01:05,046 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:01:05,046 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 09:01:05,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:01:05 BoogieIcfgContainer [2023-01-28 09:01:05,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:01:05,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:01:05,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:01:05,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:01:05,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:01:04" (1/3) ... [2023-01-28 09:01:05,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2230c496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:01:05, skipping insertion in model container [2023-01-28 09:01:05,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:04" (2/3) ... [2023-01-28 09:01:05,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2230c496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:01:05, skipping insertion in model container [2023-01-28 09:01:05,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:01:05" (3/3) ... [2023-01-28 09:01:05,053 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-01-28 09:01:05,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:01:05,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:01:05,065 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:01:05,141 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:01:05,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 360 transitions, 744 flow [2023-01-28 09:01:05,291 INFO L130 PetriNetUnfolder]: 26/357 cut-off events. [2023-01-28 09:01:05,291 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:05,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 357 events. 26/357 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 808 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-01-28 09:01:05,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 360 transitions, 744 flow [2023-01-28 09:01:05,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 347 transitions, 712 flow [2023-01-28 09:01:05,322 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:01:05,336 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 347 transitions, 712 flow [2023-01-28 09:01:05,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 347 transitions, 712 flow [2023-01-28 09:01:05,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 347 transitions, 712 flow [2023-01-28 09:01:05,398 INFO L130 PetriNetUnfolder]: 26/347 cut-off events. [2023-01-28 09:01:05,399 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:05,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 26/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 807 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-01-28 09:01:05,415 INFO L119 LiptonReduction]: Number of co-enabled transitions 28350 [2023-01-28 09:01:12,851 INFO L134 LiptonReduction]: Checked pairs total: 26332 [2023-01-28 09:01:12,851 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-01-28 09:01:12,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:01:12,865 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;@12d9223b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:01:12,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:01:12,869 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-28 09:01:12,869 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:12,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:12,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:12,870 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 09:01:12,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash 938001691, now seen corresponding path program 1 times [2023-01-28 09:01:12,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:12,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8214995] [2023-01-28 09:01:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:12,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:13,222 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 09:01:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:13,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8214995] [2023-01-28 09:01:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8214995] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:13,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:13,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:01:13,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474010237] [2023-01-28 09:01:13,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:13,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:01:13,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:01:13,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:01:13,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 771 [2023-01-28 09:01:13,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:13,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 771 [2023-01-28 09:01:13,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:13,337 INFO L130 PetriNetUnfolder]: 221/328 cut-off events. [2023-01-28 09:01:13,337 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-01-28 09:01:13,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 138 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 534. Up to 328 conditions per place. [2023-01-28 09:01:13,342 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-28 09:01:13,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2023-01-28 09:01:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:01:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:01:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-01-28 09:01:13,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301772589710333 [2023-01-28 09:01:13,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-01-28 09:01:13,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-01-28 09:01:13,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:13,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-01-28 09:01:13,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,375 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 995 transitions. [2023-01-28 09:01:13,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2023-01-28 09:01:13,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:01:13,379 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-01-28 09:01:13,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-01-28 09:01:13,383 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-28 09:01:13,383 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-01-28 09:01:13,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:13,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:13,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:01:13,384 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 09:01:13,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1524160958, now seen corresponding path program 1 times [2023-01-28 09:01:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549711752] [2023-01-28 09:01:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:01:13,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:13,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549711752] [2023-01-28 09:01:13,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549711752] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:01:13,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35156551] [2023-01-28 09:01:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:13,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:01:13,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:01:13,546 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 09:01:13,561 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 09:01:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:13,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 09:01:13,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:01:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:01:13,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:01:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:01:13,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35156551] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:01:13,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:01:13,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 09:01:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203344561] [2023-01-28 09:01:13,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:01:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:13,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:13,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 771 [2023-01-28 09:01:13,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:13,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 771 [2023-01-28 09:01:13,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:13,821 INFO L130 PetriNetUnfolder]: 221/330 cut-off events. [2023-01-28 09:01:13,821 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:13,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 330 events. 221/330 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 138 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 673. Up to 328 conditions per place. [2023-01-28 09:01:13,822 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-28 09:01:13,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2023-01-28 09:01:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:01:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:01:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1644 transitions. [2023-01-28 09:01:13,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264591439688716 [2023-01-28 09:01:13,826 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1644 transitions. [2023-01-28 09:01:13,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1644 transitions. [2023-01-28 09:01:13,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:13,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1644 transitions. [2023-01-28 09:01:13,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 328.8) internal successors, (1644), 5 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,835 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,835 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 1644 transitions. [2023-01-28 09:01:13,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2023-01-28 09:01:13,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:13,836 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2023-01-28 09:01:13,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-28 09:01:13,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-01-28 09:01:13,836 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2023-01-28 09:01:13,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:13,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:13,838 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:13,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 09:01:14,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:01:14,043 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 09:01:14,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash -793936030, now seen corresponding path program 2 times [2023-01-28 09:01:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:14,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681098927] [2023-01-28 09:01:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:14,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:14,686 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 09:01:14,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:14,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681098927] [2023-01-28 09:01:14,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681098927] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:14,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:14,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:01:14,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021315579] [2023-01-28 09:01:14,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:14,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:01:14,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:14,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:01:14,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:01:14,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 09:01:14,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:14,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:14,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 09:01:14,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:14,969 INFO L130 PetriNetUnfolder]: 391/589 cut-off events. [2023-01-28 09:01:14,969 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-28 09:01:14,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 589 events. 391/589 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1862 event pairs, 138 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1190. Up to 331 conditions per place. [2023-01-28 09:01:14,972 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 59 selfloop transitions, 5 changer transitions 10/74 dead transitions. [2023-01-28 09:01:14,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 74 transitions, 341 flow [2023-01-28 09:01:14,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:01:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:01:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1704 transitions. [2023-01-28 09:01:14,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36835278858625164 [2023-01-28 09:01:14,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1704 transitions. [2023-01-28 09:01:14,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1704 transitions. [2023-01-28 09:01:14,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:14,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1704 transitions. [2023-01-28 09:01:14,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:14,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:14,985 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:14,985 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 6 states and 1704 transitions. [2023-01-28 09:01:14,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 74 transitions, 341 flow [2023-01-28 09:01:14,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 331 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:14,988 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 116 flow [2023-01-28 09:01:14,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-01-28 09:01:14,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-01-28 09:01:14,989 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 116 flow [2023-01-28 09:01:14,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:14,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:14,990 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:01:14,990 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 09:01:14,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1410407670, now seen corresponding path program 3 times [2023-01-28 09:01:14,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:14,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978326204] [2023-01-28 09:01:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:14,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:15,530 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 09:01:15,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:15,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978326204] [2023-01-28 09:01:15,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978326204] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:15,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:15,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:01:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523049804] [2023-01-28 09:01:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:01:15,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:01:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:01:15,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 09:01:15,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:15,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:15,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 09:01:15,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:15,779 INFO L130 PetriNetUnfolder]: 598/896 cut-off events. [2023-01-28 09:01:15,780 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-01-28 09:01:15,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 896 events. 598/896 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3127 event pairs, 238 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 2416. Up to 553 conditions per place. [2023-01-28 09:01:15,784 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 61 selfloop transitions, 7 changer transitions 10/78 dead transitions. [2023-01-28 09:01:15,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 78 transitions, 416 flow [2023-01-28 09:01:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:01:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:01:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2023-01-28 09:01:15,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3674881106787722 [2023-01-28 09:01:15,787 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2023-01-28 09:01:15,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2023-01-28 09:01:15,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:15,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2023-01-28 09:01:15,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:15,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:15,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:15,797 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 116 flow. Second operand 6 states and 1700 transitions. [2023-01-28 09:01:15,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 78 transitions, 416 flow [2023-01-28 09:01:15,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 395 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:15,801 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 158 flow [2023-01-28 09:01:15,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-01-28 09:01:15,804 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-01-28 09:01:15,804 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 158 flow [2023-01-28 09:01:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:15,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:15,805 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:15,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:01:15,805 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 09:01:15,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1289977774, now seen corresponding path program 4 times [2023-01-28 09:01:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:15,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738576443] [2023-01-28 09:01:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:15,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:16,450 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 09:01:16,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:16,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738576443] [2023-01-28 09:01:16,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738576443] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:16,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:16,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970242497] [2023-01-28 09:01:16,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:01:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:16,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:01:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:01:16,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 771 [2023-01-28 09:01:16,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 267.625) internal successors, (2141), 8 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:16,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:16,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 771 [2023-01-28 09:01:16,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:16,989 INFO L130 PetriNetUnfolder]: 1264/1955 cut-off events. [2023-01-28 09:01:16,989 INFO L131 PetriNetUnfolder]: For 2770/2770 co-relation queries the response was YES. [2023-01-28 09:01:16,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 1955 events. 1264/1955 cut-off events. For 2770/2770 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8935 event pairs, 428 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 6222. Up to 875 conditions per place. [2023-01-28 09:01:16,998 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 108 selfloop transitions, 14 changer transitions 3/125 dead transitions. [2023-01-28 09:01:16,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 125 transitions, 822 flow [2023-01-28 09:01:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1943 transitions. [2023-01-28 09:01:17,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3600148230498425 [2023-01-28 09:01:17,003 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1943 transitions. [2023-01-28 09:01:17,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1943 transitions. [2023-01-28 09:01:17,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:17,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1943 transitions. [2023-01-28 09:01:17,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.57142857142856) internal successors, (1943), 7 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:17,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:17,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:17,013 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 158 flow. Second operand 7 states and 1943 transitions. [2023-01-28 09:01:17,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 125 transitions, 822 flow [2023-01-28 09:01:17,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 125 transitions, 771 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:17,021 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 298 flow [2023-01-28 09:01:17,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-01-28 09:01:17,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2023-01-28 09:01:17,022 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 298 flow [2023-01-28 09:01:17,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 267.625) internal successors, (2141), 8 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:17,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:17,023 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:17,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:01:17,023 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 09:01:17,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash 769737702, now seen corresponding path program 5 times [2023-01-28 09:01:17,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:17,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890794289] [2023-01-28 09:01:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:17,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:17,891 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 09:01:17,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890794289] [2023-01-28 09:01:17,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890794289] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:17,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:17,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:17,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855040918] [2023-01-28 09:01:17,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:17,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:01:17,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:01:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:01:17,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 771 [2023-01-28 09:01:17,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 263.625) internal successors, (2109), 8 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:17,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:17,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 771 [2023-01-28 09:01:17,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:18,747 INFO L130 PetriNetUnfolder]: 1619/2534 cut-off events. [2023-01-28 09:01:18,748 INFO L131 PetriNetUnfolder]: For 5277/5277 co-relation queries the response was YES. [2023-01-28 09:01:18,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 2534 events. 1619/2534 cut-off events. For 5277/5277 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12597 event pairs, 224 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 9350. Up to 1584 conditions per place. [2023-01-28 09:01:18,769 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 78 selfloop transitions, 33 changer transitions 3/114 dead transitions. [2023-01-28 09:01:18,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 836 flow [2023-01-28 09:01:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1902 transitions. [2023-01-28 09:01:18,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35241801000555867 [2023-01-28 09:01:18,775 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1902 transitions. [2023-01-28 09:01:18,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1902 transitions. [2023-01-28 09:01:18,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:18,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1902 transitions. [2023-01-28 09:01:18,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 271.7142857142857) internal successors, (1902), 7 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:18,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:18,787 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:18,787 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 298 flow. Second operand 7 states and 1902 transitions. [2023-01-28 09:01:18,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 836 flow [2023-01-28 09:01:18,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 813 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:18,797 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 596 flow [2023-01-28 09:01:18,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=596, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-01-28 09:01:18,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2023-01-28 09:01:18,800 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 596 flow [2023-01-28 09:01:18,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.625) internal successors, (2109), 8 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:18,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:18,813 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:18,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:01:18,814 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 09:01:18,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1478770490, now seen corresponding path program 6 times [2023-01-28 09:01:18,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:18,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282857524] [2023-01-28 09:01:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:18,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:19,234 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 09:01:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282857524] [2023-01-28 09:01:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282857524] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:01:19,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431050407] [2023-01-28 09:01:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:19,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:01:19,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:19,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:01:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:01:19,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 09:01:19,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:19,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:19,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 09:01:19,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:19,734 INFO L130 PetriNetUnfolder]: 1623/2565 cut-off events. [2023-01-28 09:01:19,734 INFO L131 PetriNetUnfolder]: For 9351/9351 co-relation queries the response was YES. [2023-01-28 09:01:19,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11143 conditions, 2565 events. 1623/2565 cut-off events. For 9351/9351 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12669 event pairs, 490 based on Foata normal form. 3/2218 useless extension candidates. Maximal degree in co-relation 11104. Up to 1223 conditions per place. [2023-01-28 09:01:19,751 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 92 selfloop transitions, 19 changer transitions 12/123 dead transitions. [2023-01-28 09:01:19,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 123 transitions, 1110 flow [2023-01-28 09:01:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:01:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:01:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1703 transitions. [2023-01-28 09:01:19,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3681366191093818 [2023-01-28 09:01:19,755 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1703 transitions. [2023-01-28 09:01:19,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1703 transitions. [2023-01-28 09:01:19,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:19,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1703 transitions. [2023-01-28 09:01:19,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 6 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:19,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:19,762 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:19,762 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 596 flow. Second operand 6 states and 1703 transitions. [2023-01-28 09:01:19,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 123 transitions, 1110 flow [2023-01-28 09:01:19,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 123 transitions, 1046 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:19,782 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 676 flow [2023-01-28 09:01:19,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=676, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-01-28 09:01:19,783 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-01-28 09:01:19,783 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 676 flow [2023-01-28 09:01:19,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:19,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:19,783 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:19,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:01:19,784 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 09:01:19,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:19,785 INFO L85 PathProgramCache]: Analyzing trace with hash 337044488, now seen corresponding path program 7 times [2023-01-28 09:01:19,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:19,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545348147] [2023-01-28 09:01:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:19,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:20,170 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 09:01:20,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:20,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545348147] [2023-01-28 09:01:20,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545348147] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:20,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:20,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:01:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083690760] [2023-01-28 09:01:20,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:01:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:01:20,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:01:20,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:01:20,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 676 flow. Second operand has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:20,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:20,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:01:20,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:20,657 INFO L130 PetriNetUnfolder]: 1595/2508 cut-off events. [2023-01-28 09:01:20,657 INFO L131 PetriNetUnfolder]: For 10169/10169 co-relation queries the response was YES. [2023-01-28 09:01:20,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 2508 events. 1595/2508 cut-off events. For 10169/10169 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12343 event pairs, 530 based on Foata normal form. 2/2162 useless extension candidates. Maximal degree in co-relation 11416. Up to 1479 conditions per place. [2023-01-28 09:01:20,676 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 97 selfloop transitions, 29 changer transitions 15/141 dead transitions. [2023-01-28 09:01:20,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 1348 flow [2023-01-28 09:01:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:01:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:01:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1683 transitions. [2023-01-28 09:01:20,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638132295719844 [2023-01-28 09:01:20,680 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1683 transitions. [2023-01-28 09:01:20,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1683 transitions. [2023-01-28 09:01:20,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:20,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1683 transitions. [2023-01-28 09:01:20,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.5) internal successors, (1683), 6 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:20,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:20,688 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:20,688 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 676 flow. Second operand 6 states and 1683 transitions. [2023-01-28 09:01:20,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 1348 flow [2023-01-28 09:01:20,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 141 transitions, 1310 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:20,704 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 828 flow [2023-01-28 09:01:20,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=828, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-01-28 09:01:20,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2023-01-28 09:01:20,706 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 828 flow [2023-01-28 09:01:20,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:20,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:20,706 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:20,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:01:20,707 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 09:01:20,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash -97285908, now seen corresponding path program 8 times [2023-01-28 09:01:20,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060340374] [2023-01-28 09:01:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:21,136 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 09:01:21,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:21,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060340374] [2023-01-28 09:01:21,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060340374] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:21,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:21,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:01:21,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398803804] [2023-01-28 09:01:21,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:21,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:01:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:01:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:01:21,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 09:01:21,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:21,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:21,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 09:01:21,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:21,562 INFO L130 PetriNetUnfolder]: 1565/2439 cut-off events. [2023-01-28 09:01:21,563 INFO L131 PetriNetUnfolder]: For 10775/10775 co-relation queries the response was YES. [2023-01-28 09:01:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 2439 events. 1565/2439 cut-off events. For 10775/10775 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11714 event pairs, 530 based on Foata normal form. 3/2096 useless extension candidates. Maximal degree in co-relation 11305. Up to 1479 conditions per place. [2023-01-28 09:01:21,577 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 91 selfloop transitions, 26 changer transitions 15/132 dead transitions. [2023-01-28 09:01:21,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 132 transitions, 1328 flow [2023-01-28 09:01:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:01:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:01:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1703 transitions. [2023-01-28 09:01:21,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3681366191093818 [2023-01-28 09:01:21,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1703 transitions. [2023-01-28 09:01:21,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1703 transitions. [2023-01-28 09:01:21,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:21,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1703 transitions. [2023-01-28 09:01:21,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 6 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:21,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:21,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:21,588 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 828 flow. Second operand 6 states and 1703 transitions. [2023-01-28 09:01:21,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 132 transitions, 1328 flow [2023-01-28 09:01:21,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1320 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:21,604 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 869 flow [2023-01-28 09:01:21,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-01-28 09:01:21,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-01-28 09:01:21,604 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 869 flow [2023-01-28 09:01:21,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:21,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:21,605 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:21,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:01:21,605 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 09:01:21,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1951623602, now seen corresponding path program 9 times [2023-01-28 09:01:21,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:21,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414758808] [2023-01-28 09:01:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:21,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:21,918 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 09:01:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414758808] [2023-01-28 09:01:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414758808] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:21,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:21,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:01:21,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274634774] [2023-01-28 09:01:21,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:21,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:01:21,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:21,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:01:21,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:01:21,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 09:01:21,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:21,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:21,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 09:01:21,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:22,292 INFO L130 PetriNetUnfolder]: 1537/2381 cut-off events. [2023-01-28 09:01:22,292 INFO L131 PetriNetUnfolder]: For 12541/12541 co-relation queries the response was YES. [2023-01-28 09:01:22,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 2381 events. 1537/2381 cut-off events. For 12541/12541 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11179 event pairs, 484 based on Foata normal form. 3/2040 useless extension candidates. Maximal degree in co-relation 11510. Up to 1223 conditions per place. [2023-01-28 09:01:22,306 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 88 selfloop transitions, 26 changer transitions 12/126 dead transitions. [2023-01-28 09:01:22,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 1333 flow [2023-01-28 09:01:22,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:01:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:01:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1701 transitions. [2023-01-28 09:01:22,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36770428015564205 [2023-01-28 09:01:22,310 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1701 transitions. [2023-01-28 09:01:22,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1701 transitions. [2023-01-28 09:01:22,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:22,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1701 transitions. [2023-01-28 09:01:22,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:22,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:22,317 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:22,317 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 869 flow. Second operand 6 states and 1701 transitions. [2023-01-28 09:01:22,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 1333 flow [2023-01-28 09:01:22,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 1290 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 09:01:22,335 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 920 flow [2023-01-28 09:01:22,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=920, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-01-28 09:01:22,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-28 09:01:22,336 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 920 flow [2023-01-28 09:01:22,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:22,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:22,336 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:22,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:01:22,337 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 09:01:22,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1598507779, now seen corresponding path program 1 times [2023-01-28 09:01:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:22,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053150339] [2023-01-28 09:01:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:22,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:22,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:22,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053150339] [2023-01-28 09:01:22,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053150339] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:22,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:22,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:22,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499379516] [2023-01-28 09:01:22,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:22,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:01:22,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:01:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:01:22,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:22,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:22,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:22,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:22,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:23,244 INFO L130 PetriNetUnfolder]: 2107/3260 cut-off events. [2023-01-28 09:01:23,245 INFO L131 PetriNetUnfolder]: For 20971/20971 co-relation queries the response was YES. [2023-01-28 09:01:23,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16124 conditions, 3260 events. 2107/3260 cut-off events. For 20971/20971 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16865 event pairs, 424 based on Foata normal form. 10/2800 useless extension candidates. Maximal degree in co-relation 16075. Up to 1161 conditions per place. [2023-01-28 09:01:23,261 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 217 selfloop transitions, 23 changer transitions 0/240 dead transitions. [2023-01-28 09:01:23,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 240 transitions, 2960 flow [2023-01-28 09:01:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:23,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2014 transitions. [2023-01-28 09:01:23,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3731702797850658 [2023-01-28 09:01:23,266 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2014 transitions. [2023-01-28 09:01:23,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2014 transitions. [2023-01-28 09:01:23,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:23,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2014 transitions. [2023-01-28 09:01:23,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.7142857142857) internal successors, (2014), 7 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:23,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:23,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:23,274 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 920 flow. Second operand 7 states and 2014 transitions. [2023-01-28 09:01:23,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 240 transitions, 2960 flow [2023-01-28 09:01:23,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 240 transitions, 2863 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:23,301 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 1212 flow [2023-01-28 09:01:23,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1212, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-01-28 09:01:23,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-01-28 09:01:23,302 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 1212 flow [2023-01-28 09:01:23,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:23,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:23,303 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:23,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:01:23,303 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 09:01:23,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1705182456, now seen corresponding path program 1 times [2023-01-28 09:01:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:23,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801535765] [2023-01-28 09:01:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801535765] [2023-01-28 09:01:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801535765] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:23,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410936393] [2023-01-28 09:01:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:23,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:01:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:23,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:01:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:01:23,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:23,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 1212 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:23,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:23,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:24,249 INFO L130 PetriNetUnfolder]: 2345/3622 cut-off events. [2023-01-28 09:01:24,249 INFO L131 PetriNetUnfolder]: For 22615/22615 co-relation queries the response was YES. [2023-01-28 09:01:24,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 3622 events. 2345/3622 cut-off events. For 22615/22615 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18662 event pairs, 320 based on Foata normal form. 4/3332 useless extension candidates. Maximal degree in co-relation 18594. Up to 1578 conditions per place. [2023-01-28 09:01:24,276 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 143 selfloop transitions, 28 changer transitions 0/171 dead transitions. [2023-01-28 09:01:24,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 171 transitions, 2057 flow [2023-01-28 09:01:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 09:01:24,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 09:01:24,282 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 09:01:24,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 09:01:24,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:24,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 09:01:24,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:24,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:24,292 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:24,292 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 1212 flow. Second operand 7 states and 1995 transitions. [2023-01-28 09:01:24,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 171 transitions, 2057 flow [2023-01-28 09:01:24,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 171 transitions, 2007 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:24,346 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 1404 flow [2023-01-28 09:01:24,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1404, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2023-01-28 09:01:24,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2023-01-28 09:01:24,346 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 1404 flow [2023-01-28 09:01:24,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:24,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:24,347 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:24,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:01:24,347 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 09:01:24,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:24,348 INFO L85 PathProgramCache]: Analyzing trace with hash 740274830, now seen corresponding path program 2 times [2023-01-28 09:01:24,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:24,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564816847] [2023-01-28 09:01:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:24,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:24,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564816847] [2023-01-28 09:01:24,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564816847] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:24,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:24,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:24,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186260745] [2023-01-28 09:01:24,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:24,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:24,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:24,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:24,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:01:24,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 1404 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:24,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:24,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:01:24,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:25,484 INFO L130 PetriNetUnfolder]: 2379/3710 cut-off events. [2023-01-28 09:01:25,484 INFO L131 PetriNetUnfolder]: For 32210/32210 co-relation queries the response was YES. [2023-01-28 09:01:25,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 3710 events. 2379/3710 cut-off events. For 32210/32210 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19661 event pairs, 354 based on Foata normal form. 6/3410 useless extension candidates. Maximal degree in co-relation 19709. Up to 1201 conditions per place. [2023-01-28 09:01:25,504 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 166 selfloop transitions, 88 changer transitions 3/257 dead transitions. [2023-01-28 09:01:25,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 257 transitions, 3337 flow [2023-01-28 09:01:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:01:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:01:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3064 transitions. [2023-01-28 09:01:25,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36127815116141965 [2023-01-28 09:01:25,509 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3064 transitions. [2023-01-28 09:01:25,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3064 transitions. [2023-01-28 09:01:25,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:25,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3064 transitions. [2023-01-28 09:01:25,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 278.54545454545456) internal successors, (3064), 11 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:25,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:25,520 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:25,520 INFO L175 Difference]: Start difference. First operand has 103 places, 106 transitions, 1404 flow. Second operand 11 states and 3064 transitions. [2023-01-28 09:01:25,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 257 transitions, 3337 flow [2023-01-28 09:01:25,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 257 transitions, 3171 flow, removed 58 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:25,567 INFO L231 Difference]: Finished difference. Result has 119 places, 156 transitions, 2288 flow [2023-01-28 09:01:25,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2288, PETRI_PLACES=119, PETRI_TRANSITIONS=156} [2023-01-28 09:01:25,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2023-01-28 09:01:25,568 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 156 transitions, 2288 flow [2023-01-28 09:01:25,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:25,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:25,569 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:25,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 09:01:25,569 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 09:01:25,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1868110369, now seen corresponding path program 2 times [2023-01-28 09:01:25,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:25,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331176436] [2023-01-28 09:01:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:25,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:25,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331176436] [2023-01-28 09:01:25,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331176436] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:25,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:25,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:25,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892650819] [2023-01-28 09:01:25,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:25,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:01:25,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:25,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:01:25,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:01:25,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:01:25,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 156 transitions, 2288 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:25,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:25,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:01:25,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:26,579 INFO L130 PetriNetUnfolder]: 2632/4095 cut-off events. [2023-01-28 09:01:26,579 INFO L131 PetriNetUnfolder]: For 37908/37908 co-relation queries the response was YES. [2023-01-28 09:01:26,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23548 conditions, 4095 events. 2632/4095 cut-off events. For 37908/37908 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21943 event pairs, 360 based on Foata normal form. 10/4005 useless extension candidates. Maximal degree in co-relation 23483. Up to 1949 conditions per place. [2023-01-28 09:01:26,599 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 170 selfloop transitions, 62 changer transitions 0/232 dead transitions. [2023-01-28 09:01:26,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 232 transitions, 3301 flow [2023-01-28 09:01:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:26,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2023-01-28 09:01:26,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36335000926440614 [2023-01-28 09:01:26,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2023-01-28 09:01:26,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2023-01-28 09:01:26,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:26,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2023-01-28 09:01:26,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:26,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:26,610 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:26,610 INFO L175 Difference]: Start difference. First operand has 119 places, 156 transitions, 2288 flow. Second operand 7 states and 1961 transitions. [2023-01-28 09:01:26,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 232 transitions, 3301 flow [2023-01-28 09:01:26,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 232 transitions, 3149 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-01-28 09:01:26,682 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 2422 flow [2023-01-28 09:01:26,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2422, PETRI_PLACES=125, PETRI_TRANSITIONS=161} [2023-01-28 09:01:26,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2023-01-28 09:01:26,684 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 2422 flow [2023-01-28 09:01:26,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:26,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:26,685 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:26,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 09:01:26,685 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 09:01:26,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash -88271522, now seen corresponding path program 3 times [2023-01-28 09:01:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:26,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276170974] [2023-01-28 09:01:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:26,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:26,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276170974] [2023-01-28 09:01:26,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276170974] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:26,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:26,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:26,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609102657] [2023-01-28 09:01:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:26,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:26,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:26,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 161 transitions, 2422 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:26,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:26,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:26,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:27,723 INFO L130 PetriNetUnfolder]: 2656/4141 cut-off events. [2023-01-28 09:01:27,723 INFO L131 PetriNetUnfolder]: For 44803/44803 co-relation queries the response was YES. [2023-01-28 09:01:27,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23933 conditions, 4141 events. 2656/4141 cut-off events. For 44803/44803 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22373 event pairs, 510 based on Foata normal form. 8/4049 useless extension candidates. Maximal degree in co-relation 23867. Up to 1987 conditions per place. [2023-01-28 09:01:27,749 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 239 selfloop transitions, 45 changer transitions 0/284 dead transitions. [2023-01-28 09:01:27,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 284 transitions, 4336 flow [2023-01-28 09:01:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:01:27,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:01:27,753 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:01:27,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:01:27,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:27,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:01:27,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:27,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:27,760 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:27,761 INFO L175 Difference]: Start difference. First operand has 125 places, 161 transitions, 2422 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:01:27,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 284 transitions, 4336 flow [2023-01-28 09:01:27,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 284 transitions, 4206 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:27,834 INFO L231 Difference]: Finished difference. Result has 132 places, 171 transitions, 2637 flow [2023-01-28 09:01:27,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2637, PETRI_PLACES=132, PETRI_TRANSITIONS=171} [2023-01-28 09:01:27,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2023-01-28 09:01:27,835 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 171 transitions, 2637 flow [2023-01-28 09:01:27,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:27,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:27,835 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:27,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 09:01:27,835 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 09:01:27,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1399279322, now seen corresponding path program 4 times [2023-01-28 09:01:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:27,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206481853] [2023-01-28 09:01:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:27,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:28,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:28,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206481853] [2023-01-28 09:01:28,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206481853] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:28,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:28,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:28,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130716516] [2023-01-28 09:01:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:28,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:28,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:28,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 171 transitions, 2637 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:28,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:28,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:28,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:28,997 INFO L130 PetriNetUnfolder]: 2650/4135 cut-off events. [2023-01-28 09:01:28,997 INFO L131 PetriNetUnfolder]: For 44143/44143 co-relation queries the response was YES. [2023-01-28 09:01:29,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24232 conditions, 4135 events. 2650/4135 cut-off events. For 44143/44143 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22382 event pairs, 508 based on Foata normal form. 6/4041 useless extension candidates. Maximal degree in co-relation 24163. Up to 1987 conditions per place. [2023-01-28 09:01:29,029 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 229 selfloop transitions, 44 changer transitions 8/281 dead transitions. [2023-01-28 09:01:29,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 281 transitions, 4328 flow [2023-01-28 09:01:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:29,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 09:01:29,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 09:01:29,034 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 09:01:29,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 09:01:29,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:29,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 09:01:29,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:29,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:29,045 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:29,045 INFO L175 Difference]: Start difference. First operand has 132 places, 171 transitions, 2637 flow. Second operand 7 states and 2000 transitions. [2023-01-28 09:01:29,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 281 transitions, 4328 flow [2023-01-28 09:01:29,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 281 transitions, 4232 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-28 09:01:29,148 INFO L231 Difference]: Finished difference. Result has 136 places, 173 transitions, 2668 flow [2023-01-28 09:01:29,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2668, PETRI_PLACES=136, PETRI_TRANSITIONS=173} [2023-01-28 09:01:29,149 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-01-28 09:01:29,149 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 173 transitions, 2668 flow [2023-01-28 09:01:29,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:29,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:29,149 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:29,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 09:01:29,150 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 09:01:29,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1257207031, now seen corresponding path program 3 times [2023-01-28 09:01:29,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135313702] [2023-01-28 09:01:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135313702] [2023-01-28 09:01:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135313702] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687268138] [2023-01-28 09:01:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:29,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:29,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:29,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 173 transitions, 2668 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:29,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:29,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:29,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:30,225 INFO L130 PetriNetUnfolder]: 2661/4150 cut-off events. [2023-01-28 09:01:30,225 INFO L131 PetriNetUnfolder]: For 45163/45163 co-relation queries the response was YES. [2023-01-28 09:01:30,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24473 conditions, 4150 events. 2661/4150 cut-off events. For 45163/45163 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22466 event pairs, 480 based on Foata normal form. 10/4060 useless extension candidates. Maximal degree in co-relation 24403. Up to 1724 conditions per place. [2023-01-28 09:01:30,252 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 251 selfloop transitions, 42 changer transitions 0/293 dead transitions. [2023-01-28 09:01:30,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 293 transitions, 4464 flow [2023-01-28 09:01:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-28 09:01:30,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-28 09:01:30,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-28 09:01:30,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-28 09:01:30,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:30,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-28 09:01:30,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:30,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:30,261 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:30,261 INFO L175 Difference]: Start difference. First operand has 136 places, 173 transitions, 2668 flow. Second operand 7 states and 2009 transitions. [2023-01-28 09:01:30,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 293 transitions, 4464 flow [2023-01-28 09:01:30,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 293 transitions, 4372 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-01-28 09:01:30,425 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 2689 flow [2023-01-28 09:01:30,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2689, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2023-01-28 09:01:30,426 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2023-01-28 09:01:30,426 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 2689 flow [2023-01-28 09:01:30,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:30,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:30,426 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:30,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:01:30,427 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 09:01:30,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:30,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1947204471, now seen corresponding path program 4 times [2023-01-28 09:01:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:30,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993331019] [2023-01-28 09:01:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:30,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993331019] [2023-01-28 09:01:30,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993331019] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:30,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:30,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:30,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860381182] [2023-01-28 09:01:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:30,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:30,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:30,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 2689 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:30,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:30,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:30,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:31,408 INFO L130 PetriNetUnfolder]: 2661/4149 cut-off events. [2023-01-28 09:01:31,408 INFO L131 PetriNetUnfolder]: For 45314/45314 co-relation queries the response was YES. [2023-01-28 09:01:31,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 4149 events. 2661/4149 cut-off events. For 45314/45314 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 22461 event pairs, 476 based on Foata normal form. 10/4063 useless extension candidates. Maximal degree in co-relation 24355. Up to 1724 conditions per place. [2023-01-28 09:01:31,433 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 249 selfloop transitions, 39 changer transitions 0/288 dead transitions. [2023-01-28 09:01:31,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 288 transitions, 4422 flow [2023-01-28 09:01:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:01:31,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:01:31,436 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:01:31,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:01:31,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:31,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:01:31,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:31,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:31,442 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:31,442 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 2689 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:01:31,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 288 transitions, 4422 flow [2023-01-28 09:01:31,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 288 transitions, 4337 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 09:01:31,520 INFO L231 Difference]: Finished difference. Result has 142 places, 173 transitions, 2687 flow [2023-01-28 09:01:31,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2687, PETRI_PLACES=142, PETRI_TRANSITIONS=173} [2023-01-28 09:01:31,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2023-01-28 09:01:31,520 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 173 transitions, 2687 flow [2023-01-28 09:01:31,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:31,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:31,520 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:31,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 09:01:31,521 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 09:01:31,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1948393763, now seen corresponding path program 5 times [2023-01-28 09:01:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:31,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674810009] [2023-01-28 09:01:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:31,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:31,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:31,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674810009] [2023-01-28 09:01:31,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674810009] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:31,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:31,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091872889] [2023-01-28 09:01:31,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:31,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:31,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:01:31,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 173 transitions, 2687 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:31,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:31,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:01:31,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:32,539 INFO L130 PetriNetUnfolder]: 2828/4578 cut-off events. [2023-01-28 09:01:32,539 INFO L131 PetriNetUnfolder]: For 48786/48786 co-relation queries the response was YES. [2023-01-28 09:01:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26522 conditions, 4578 events. 2828/4578 cut-off events. For 48786/48786 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26803 event pairs, 442 based on Foata normal form. 4/4486 useless extension candidates. Maximal degree in co-relation 26450. Up to 1336 conditions per place. [2023-01-28 09:01:32,570 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 240 selfloop transitions, 59 changer transitions 1/300 dead transitions. [2023-01-28 09:01:32,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 300 transitions, 4672 flow [2023-01-28 09:01:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2023-01-28 09:01:32,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36335000926440614 [2023-01-28 09:01:32,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2023-01-28 09:01:32,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2023-01-28 09:01:32,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:32,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2023-01-28 09:01:32,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:32,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:32,578 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:32,578 INFO L175 Difference]: Start difference. First operand has 142 places, 173 transitions, 2687 flow. Second operand 7 states and 1961 transitions. [2023-01-28 09:01:32,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 300 transitions, 4672 flow [2023-01-28 09:01:32,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 300 transitions, 4523 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-01-28 09:01:32,690 INFO L231 Difference]: Finished difference. Result has 147 places, 187 transitions, 3009 flow [2023-01-28 09:01:32,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3009, PETRI_PLACES=147, PETRI_TRANSITIONS=187} [2023-01-28 09:01:32,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-01-28 09:01:32,691 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 187 transitions, 3009 flow [2023-01-28 09:01:32,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:32,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:32,691 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:32,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 09:01:32,691 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 09:01:32,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash 858781202, now seen corresponding path program 5 times [2023-01-28 09:01:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:32,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634857089] [2023-01-28 09:01:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:32,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:32,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:32,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634857089] [2023-01-28 09:01:32,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634857089] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:32,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:32,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:32,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044155846] [2023-01-28 09:01:32,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:32,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:32,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:32,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:32,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:32,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:32,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 187 transitions, 3009 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:32,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:32,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:32,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:33,673 INFO L130 PetriNetUnfolder]: 2809/4541 cut-off events. [2023-01-28 09:01:33,673 INFO L131 PetriNetUnfolder]: For 55597/55597 co-relation queries the response was YES. [2023-01-28 09:01:33,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26850 conditions, 4541 events. 2809/4541 cut-off events. For 55597/55597 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 26350 event pairs, 604 based on Foata normal form. 6/4455 useless extension candidates. Maximal degree in co-relation 26775. Up to 2441 conditions per place. [2023-01-28 09:01:33,703 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 240 selfloop transitions, 40 changer transitions 6/286 dead transitions. [2023-01-28 09:01:33,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 286 transitions, 4578 flow [2023-01-28 09:01:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-28 09:01:33,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-28 09:01:33,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-28 09:01:33,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-28 09:01:33,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:33,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-28 09:01:33,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:33,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:33,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:33,712 INFO L175 Difference]: Start difference. First operand has 147 places, 187 transitions, 3009 flow. Second operand 7 states and 1999 transitions. [2023-01-28 09:01:33,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 286 transitions, 4578 flow [2023-01-28 09:01:33,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 286 transitions, 4443 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-01-28 09:01:33,844 INFO L231 Difference]: Finished difference. Result has 147 places, 185 transitions, 2934 flow [2023-01-28 09:01:33,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2934, PETRI_PLACES=147, PETRI_TRANSITIONS=185} [2023-01-28 09:01:33,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-01-28 09:01:33,844 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 185 transitions, 2934 flow [2023-01-28 09:01:33,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:33,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:33,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:33,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 09:01:33,845 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 09:01:33,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 454415150, now seen corresponding path program 6 times [2023-01-28 09:01:33,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:33,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254166212] [2023-01-28 09:01:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:34,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:34,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254166212] [2023-01-28 09:01:34,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254166212] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:34,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:34,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:34,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261716803] [2023-01-28 09:01:34,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:34,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:34,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:34,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:34,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:34,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 185 transitions, 2934 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:34,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:34,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:34,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:35,160 INFO L130 PetriNetUnfolder]: 3872/6304 cut-off events. [2023-01-28 09:01:35,161 INFO L131 PetriNetUnfolder]: For 65432/65432 co-relation queries the response was YES. [2023-01-28 09:01:35,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35964 conditions, 6304 events. 3872/6304 cut-off events. For 65432/65432 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 39152 event pairs, 431 based on Foata normal form. 16/6228 useless extension candidates. Maximal degree in co-relation 35890. Up to 3505 conditions per place. [2023-01-28 09:01:35,204 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 297 selfloop transitions, 52 changer transitions 2/351 dead transitions. [2023-01-28 09:01:35,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 351 transitions, 5855 flow [2023-01-28 09:01:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 09:01:35,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 09:01:35,207 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 09:01:35,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 09:01:35,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:35,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 09:01:35,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:35,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:35,211 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:35,211 INFO L175 Difference]: Start difference. First operand has 147 places, 185 transitions, 2934 flow. Second operand 7 states and 1995 transitions. [2023-01-28 09:01:35,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 351 transitions, 5855 flow [2023-01-28 09:01:35,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 351 transitions, 5697 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-28 09:01:35,438 INFO L231 Difference]: Finished difference. Result has 152 places, 214 transitions, 3601 flow [2023-01-28 09:01:35,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3601, PETRI_PLACES=152, PETRI_TRANSITIONS=214} [2023-01-28 09:01:35,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2023-01-28 09:01:35,439 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 214 transitions, 3601 flow [2023-01-28 09:01:35,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:35,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:35,439 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:35,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 09:01:35,440 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 09:01:35,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:35,440 INFO L85 PathProgramCache]: Analyzing trace with hash 898739619, now seen corresponding path program 6 times [2023-01-28 09:01:35,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:35,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933863664] [2023-01-28 09:01:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:35,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:35,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:35,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933863664] [2023-01-28 09:01:35,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933863664] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:35,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:35,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:35,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355666931] [2023-01-28 09:01:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:35,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:35,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:01:35,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 214 transitions, 3601 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:35,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:35,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:01:35,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:37,232 INFO L130 PetriNetUnfolder]: 4122/6774 cut-off events. [2023-01-28 09:01:37,233 INFO L131 PetriNetUnfolder]: For 82006/82006 co-relation queries the response was YES. [2023-01-28 09:01:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40124 conditions, 6774 events. 4122/6774 cut-off events. For 82006/82006 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 43419 event pairs, 730 based on Foata normal form. 10/6692 useless extension candidates. Maximal degree in co-relation 40045. Up to 3909 conditions per place. [2023-01-28 09:01:37,288 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 268 selfloop transitions, 83 changer transitions 0/351 dead transitions. [2023-01-28 09:01:37,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 351 transitions, 5986 flow [2023-01-28 09:01:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2023-01-28 09:01:37,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639058736335001 [2023-01-28 09:01:37,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2023-01-28 09:01:37,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2023-01-28 09:01:37,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:37,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2023-01-28 09:01:37,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:37,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:37,297 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:37,297 INFO L175 Difference]: Start difference. First operand has 152 places, 214 transitions, 3601 flow. Second operand 7 states and 1964 transitions. [2023-01-28 09:01:37,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 351 transitions, 5986 flow [2023-01-28 09:01:37,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 351 transitions, 5934 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:37,661 INFO L231 Difference]: Finished difference. Result has 161 places, 242 transitions, 4411 flow [2023-01-28 09:01:37,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4411, PETRI_PLACES=161, PETRI_TRANSITIONS=242} [2023-01-28 09:01:37,661 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2023-01-28 09:01:37,661 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 242 transitions, 4411 flow [2023-01-28 09:01:37,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:37,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:37,662 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 09:01:37,662 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 09:01:37,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1280703030, now seen corresponding path program 7 times [2023-01-28 09:01:37,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:37,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373713954] [2023-01-28 09:01:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373713954] [2023-01-28 09:01:38,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373713954] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:38,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:38,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:38,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086599850] [2023-01-28 09:01:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:38,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:38,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:38,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:38,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:38,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:01:38,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 242 transitions, 4411 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:38,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:38,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:01:38,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:39,590 INFO L130 PetriNetUnfolder]: 4524/7452 cut-off events. [2023-01-28 09:01:39,590 INFO L131 PetriNetUnfolder]: For 100360/100360 co-relation queries the response was YES. [2023-01-28 09:01:39,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45761 conditions, 7452 events. 4524/7452 cut-off events. For 100360/100360 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 48824 event pairs, 425 based on Foata normal form. 16/7372 useless extension candidates. Maximal degree in co-relation 45678. Up to 3171 conditions per place. [2023-01-28 09:01:39,650 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 348 selfloop transitions, 129 changer transitions 1/478 dead transitions. [2023-01-28 09:01:39,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 478 transitions, 8384 flow [2023-01-28 09:01:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2526 transitions. [2023-01-28 09:01:39,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640293990488543 [2023-01-28 09:01:39,655 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2526 transitions. [2023-01-28 09:01:39,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2526 transitions. [2023-01-28 09:01:39,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:39,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2526 transitions. [2023-01-28 09:01:39,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.6666666666667) internal successors, (2526), 9 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:39,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:39,661 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:39,661 INFO L175 Difference]: Start difference. First operand has 161 places, 242 transitions, 4411 flow. Second operand 9 states and 2526 transitions. [2023-01-28 09:01:39,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 478 transitions, 8384 flow [2023-01-28 09:01:40,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 478 transitions, 8253 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:40,063 INFO L231 Difference]: Finished difference. Result has 174 places, 311 transitions, 5926 flow [2023-01-28 09:01:40,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5926, PETRI_PLACES=174, PETRI_TRANSITIONS=311} [2023-01-28 09:01:40,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2023-01-28 09:01:40,064 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 311 transitions, 5926 flow [2023-01-28 09:01:40,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:40,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:40,064 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:40,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 09:01:40,065 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 09:01:40,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:40,065 INFO L85 PathProgramCache]: Analyzing trace with hash -669426035, now seen corresponding path program 7 times [2023-01-28 09:01:40,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:40,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963510845] [2023-01-28 09:01:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:40,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:40,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963510845] [2023-01-28 09:01:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963510845] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:40,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:40,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200809250] [2023-01-28 09:01:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:40,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:40,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:40,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:40,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:40,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:40,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 311 transitions, 5926 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:40,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:40,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:40,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:41,928 INFO L130 PetriNetUnfolder]: 4520/7448 cut-off events. [2023-01-28 09:01:41,929 INFO L131 PetriNetUnfolder]: For 114626/114626 co-relation queries the response was YES. [2023-01-28 09:01:41,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49413 conditions, 7448 events. 4520/7448 cut-off events. For 114626/114626 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 48656 event pairs, 842 based on Foata normal form. 4/7356 useless extension candidates. Maximal degree in co-relation 49324. Up to 4512 conditions per place. [2023-01-28 09:01:41,987 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 300 selfloop transitions, 100 changer transitions 5/405 dead transitions. [2023-01-28 09:01:41,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 405 transitions, 7731 flow [2023-01-28 09:01:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1996 transitions. [2023-01-28 09:01:41,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36983509357050215 [2023-01-28 09:01:41,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1996 transitions. [2023-01-28 09:01:41,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1996 transitions. [2023-01-28 09:01:41,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:41,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1996 transitions. [2023-01-28 09:01:41,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:41,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:41,994 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:41,994 INFO L175 Difference]: Start difference. First operand has 174 places, 311 transitions, 5926 flow. Second operand 7 states and 1996 transitions. [2023-01-28 09:01:41,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 405 transitions, 7731 flow [2023-01-28 09:01:42,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 405 transitions, 7661 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-01-28 09:01:42,488 INFO L231 Difference]: Finished difference. Result has 181 places, 312 transitions, 6097 flow [2023-01-28 09:01:42,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6097, PETRI_PLACES=181, PETRI_TRANSITIONS=312} [2023-01-28 09:01:42,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2023-01-28 09:01:42,496 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 312 transitions, 6097 flow [2023-01-28 09:01:42,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:42,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:42,496 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:42,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 09:01:42,496 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 09:01:42,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:42,498 INFO L85 PathProgramCache]: Analyzing trace with hash 502177370, now seen corresponding path program 8 times [2023-01-28 09:01:42,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:42,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413181402] [2023-01-28 09:01:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:42,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:42,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:42,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413181402] [2023-01-28 09:01:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413181402] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:42,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10067286] [2023-01-28 09:01:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:42,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:42,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:42,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:42,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 312 transitions, 6097 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:42,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:42,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:42,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:44,185 INFO L130 PetriNetUnfolder]: 4576/7658 cut-off events. [2023-01-28 09:01:44,186 INFO L131 PetriNetUnfolder]: For 121527/121527 co-relation queries the response was YES. [2023-01-28 09:01:44,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51369 conditions, 7658 events. 4576/7658 cut-off events. For 121527/121527 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 51388 event pairs, 756 based on Foata normal form. 16/7578 useless extension candidates. Maximal degree in co-relation 51278. Up to 3836 conditions per place. [2023-01-28 09:01:44,249 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 86 changer transitions 1/425 dead transitions. [2023-01-28 09:01:44,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 425 transitions, 8217 flow [2023-01-28 09:01:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:01:44,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:01:44,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:01:44,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:01:44,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:44,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:01:44,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:44,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:44,256 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:44,256 INFO L175 Difference]: Start difference. First operand has 181 places, 312 transitions, 6097 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:01:44,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 425 transitions, 8217 flow [2023-01-28 09:01:44,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 425 transitions, 8053 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 09:01:44,872 INFO L231 Difference]: Finished difference. Result has 186 places, 317 transitions, 6275 flow [2023-01-28 09:01:44,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5933, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6275, PETRI_PLACES=186, PETRI_TRANSITIONS=317} [2023-01-28 09:01:44,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-01-28 09:01:44,873 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 317 transitions, 6275 flow [2023-01-28 09:01:44,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:44,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:44,873 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:44,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 09:01:44,873 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 09:01:44,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash 703973021, now seen corresponding path program 8 times [2023-01-28 09:01:44,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:44,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996421173] [2023-01-28 09:01:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:44,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:45,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996421173] [2023-01-28 09:01:45,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996421173] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:45,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:45,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:45,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654284277] [2023-01-28 09:01:45,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:45,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:45,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:45,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:45,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:45,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 317 transitions, 6275 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:45,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:45,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:45,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:46,865 INFO L130 PetriNetUnfolder]: 4628/7834 cut-off events. [2023-01-28 09:01:46,865 INFO L131 PetriNetUnfolder]: For 127980/127980 co-relation queries the response was YES. [2023-01-28 09:01:46,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52757 conditions, 7834 events. 4628/7834 cut-off events. For 127980/127980 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 53588 event pairs, 1040 based on Foata normal form. 4/7742 useless extension candidates. Maximal degree in co-relation 52663. Up to 4710 conditions per place. [2023-01-28 09:01:46,933 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 323 selfloop transitions, 121 changer transitions 4/448 dead transitions. [2023-01-28 09:01:46,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 448 transitions, 8796 flow [2023-01-28 09:01:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-28 09:01:46,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-28 09:01:46,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-28 09:01:46,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-28 09:01:46,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:46,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-28 09:01:46,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:46,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:46,940 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:46,940 INFO L175 Difference]: Start difference. First operand has 186 places, 317 transitions, 6275 flow. Second operand 7 states and 1999 transitions. [2023-01-28 09:01:46,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 448 transitions, 8796 flow [2023-01-28 09:01:47,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 8578 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-01-28 09:01:47,617 INFO L231 Difference]: Finished difference. Result has 193 places, 337 transitions, 6759 flow [2023-01-28 09:01:47,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6091, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6759, PETRI_PLACES=193, PETRI_TRANSITIONS=337} [2023-01-28 09:01:47,618 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2023-01-28 09:01:47,618 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 337 transitions, 6759 flow [2023-01-28 09:01:47,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:47,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:47,618 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:47,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 09:01:47,618 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 09:01:47,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:47,619 INFO L85 PathProgramCache]: Analyzing trace with hash -171246378, now seen corresponding path program 9 times [2023-01-28 09:01:47,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:47,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371196803] [2023-01-28 09:01:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:47,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:47,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:47,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371196803] [2023-01-28 09:01:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371196803] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:47,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713745625] [2023-01-28 09:01:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:47,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:47,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:47,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:47,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:47,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 337 transitions, 6759 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:47,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:47,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:49,590 INFO L130 PetriNetUnfolder]: 4941/8391 cut-off events. [2023-01-28 09:01:49,590 INFO L131 PetriNetUnfolder]: For 140156/140156 co-relation queries the response was YES. [2023-01-28 09:01:49,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56837 conditions, 8391 events. 4941/8391 cut-off events. For 140156/140156 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 58371 event pairs, 982 based on Foata normal form. 8/8303 useless extension candidates. Maximal degree in co-relation 56739. Up to 2647 conditions per place. [2023-01-28 09:01:49,659 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 370 selfloop transitions, 115 changer transitions 0/485 dead transitions. [2023-01-28 09:01:49,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 485 transitions, 9743 flow [2023-01-28 09:01:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 09:01:49,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 09:01:49,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 09:01:49,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 09:01:49,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:49,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 09:01:49,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:49,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:49,666 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:49,666 INFO L175 Difference]: Start difference. First operand has 193 places, 337 transitions, 6759 flow. Second operand 7 states and 2008 transitions. [2023-01-28 09:01:49,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 485 transitions, 9743 flow [2023-01-28 09:01:50,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 485 transitions, 9661 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:50,433 INFO L231 Difference]: Finished difference. Result has 199 places, 350 transitions, 7310 flow [2023-01-28 09:01:50,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7310, PETRI_PLACES=199, PETRI_TRANSITIONS=350} [2023-01-28 09:01:50,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2023-01-28 09:01:50,433 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 350 transitions, 7310 flow [2023-01-28 09:01:50,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:50,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:50,434 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:50,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 09:01:50,434 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 09:01:50,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:50,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1404101974, now seen corresponding path program 10 times [2023-01-28 09:01:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:50,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247383535] [2023-01-28 09:01:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:50,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:50,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247383535] [2023-01-28 09:01:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247383535] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:50,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431728405] [2023-01-28 09:01:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:50,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:01:50,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:01:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:01:50,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:50,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 350 transitions, 7310 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:50,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:50,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:50,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:52,399 INFO L130 PetriNetUnfolder]: 4910/8324 cut-off events. [2023-01-28 09:01:52,400 INFO L131 PetriNetUnfolder]: For 150792/150792 co-relation queries the response was YES. [2023-01-28 09:01:52,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57296 conditions, 8324 events. 4910/8324 cut-off events. For 150792/150792 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 57633 event pairs, 968 based on Foata normal form. 12/8240 useless extension candidates. Maximal degree in co-relation 57196. Up to 4569 conditions per place. [2023-01-28 09:01:52,462 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 122 changer transitions 0/460 dead transitions. [2023-01-28 09:01:52,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 460 transitions, 9542 flow [2023-01-28 09:01:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-28 09:01:52,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-28 09:01:52,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-28 09:01:52,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-28 09:01:52,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:52,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-28 09:01:52,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:52,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:52,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:52,485 INFO L175 Difference]: Start difference. First operand has 199 places, 350 transitions, 7310 flow. Second operand 7 states and 2003 transitions. [2023-01-28 09:01:52,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 460 transitions, 9542 flow [2023-01-28 09:01:53,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 460 transitions, 9240 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-01-28 09:01:53,364 INFO L231 Difference]: Finished difference. Result has 202 places, 350 transitions, 7275 flow [2023-01-28 09:01:53,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7022, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7275, PETRI_PLACES=202, PETRI_TRANSITIONS=350} [2023-01-28 09:01:53,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-01-28 09:01:53,365 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 350 transitions, 7275 flow [2023-01-28 09:01:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:53,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:53,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:53,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 09:01:53,365 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 09:01:53,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash 239437526, now seen corresponding path program 11 times [2023-01-28 09:01:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:53,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299417779] [2023-01-28 09:01:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:53,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:53,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:53,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299417779] [2023-01-28 09:01:53,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299417779] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:53,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:53,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218646911] [2023-01-28 09:01:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:53,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:53,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:53,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 350 transitions, 7275 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:53,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:53,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:53,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:55,570 INFO L130 PetriNetUnfolder]: 4894/8294 cut-off events. [2023-01-28 09:01:55,571 INFO L131 PetriNetUnfolder]: For 146763/146763 co-relation queries the response was YES. [2023-01-28 09:01:55,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57092 conditions, 8294 events. 4894/8294 cut-off events. For 146763/146763 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 57422 event pairs, 968 based on Foata normal form. 6/8204 useless extension candidates. Maximal degree in co-relation 56991. Up to 4569 conditions per place. [2023-01-28 09:01:55,638 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 346 selfloop transitions, 103 changer transitions 6/455 dead transitions. [2023-01-28 09:01:55,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 455 transitions, 9438 flow [2023-01-28 09:01:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 09:01:55,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 09:01:55,651 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 09:01:55,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 09:01:55,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:55,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 09:01:55,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:55,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:55,655 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:55,655 INFO L175 Difference]: Start difference. First operand has 202 places, 350 transitions, 7275 flow. Second operand 7 states and 1997 transitions. [2023-01-28 09:01:55,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 455 transitions, 9438 flow [2023-01-28 09:01:56,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 455 transitions, 9312 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 09:01:56,366 INFO L231 Difference]: Finished difference. Result has 206 places, 349 transitions, 7347 flow [2023-01-28 09:01:56,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7347, PETRI_PLACES=206, PETRI_TRANSITIONS=349} [2023-01-28 09:01:56,368 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-01-28 09:01:56,368 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 349 transitions, 7347 flow [2023-01-28 09:01:56,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:56,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:56,369 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:56,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 09:01:56,369 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 09:01:56,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash -42669151, now seen corresponding path program 9 times [2023-01-28 09:01:56,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:56,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656915118] [2023-01-28 09:01:56,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:56,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:56,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:56,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656915118] [2023-01-28 09:01:56,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656915118] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:56,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:56,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:56,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700257489] [2023-01-28 09:01:56,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:56,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:56,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:56,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:56,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 349 transitions, 7347 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:56,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:56,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:56,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:58,315 INFO L130 PetriNetUnfolder]: 4881/8263 cut-off events. [2023-01-28 09:01:58,315 INFO L131 PetriNetUnfolder]: For 150786/150786 co-relation queries the response was YES. [2023-01-28 09:01:58,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57088 conditions, 8263 events. 4881/8263 cut-off events. For 150786/150786 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 56989 event pairs, 1152 based on Foata normal form. 4/8171 useless extension candidates. Maximal degree in co-relation 56986. Up to 5372 conditions per place. [2023-01-28 09:01:58,381 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 322 selfloop transitions, 115 changer transitions 4/441 dead transitions. [2023-01-28 09:01:58,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 441 transitions, 9271 flow [2023-01-28 09:01:58,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 09:01:58,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 09:01:58,385 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 09:01:58,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 09:01:58,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:58,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 09:01:58,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:58,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:58,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:58,390 INFO L175 Difference]: Start difference. First operand has 206 places, 349 transitions, 7347 flow. Second operand 7 states and 1997 transitions. [2023-01-28 09:01:58,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 441 transitions, 9271 flow [2023-01-28 09:01:59,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 441 transitions, 9053 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-28 09:01:59,083 INFO L231 Difference]: Finished difference. Result has 206 places, 347 transitions, 7309 flow [2023-01-28 09:01:59,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7309, PETRI_PLACES=206, PETRI_TRANSITIONS=347} [2023-01-28 09:01:59,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-01-28 09:01:59,083 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 347 transitions, 7309 flow [2023-01-28 09:01:59,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:59,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:59,084 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:59,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-28 09:01:59,084 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 09:01:59,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash 416811670, now seen corresponding path program 12 times [2023-01-28 09:01:59,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:59,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040109341] [2023-01-28 09:01:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:59,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040109341] [2023-01-28 09:01:59,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040109341] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:59,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:59,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:59,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84866928] [2023-01-28 09:01:59,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:59,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:59,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:59,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:59,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:01:59,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 347 transitions, 7309 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:59,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:59,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:01:59,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:01,006 INFO L130 PetriNetUnfolder]: 4862/8226 cut-off events. [2023-01-28 09:02:01,006 INFO L131 PetriNetUnfolder]: For 155431/155431 co-relation queries the response was YES. [2023-01-28 09:02:01,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56919 conditions, 8226 events. 4862/8226 cut-off events. For 155431/155431 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 56586 event pairs, 1190 based on Foata normal form. 6/8136 useless extension candidates. Maximal degree in co-relation 56817. Up to 5371 conditions per place. [2023-01-28 09:02:01,085 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 302 selfloop transitions, 156 changer transitions 9/467 dead transitions. [2023-01-28 09:02:01,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 467 transitions, 9773 flow [2023-01-28 09:02:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-28 09:02:01,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-28 09:02:01,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-28 09:02:01,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-28 09:02:01,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:01,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-28 09:02:01,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:01,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:01,100 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:01,100 INFO L175 Difference]: Start difference. First operand has 206 places, 347 transitions, 7309 flow. Second operand 7 states and 2005 transitions. [2023-01-28 09:02:01,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 467 transitions, 9773 flow [2023-01-28 09:02:02,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 467 transitions, 9524 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:02,107 INFO L231 Difference]: Finished difference. Result has 212 places, 378 transitions, 8062 flow [2023-01-28 09:02:02,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7116, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8062, PETRI_PLACES=212, PETRI_TRANSITIONS=378} [2023-01-28 09:02:02,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-01-28 09:02:02,108 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 378 transitions, 8062 flow [2023-01-28 09:02:02,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:02,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:02,108 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:02,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-28 09:02:02,109 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 09:02:02,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:02,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1323801734, now seen corresponding path program 13 times [2023-01-28 09:02:02,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:02,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487043314] [2023-01-28 09:02:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:02,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:02,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487043314] [2023-01-28 09:02:02,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487043314] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:02,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5176177] [2023-01-28 09:02:02,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:02,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:02,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:02,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:02,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 378 transitions, 8062 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:02,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:02,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:04,392 INFO L130 PetriNetUnfolder]: 4992/8454 cut-off events. [2023-01-28 09:02:04,392 INFO L131 PetriNetUnfolder]: For 161899/161899 co-relation queries the response was YES. [2023-01-28 09:02:04,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59136 conditions, 8454 events. 4992/8454 cut-off events. For 161899/161899 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 58535 event pairs, 1252 based on Foata normal form. 4/8362 useless extension candidates. Maximal degree in co-relation 59030. Up to 5391 conditions per place. [2023-01-28 09:02:04,463 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 312 selfloop transitions, 168 changer transitions 0/480 dead transitions. [2023-01-28 09:02:04,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 480 transitions, 10297 flow [2023-01-28 09:02:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-28 09:02:04,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-28 09:02:04,467 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-28 09:02:04,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-28 09:02:04,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:04,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-28 09:02:04,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:04,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:04,475 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:04,476 INFO L175 Difference]: Start difference. First operand has 212 places, 378 transitions, 8062 flow. Second operand 7 states and 2012 transitions. [2023-01-28 09:02:04,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 480 transitions, 10297 flow [2023-01-28 09:02:05,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 480 transitions, 10124 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-01-28 09:02:05,292 INFO L231 Difference]: Finished difference. Result has 216 places, 401 transitions, 8888 flow [2023-01-28 09:02:05,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8888, PETRI_PLACES=216, PETRI_TRANSITIONS=401} [2023-01-28 09:02:05,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-01-28 09:02:05,293 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 401 transitions, 8888 flow [2023-01-28 09:02:05,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:05,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:05,294 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:05,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-01-28 09:02:05,294 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 09:02:05,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1390050419, now seen corresponding path program 10 times [2023-01-28 09:02:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:05,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653179593] [2023-01-28 09:02:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:05,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:05,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653179593] [2023-01-28 09:02:05,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653179593] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:05,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:05,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:05,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610564718] [2023-01-28 09:02:05,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:05,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:05,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:05,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:05,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 401 transitions, 8888 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:05,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:05,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:05,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:07,352 INFO L130 PetriNetUnfolder]: 5266/8922 cut-off events. [2023-01-28 09:02:07,352 INFO L131 PetriNetUnfolder]: For 174951/174951 co-relation queries the response was YES. [2023-01-28 09:02:07,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62264 conditions, 8922 events. 5266/8922 cut-off events. For 174951/174951 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 62359 event pairs, 1192 based on Foata normal form. 32/8858 useless extension candidates. Maximal degree in co-relation 62158. Up to 3078 conditions per place. [2023-01-28 09:02:07,448 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 357 selfloop transitions, 170 changer transitions 0/527 dead transitions. [2023-01-28 09:02:07,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 527 transitions, 11557 flow [2023-01-28 09:02:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:07,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2016 transitions. [2023-01-28 09:02:07,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3735408560311284 [2023-01-28 09:02:07,450 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2016 transitions. [2023-01-28 09:02:07,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2016 transitions. [2023-01-28 09:02:07,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:07,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2016 transitions. [2023-01-28 09:02:07,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:07,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:07,455 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:07,455 INFO L175 Difference]: Start difference. First operand has 216 places, 401 transitions, 8888 flow. Second operand 7 states and 2016 transitions. [2023-01-28 09:02:07,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 527 transitions, 11557 flow [2023-01-28 09:02:08,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 527 transitions, 11304 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:08,399 INFO L231 Difference]: Finished difference. Result has 222 places, 417 transitions, 9581 flow [2023-01-28 09:02:08,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9581, PETRI_PLACES=222, PETRI_TRANSITIONS=417} [2023-01-28 09:02:08,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2023-01-28 09:02:08,399 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 417 transitions, 9581 flow [2023-01-28 09:02:08,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:08,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:08,400 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:08,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-01-28 09:02:08,400 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 09:02:08,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash -946825859, now seen corresponding path program 11 times [2023-01-28 09:02:08,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:08,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673016061] [2023-01-28 09:02:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:08,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:08,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673016061] [2023-01-28 09:02:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673016061] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:08,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:08,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:08,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582616908] [2023-01-28 09:02:08,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:08,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:08,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:02:08,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 417 transitions, 9581 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:08,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:08,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:02:08,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:10,570 INFO L130 PetriNetUnfolder]: 5624/9630 cut-off events. [2023-01-28 09:02:10,570 INFO L131 PetriNetUnfolder]: For 198065/198065 co-relation queries the response was YES. [2023-01-28 09:02:10,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67506 conditions, 9630 events. 5624/9630 cut-off events. For 198065/198065 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69377 event pairs, 1112 based on Foata normal form. 8/9542 useless extension candidates. Maximal degree in co-relation 67398. Up to 3378 conditions per place. [2023-01-28 09:02:10,658 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 368 selfloop transitions, 222 changer transitions 0/590 dead transitions. [2023-01-28 09:02:10,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 590 transitions, 13343 flow [2023-01-28 09:02:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1973 transitions. [2023-01-28 09:02:10,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655734667407819 [2023-01-28 09:02:10,660 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1973 transitions. [2023-01-28 09:02:10,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1973 transitions. [2023-01-28 09:02:10,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:10,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1973 transitions. [2023-01-28 09:02:10,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.85714285714283) internal successors, (1973), 7 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:10,664 INFO L175 Difference]: Start difference. First operand has 222 places, 417 transitions, 9581 flow. Second operand 7 states and 1973 transitions. [2023-01-28 09:02:10,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 590 transitions, 13343 flow [2023-01-28 09:02:11,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 590 transitions, 12937 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:11,890 INFO L231 Difference]: Finished difference. Result has 229 places, 456 transitions, 10573 flow [2023-01-28 09:02:11,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=9223, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10573, PETRI_PLACES=229, PETRI_TRANSITIONS=456} [2023-01-28 09:02:11,890 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2023-01-28 09:02:11,890 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 456 transitions, 10573 flow [2023-01-28 09:02:11,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:11,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:11,891 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-28 09:02:11,891 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 09:02:11,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1445794718, now seen corresponding path program 14 times [2023-01-28 09:02:11,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:11,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73487773] [2023-01-28 09:02:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:11,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73487773] [2023-01-28 09:02:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73487773] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:12,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:12,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031058697] [2023-01-28 09:02:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:12,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:12,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:12,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:12,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:12,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 456 transitions, 10573 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:12,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:12,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:12,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:14,443 INFO L130 PetriNetUnfolder]: 5618/9624 cut-off events. [2023-01-28 09:02:14,443 INFO L131 PetriNetUnfolder]: For 210069/210069 co-relation queries the response was YES. [2023-01-28 09:02:14,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69222 conditions, 9624 events. 5618/9624 cut-off events. For 210069/210069 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69241 event pairs, 1416 based on Foata normal form. 6/9536 useless extension candidates. Maximal degree in co-relation 69110. Up to 6511 conditions per place. [2023-01-28 09:02:14,517 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 193 changer transitions 8/534 dead transitions. [2023-01-28 09:02:14,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 534 transitions, 12280 flow [2023-01-28 09:02:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:14,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-28 09:02:14,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-28 09:02:14,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-28 09:02:14,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-28 09:02:14,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:14,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-28 09:02:14,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:14,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:14,523 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:14,523 INFO L175 Difference]: Start difference. First operand has 229 places, 456 transitions, 10573 flow. Second operand 7 states and 2009 transitions. [2023-01-28 09:02:14,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 534 transitions, 12280 flow [2023-01-28 09:02:15,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 534 transitions, 12155 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-28 09:02:15,515 INFO L231 Difference]: Finished difference. Result has 234 places, 454 transitions, 10750 flow [2023-01-28 09:02:15,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10410, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10750, PETRI_PLACES=234, PETRI_TRANSITIONS=454} [2023-01-28 09:02:15,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2023-01-28 09:02:15,516 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 454 transitions, 10750 flow [2023-01-28 09:02:15,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:15,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:15,516 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:15,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-28 09:02:15,516 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 09:02:15,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1382716463, now seen corresponding path program 12 times [2023-01-28 09:02:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:15,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104037168] [2023-01-28 09:02:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:15,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:15,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:15,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104037168] [2023-01-28 09:02:15,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104037168] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:15,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:15,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:15,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576551890] [2023-01-28 09:02:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:15,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:15,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 454 transitions, 10750 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:15,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:15,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:15,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:17,892 INFO L130 PetriNetUnfolder]: 5571/9519 cut-off events. [2023-01-28 09:02:17,896 INFO L131 PetriNetUnfolder]: For 211877/211877 co-relation queries the response was YES. [2023-01-28 09:02:17,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68865 conditions, 9519 events. 5571/9519 cut-off events. For 211877/211877 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 68078 event pairs, 1298 based on Foata normal form. 26/9451 useless extension candidates. Maximal degree in co-relation 68753. Up to 3543 conditions per place. [2023-01-28 09:02:17,977 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 201 changer transitions 0/539 dead transitions. [2023-01-28 09:02:17,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 539 transitions, 12673 flow [2023-01-28 09:02:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2013 transitions. [2023-01-28 09:02:17,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37298499166203447 [2023-01-28 09:02:17,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2013 transitions. [2023-01-28 09:02:17,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2013 transitions. [2023-01-28 09:02:17,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:17,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2013 transitions. [2023-01-28 09:02:17,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.57142857142856) internal successors, (2013), 7 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:17,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:17,984 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:17,984 INFO L175 Difference]: Start difference. First operand has 234 places, 454 transitions, 10750 flow. Second operand 7 states and 2013 transitions. [2023-01-28 09:02:17,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 539 transitions, 12673 flow [2023-01-28 09:02:19,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 539 transitions, 12299 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:19,096 INFO L231 Difference]: Finished difference. Result has 237 places, 455 transitions, 10833 flow [2023-01-28 09:02:19,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10352, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10833, PETRI_PLACES=237, PETRI_TRANSITIONS=455} [2023-01-28 09:02:19,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2023-01-28 09:02:19,098 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 455 transitions, 10833 flow [2023-01-28 09:02:19,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:19,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:19,098 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:19,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-28 09:02:19,098 INFO L420 AbstractCegarLoop]: === Iteration 37 === 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 09:02:19,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1675786311, now seen corresponding path program 13 times [2023-01-28 09:02:19,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:19,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492429109] [2023-01-28 09:02:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:19,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:19,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:19,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492429109] [2023-01-28 09:02:19,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492429109] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:19,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:19,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:19,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132786669] [2023-01-28 09:02:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:19,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:19,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:19,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:19,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 455 transitions, 10833 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:19,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:19,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:19,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:22,228 INFO L130 PetriNetUnfolder]: 5556/9500 cut-off events. [2023-01-28 09:02:22,228 INFO L131 PetriNetUnfolder]: For 211382/211382 co-relation queries the response was YES. [2023-01-28 09:02:22,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68811 conditions, 9500 events. 5556/9500 cut-off events. For 211382/211382 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 68017 event pairs, 1270 based on Foata normal form. 8/9414 useless extension candidates. Maximal degree in co-relation 68699. Up to 3543 conditions per place. [2023-01-28 09:02:22,390 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 399 selfloop transitions, 156 changer transitions 1/556 dead transitions. [2023-01-28 09:02:22,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 556 transitions, 13053 flow [2023-01-28 09:02:22,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-28 09:02:22,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-28 09:02:22,393 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-28 09:02:22,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-28 09:02:22,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:22,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-28 09:02:22,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:22,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:22,398 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:22,399 INFO L175 Difference]: Start difference. First operand has 237 places, 455 transitions, 10833 flow. Second operand 7 states and 2009 transitions. [2023-01-28 09:02:22,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 556 transitions, 13053 flow [2023-01-28 09:02:23,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 556 transitions, 12666 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-01-28 09:02:23,734 INFO L231 Difference]: Finished difference. Result has 241 places, 457 transitions, 10866 flow [2023-01-28 09:02:23,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10448, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10866, PETRI_PLACES=241, PETRI_TRANSITIONS=457} [2023-01-28 09:02:23,735 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2023-01-28 09:02:23,735 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 457 transitions, 10866 flow [2023-01-28 09:02:23,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:23,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:23,735 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:23,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-01-28 09:02:23,735 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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 09:02:23,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:23,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1374750287, now seen corresponding path program 14 times [2023-01-28 09:02:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:23,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310905013] [2023-01-28 09:02:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:23,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:23,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310905013] [2023-01-28 09:02:23,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310905013] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:02:23,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810740716] [2023-01-28 09:02:23,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:02:23,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:02:23,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:02:23,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:02:23,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:02:24,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:02:24,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:02:24,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 09:02:24,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:02:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:24,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:02:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:24,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810740716] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:02:24,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:02:24,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-01-28 09:02:24,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337293672] [2023-01-28 09:02:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:24,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:24,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:24,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:24,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:02:24,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:24,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 457 transitions, 10866 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:24,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:24,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:24,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:27,067 INFO L130 PetriNetUnfolder]: 5574/9514 cut-off events. [2023-01-28 09:02:27,067 INFO L131 PetriNetUnfolder]: For 215303/215303 co-relation queries the response was YES. [2023-01-28 09:02:27,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68931 conditions, 9514 events. 5574/9514 cut-off events. For 215303/215303 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67943 event pairs, 1318 based on Foata normal form. 10/9430 useless extension candidates. Maximal degree in co-relation 68817. Up to 3543 conditions per place. [2023-01-28 09:02:27,160 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 164 changer transitions 0/559 dead transitions. [2023-01-28 09:02:27,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 559 transitions, 13191 flow [2023-01-28 09:02:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 09:02:27,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 09:02:27,165 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 09:02:27,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 09:02:27,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:27,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 09:02:27,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:27,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:27,171 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:27,171 INFO L175 Difference]: Start difference. First operand has 241 places, 457 transitions, 10866 flow. Second operand 7 states and 2008 transitions. [2023-01-28 09:02:27,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 559 transitions, 13191 flow [2023-01-28 09:02:28,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 559 transitions, 12828 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-01-28 09:02:28,492 INFO L231 Difference]: Finished difference. Result has 242 places, 464 transitions, 11091 flow [2023-01-28 09:02:28,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10453, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11091, PETRI_PLACES=242, PETRI_TRANSITIONS=464} [2023-01-28 09:02:28,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2023-01-28 09:02:28,493 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 464 transitions, 11091 flow [2023-01-28 09:02:28,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:28,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:28,493 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:28,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 09:02:28,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-28 09:02:28,700 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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 09:02:28,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:28,701 INFO L85 PathProgramCache]: Analyzing trace with hash -261624810, now seen corresponding path program 15 times [2023-01-28 09:02:28,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:28,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205600530] [2023-01-28 09:02:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:28,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:29,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:29,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205600530] [2023-01-28 09:02:29,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205600530] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:29,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:29,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:29,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528308192] [2023-01-28 09:02:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:29,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:29,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:29,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:02:29,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 464 transitions, 11091 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:29,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:29,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:02:29,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:31,816 INFO L130 PetriNetUnfolder]: 5892/10536 cut-off events. [2023-01-28 09:02:31,817 INFO L131 PetriNetUnfolder]: For 221819/221819 co-relation queries the response was YES. [2023-01-28 09:02:31,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73713 conditions, 10536 events. 5892/10536 cut-off events. For 221819/221819 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 81982 event pairs, 767 based on Foata normal form. 8/10440 useless extension candidates. Maximal degree in co-relation 73599. Up to 5011 conditions per place. [2023-01-28 09:02:31,910 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 320 selfloop transitions, 285 changer transitions 0/605 dead transitions. [2023-01-28 09:02:31,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 605 transitions, 13865 flow [2023-01-28 09:02:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:02:31,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:02:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2806 transitions. [2023-01-28 09:02:31,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394293125810634 [2023-01-28 09:02:31,913 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2806 transitions. [2023-01-28 09:02:31,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2806 transitions. [2023-01-28 09:02:31,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:31,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2806 transitions. [2023-01-28 09:02:31,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 280.6) internal successors, (2806), 10 states have internal predecessors, (2806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:31,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:31,918 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:31,918 INFO L175 Difference]: Start difference. First operand has 242 places, 464 transitions, 11091 flow. Second operand 10 states and 2806 transitions. [2023-01-28 09:02:31,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 605 transitions, 13865 flow [2023-01-28 09:02:33,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 605 transitions, 13525 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-28 09:02:33,225 INFO L231 Difference]: Finished difference. Result has 251 places, 493 transitions, 12066 flow [2023-01-28 09:02:33,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12066, PETRI_PLACES=251, PETRI_TRANSITIONS=493} [2023-01-28 09:02:33,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2023-01-28 09:02:33,226 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 493 transitions, 12066 flow [2023-01-28 09:02:33,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:33,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:33,226 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:33,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-01-28 09:02:33,226 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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 09:02:33,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2058422772, now seen corresponding path program 16 times [2023-01-28 09:02:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868340778] [2023-01-28 09:02:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:33,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:33,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:33,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868340778] [2023-01-28 09:02:33,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868340778] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:33,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:33,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:33,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780916091] [2023-01-28 09:02:33,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:33,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:33,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:33,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 493 transitions, 12066 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:33,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:33,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:33,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:36,050 INFO L130 PetriNetUnfolder]: 5876/10506 cut-off events. [2023-01-28 09:02:36,051 INFO L131 PetriNetUnfolder]: For 237561/237561 co-relation queries the response was YES. [2023-01-28 09:02:36,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77040 conditions, 10506 events. 5876/10506 cut-off events. For 237561/237561 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 81010 event pairs, 1653 based on Foata normal form. 6/10408 useless extension candidates. Maximal degree in co-relation 76922. Up to 7326 conditions per place. [2023-01-28 09:02:36,151 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 210 changer transitions 6/554 dead transitions. [2023-01-28 09:02:36,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 554 transitions, 13639 flow [2023-01-28 09:02:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-28 09:02:36,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-28 09:02:36,168 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-28 09:02:36,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-28 09:02:36,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:36,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-28 09:02:36,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:36,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:36,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:36,172 INFO L175 Difference]: Start difference. First operand has 251 places, 493 transitions, 12066 flow. Second operand 7 states and 2004 transitions. [2023-01-28 09:02:36,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 554 transitions, 13639 flow [2023-01-28 09:02:37,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 554 transitions, 13398 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:37,743 INFO L231 Difference]: Finished difference. Result has 254 places, 491 transitions, 12181 flow [2023-01-28 09:02:37,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12181, PETRI_PLACES=254, PETRI_TRANSITIONS=491} [2023-01-28 09:02:37,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2023-01-28 09:02:37,744 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 491 transitions, 12181 flow [2023-01-28 09:02:37,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:37,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:37,744 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:37,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-01-28 09:02:37,744 INFO L420 AbstractCegarLoop]: === Iteration 41 === 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 09:02:37,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash 473239092, now seen corresponding path program 17 times [2023-01-28 09:02:37,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:37,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815035733] [2023-01-28 09:02:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:37,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:37,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815035733] [2023-01-28 09:02:37,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815035733] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:37,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:37,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:37,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482640992] [2023-01-28 09:02:37,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:37,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:37,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:37,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:37,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:37,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:37,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 491 transitions, 12181 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:37,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:37,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:37,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:40,415 INFO L130 PetriNetUnfolder]: 5881/10523 cut-off events. [2023-01-28 09:02:40,416 INFO L131 PetriNetUnfolder]: For 239781/239781 co-relation queries the response was YES. [2023-01-28 09:02:40,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77296 conditions, 10523 events. 5881/10523 cut-off events. For 239781/239781 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 81313 event pairs, 1567 based on Foata normal form. 12/10431 useless extension candidates. Maximal degree in co-relation 77177. Up to 7326 conditions per place. [2023-01-28 09:02:40,534 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 341 selfloop transitions, 215 changer transitions 1/557 dead transitions. [2023-01-28 09:02:40,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 557 transitions, 13914 flow [2023-01-28 09:02:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 09:02:40,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 09:02:40,536 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 09:02:40,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 09:02:40,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:40,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 09:02:40,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:40,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:40,540 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:40,540 INFO L175 Difference]: Start difference. First operand has 254 places, 491 transitions, 12181 flow. Second operand 7 states and 2001 transitions. [2023-01-28 09:02:40,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 557 transitions, 13914 flow [2023-01-28 09:02:42,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 557 transitions, 13510 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:42,137 INFO L231 Difference]: Finished difference. Result has 258 places, 496 transitions, 12349 flow [2023-01-28 09:02:42,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12349, PETRI_PLACES=258, PETRI_TRANSITIONS=496} [2023-01-28 09:02:42,139 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2023-01-28 09:02:42,139 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 496 transitions, 12349 flow [2023-01-28 09:02:42,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:42,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:42,139 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-01-28 09:02:42,139 INFO L420 AbstractCegarLoop]: === Iteration 42 === 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 09:02:42,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash 941711906, now seen corresponding path program 18 times [2023-01-28 09:02:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:42,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310362712] [2023-01-28 09:02:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:42,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:42,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310362712] [2023-01-28 09:02:42,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310362712] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:42,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:42,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477284916] [2023-01-28 09:02:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:42,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:42,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:42,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:42,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 496 transitions, 12349 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:42,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:42,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:42,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:45,811 INFO L130 PetriNetUnfolder]: 5872/10494 cut-off events. [2023-01-28 09:02:45,811 INFO L131 PetriNetUnfolder]: For 244350/244350 co-relation queries the response was YES. [2023-01-28 09:02:45,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78039 conditions, 10494 events. 5872/10494 cut-off events. For 244350/244350 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 80902 event pairs, 1559 based on Foata normal form. 4/10394 useless extension candidates. Maximal degree in co-relation 77918. Up to 7326 conditions per place. [2023-01-28 09:02:45,902 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 214 changer transitions 0/547 dead transitions. [2023-01-28 09:02:45,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 547 transitions, 13819 flow [2023-01-28 09:02:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 09:02:45,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 09:02:45,904 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 09:02:45,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 09:02:45,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:45,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 09:02:45,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:45,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:45,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:45,908 INFO L175 Difference]: Start difference. First operand has 258 places, 496 transitions, 12349 flow. Second operand 7 states and 1995 transitions. [2023-01-28 09:02:45,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 547 transitions, 13819 flow [2023-01-28 09:02:47,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 547 transitions, 13411 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 09:02:47,329 INFO L231 Difference]: Finished difference. Result has 259 places, 494 transitions, 12308 flow [2023-01-28 09:02:47,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12308, PETRI_PLACES=259, PETRI_TRANSITIONS=494} [2023-01-28 09:02:47,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2023-01-28 09:02:47,330 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 494 transitions, 12308 flow [2023-01-28 09:02:47,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:47,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:47,331 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:47,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-01-28 09:02:47,331 INFO L420 AbstractCegarLoop]: === Iteration 43 === 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 09:02:47,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash 421525821, now seen corresponding path program 15 times [2023-01-28 09:02:47,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:47,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454042127] [2023-01-28 09:02:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:47,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:47,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:47,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454042127] [2023-01-28 09:02:47,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454042127] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:47,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:47,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:02:47,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718444197] [2023-01-28 09:02:47,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:47,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:02:47,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:47,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:02:47,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:02:47,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:02:47,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 494 transitions, 12308 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:47,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:47,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:02:47,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:50,889 INFO L130 PetriNetUnfolder]: 6031/10821 cut-off events. [2023-01-28 09:02:50,890 INFO L131 PetriNetUnfolder]: For 243503/243503 co-relation queries the response was YES. [2023-01-28 09:02:50,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78996 conditions, 10821 events. 6031/10821 cut-off events. For 243503/243503 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 84913 event pairs, 799 based on Foata normal form. 4/10677 useless extension candidates. Maximal degree in co-relation 78876. Up to 5424 conditions per place. [2023-01-28 09:02:51,007 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 432 selfloop transitions, 254 changer transitions 1/687 dead transitions. [2023-01-28 09:02:51,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 687 transitions, 16986 flow [2023-01-28 09:02:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:02:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:02:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2246 transitions. [2023-01-28 09:02:51,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641374837872892 [2023-01-28 09:02:51,009 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2246 transitions. [2023-01-28 09:02:51,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2246 transitions. [2023-01-28 09:02:51,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:51,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2246 transitions. [2023-01-28 09:02:51,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.75) internal successors, (2246), 8 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:51,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:51,014 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:51,014 INFO L175 Difference]: Start difference. First operand has 259 places, 494 transitions, 12308 flow. Second operand 8 states and 2246 transitions. [2023-01-28 09:02:51,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 687 transitions, 16986 flow [2023-01-28 09:02:52,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 687 transitions, 16486 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 09:02:52,945 INFO L231 Difference]: Finished difference. Result has 267 places, 548 transitions, 14028 flow [2023-01-28 09:02:52,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14028, PETRI_PLACES=267, PETRI_TRANSITIONS=548} [2023-01-28 09:02:52,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2023-01-28 09:02:52,946 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 548 transitions, 14028 flow [2023-01-28 09:02:52,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:52,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:52,946 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:52,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-01-28 09:02:52,946 INFO L420 AbstractCegarLoop]: === Iteration 44 === 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 09:02:52,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash -181201292, now seen corresponding path program 19 times [2023-01-28 09:02:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:52,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917004042] [2023-01-28 09:02:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917004042] [2023-01-28 09:02:53,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917004042] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:53,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:53,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:53,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626747968] [2023-01-28 09:02:53,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:53,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:53,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:53,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:53,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 548 transitions, 14028 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:53,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:53,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:53,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:55,925 INFO L130 PetriNetUnfolder]: 6009/10785 cut-off events. [2023-01-28 09:02:55,925 INFO L131 PetriNetUnfolder]: For 263891/263891 co-relation queries the response was YES. [2023-01-28 09:02:56,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81350 conditions, 10785 events. 6009/10785 cut-off events. For 263891/263891 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 83986 event pairs, 1715 based on Foata normal form. 12/10797 useless extension candidates. Maximal degree in co-relation 81225. Up to 7297 conditions per place. [2023-01-28 09:02:56,053 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 365 selfloop transitions, 246 changer transitions 1/612 dead transitions. [2023-01-28 09:02:56,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 612 transitions, 15848 flow [2023-01-28 09:02:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:02:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:02:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:02:56,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:02:56,054 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:02:56,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:02:56,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:56,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:02:56,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:56,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:56,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:56,058 INFO L175 Difference]: Start difference. First operand has 267 places, 548 transitions, 14028 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:02:56,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 612 transitions, 15848 flow [2023-01-28 09:02:57,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 612 transitions, 15778 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-01-28 09:02:57,839 INFO L231 Difference]: Finished difference. Result has 275 places, 550 transitions, 14538 flow [2023-01-28 09:02:57,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=13958, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14538, PETRI_PLACES=275, PETRI_TRANSITIONS=550} [2023-01-28 09:02:57,840 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-01-28 09:02:57,840 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 550 transitions, 14538 flow [2023-01-28 09:02:57,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:57,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:57,840 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:57,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-01-28 09:02:57,841 INFO L420 AbstractCegarLoop]: === Iteration 45 === 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 09:02:57,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:57,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1218142047, now seen corresponding path program 16 times [2023-01-28 09:02:57,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:57,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154120123] [2023-01-28 09:02:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:57,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:58,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:58,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154120123] [2023-01-28 09:02:58,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154120123] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:58,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:58,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:02:58,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166802760] [2023-01-28 09:02:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:58,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:02:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:02:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:02:58,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:02:58,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 550 transitions, 14538 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:02:58,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:58,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:02:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:01,073 INFO L130 PetriNetUnfolder]: 6029/10775 cut-off events. [2023-01-28 09:03:01,073 INFO L131 PetriNetUnfolder]: For 272514/272514 co-relation queries the response was YES. [2023-01-28 09:03:01,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82405 conditions, 10775 events. 6029/10775 cut-off events. For 272514/272514 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 83443 event pairs, 1579 based on Foata normal form. 26/10801 useless extension candidates. Maximal degree in co-relation 82277. Up to 4114 conditions per place. [2023-01-28 09:03:01,216 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 253 changer transitions 0/648 dead transitions. [2023-01-28 09:03:01,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 648 transitions, 17152 flow [2023-01-28 09:03:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-28 09:03:01,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-28 09:03:01,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-28 09:03:01,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-28 09:03:01,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:01,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-28 09:03:01,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:01,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:01,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:01,224 INFO L175 Difference]: Start difference. First operand has 275 places, 550 transitions, 14538 flow. Second operand 7 states and 2012 transitions. [2023-01-28 09:03:01,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 648 transitions, 17152 flow [2023-01-28 09:03:03,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 648 transitions, 16771 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 09:03:03,372 INFO L231 Difference]: Finished difference. Result has 282 places, 570 transitions, 15285 flow [2023-01-28 09:03:03,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14167, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15285, PETRI_PLACES=282, PETRI_TRANSITIONS=570} [2023-01-28 09:03:03,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2023-01-28 09:03:03,373 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 570 transitions, 15285 flow [2023-01-28 09:03:03,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:03,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:03,374 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:03,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-01-28 09:03:03,374 INFO L420 AbstractCegarLoop]: === Iteration 46 === 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 09:03:03,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -225720950, now seen corresponding path program 20 times [2023-01-28 09:03:03,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:03,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256321630] [2023-01-28 09:03:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:03,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:03,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:03,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256321630] [2023-01-28 09:03:03,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256321630] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:03,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:03,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:03,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092133848] [2023-01-28 09:03:03,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:03,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:03,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:03,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:03:03,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 570 transitions, 15285 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:03,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:03,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:03:03,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:07,314 INFO L130 PetriNetUnfolder]: 6035/10789 cut-off events. [2023-01-28 09:03:07,314 INFO L131 PetriNetUnfolder]: For 282152/282152 co-relation queries the response was YES. [2023-01-28 09:03:07,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83220 conditions, 10789 events. 6035/10789 cut-off events. For 282152/282152 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 83644 event pairs, 1701 based on Foata normal form. 16/10805 useless extension candidates. Maximal degree in co-relation 83089. Up to 7292 conditions per place. [2023-01-28 09:03:07,438 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 378 selfloop transitions, 256 changer transitions 0/634 dead transitions. [2023-01-28 09:03:07,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 634 transitions, 17163 flow [2023-01-28 09:03:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 09:03:07,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 09:03:07,440 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 09:03:07,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 09:03:07,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:07,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 09:03:07,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:07,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:07,448 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:07,448 INFO L175 Difference]: Start difference. First operand has 282 places, 570 transitions, 15285 flow. Second operand 7 states and 2008 transitions. [2023-01-28 09:03:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 634 transitions, 17163 flow [2023-01-28 09:03:09,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 634 transitions, 16638 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-28 09:03:09,330 INFO L231 Difference]: Finished difference. Result has 288 places, 579 transitions, 15575 flow [2023-01-28 09:03:09,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15575, PETRI_PLACES=288, PETRI_TRANSITIONS=579} [2023-01-28 09:03:09,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2023-01-28 09:03:09,331 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 579 transitions, 15575 flow [2023-01-28 09:03:09,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:09,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:09,331 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:09,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-01-28 09:03:09,333 INFO L420 AbstractCegarLoop]: === Iteration 47 === 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 09:03:09,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash 747282927, now seen corresponding path program 17 times [2023-01-28 09:03:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:09,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604887848] [2023-01-28 09:03:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:09,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604887848] [2023-01-28 09:03:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604887848] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:09,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:09,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:09,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841165851] [2023-01-28 09:03:09,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:09,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:09,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:09,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:09,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:09,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:03:09,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 579 transitions, 15575 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:09,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:09,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:03:09,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:12,505 INFO L130 PetriNetUnfolder]: 6037/10771 cut-off events. [2023-01-28 09:03:12,506 INFO L131 PetriNetUnfolder]: For 277139/277139 co-relation queries the response was YES. [2023-01-28 09:03:12,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83956 conditions, 10771 events. 6037/10771 cut-off events. For 277139/277139 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 83273 event pairs, 1555 based on Foata normal form. 6/10777 useless extension candidates. Maximal degree in co-relation 83822. Up to 4128 conditions per place. [2023-01-28 09:03:12,624 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 394 selfloop transitions, 260 changer transitions 0/654 dead transitions. [2023-01-28 09:03:12,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 654 transitions, 17630 flow [2023-01-28 09:03:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-28 09:03:12,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-28 09:03:12,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-28 09:03:12,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-28 09:03:12,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:12,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-28 09:03:12,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:12,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:12,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:12,630 INFO L175 Difference]: Start difference. First operand has 288 places, 579 transitions, 15575 flow. Second operand 7 states and 2012 transitions. [2023-01-28 09:03:12,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 654 transitions, 17630 flow [2023-01-28 09:03:14,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 654 transitions, 17142 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-01-28 09:03:14,592 INFO L231 Difference]: Finished difference. Result has 291 places, 583 transitions, 15811 flow [2023-01-28 09:03:14,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15049, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15811, PETRI_PLACES=291, PETRI_TRANSITIONS=583} [2023-01-28 09:03:14,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2023-01-28 09:03:14,593 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 583 transitions, 15811 flow [2023-01-28 09:03:14,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:14,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:14,594 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:14,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-01-28 09:03:14,594 INFO L420 AbstractCegarLoop]: === Iteration 48 === 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 09:03:14,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:14,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1792142250, now seen corresponding path program 21 times [2023-01-28 09:03:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:14,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354801917] [2023-01-28 09:03:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:14,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354801917] [2023-01-28 09:03:14,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354801917] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:14,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:14,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757207983] [2023-01-28 09:03:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:14,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:14,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:03:14,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 583 transitions, 15811 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:14,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:14,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:03:14,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:17,493 INFO L130 PetriNetUnfolder]: 6005/10711 cut-off events. [2023-01-28 09:03:17,493 INFO L131 PetriNetUnfolder]: For 278983/278983 co-relation queries the response was YES. [2023-01-28 09:03:17,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83062 conditions, 10711 events. 6005/10711 cut-off events. For 278983/278983 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 82675 event pairs, 1701 based on Foata normal form. 12/10723 useless extension candidates. Maximal degree in co-relation 82928. Up to 7266 conditions per place. [2023-01-28 09:03:17,613 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 380 selfloop transitions, 256 changer transitions 1/637 dead transitions. [2023-01-28 09:03:17,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 637 transitions, 17425 flow [2023-01-28 09:03:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:03:17,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:03:17,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:03:17,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:03:17,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:17,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:03:17,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:17,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:17,619 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:17,619 INFO L175 Difference]: Start difference. First operand has 291 places, 583 transitions, 15811 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:03:17,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 637 transitions, 17425 flow [2023-01-28 09:03:19,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 637 transitions, 17131 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-28 09:03:19,479 INFO L231 Difference]: Finished difference. Result has 296 places, 581 transitions, 15968 flow [2023-01-28 09:03:19,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15484, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15968, PETRI_PLACES=296, PETRI_TRANSITIONS=581} [2023-01-28 09:03:19,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-01-28 09:03:19,480 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 581 transitions, 15968 flow [2023-01-28 09:03:19,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:19,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:19,480 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:19,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-01-28 09:03:19,480 INFO L420 AbstractCegarLoop]: === Iteration 49 === 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 09:03:19,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:19,481 INFO L85 PathProgramCache]: Analyzing trace with hash 444735361, now seen corresponding path program 18 times [2023-01-28 09:03:19,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:19,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497567955] [2023-01-28 09:03:19,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:19,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:19,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:19,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497567955] [2023-01-28 09:03:19,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497567955] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:19,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:19,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:19,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312026517] [2023-01-28 09:03:19,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:19,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:19,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:19,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:19,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:03:19,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 581 transitions, 15968 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:19,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:19,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:03:19,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:22,638 INFO L130 PetriNetUnfolder]: 5981/10649 cut-off events. [2023-01-28 09:03:22,639 INFO L131 PetriNetUnfolder]: For 277146/277146 co-relation queries the response was YES. [2023-01-28 09:03:22,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82958 conditions, 10649 events. 5981/10649 cut-off events. For 277146/277146 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 81942 event pairs, 1535 based on Foata normal form. 10/10659 useless extension candidates. Maximal degree in co-relation 82823. Up to 4068 conditions per place. [2023-01-28 09:03:22,734 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 391 selfloop transitions, 256 changer transitions 0/647 dead transitions. [2023-01-28 09:03:22,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 647 transitions, 17860 flow [2023-01-28 09:03:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 09:03:22,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 09:03:22,736 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 09:03:22,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 09:03:22,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:22,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 09:03:22,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:22,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:22,740 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:22,740 INFO L175 Difference]: Start difference. First operand has 296 places, 581 transitions, 15968 flow. Second operand 7 states and 2008 transitions. [2023-01-28 09:03:22,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 647 transitions, 17860 flow [2023-01-28 09:03:24,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 647 transitions, 17343 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-28 09:03:24,350 INFO L231 Difference]: Finished difference. Result has 296 places, 584 transitions, 16063 flow [2023-01-28 09:03:24,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15367, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16063, PETRI_PLACES=296, PETRI_TRANSITIONS=584} [2023-01-28 09:03:24,350 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-01-28 09:03:24,350 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 584 transitions, 16063 flow [2023-01-28 09:03:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:24,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:24,351 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:24,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-01-28 09:03:24,351 INFO L420 AbstractCegarLoop]: === Iteration 50 === 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 09:03:24,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:24,351 INFO L85 PathProgramCache]: Analyzing trace with hash 301631524, now seen corresponding path program 22 times [2023-01-28 09:03:24,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87367798] [2023-01-28 09:03:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:24,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:24,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:24,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87367798] [2023-01-28 09:03:24,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87367798] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:24,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:24,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:24,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696514188] [2023-01-28 09:03:24,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:24,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:24,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:24,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:24,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:03:24,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 584 transitions, 16063 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:24,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:24,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:03:24,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:27,687 INFO L130 PetriNetUnfolder]: 6115/10945 cut-off events. [2023-01-28 09:03:27,688 INFO L131 PetriNetUnfolder]: For 283656/283656 co-relation queries the response was YES. [2023-01-28 09:03:27,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84292 conditions, 10945 events. 6115/10945 cut-off events. For 283656/283656 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 85851 event pairs, 885 based on Foata normal form. 8/10953 useless extension candidates. Maximal degree in co-relation 84159. Up to 5029 conditions per place. [2023-01-28 09:03:27,800 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 349 selfloop transitions, 340 changer transitions 0/689 dead transitions. [2023-01-28 09:03:27,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 689 transitions, 18560 flow [2023-01-28 09:03:27,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:03:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:03:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2527 transitions. [2023-01-28 09:03:27,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36417351203343423 [2023-01-28 09:03:27,802 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2527 transitions. [2023-01-28 09:03:27,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2527 transitions. [2023-01-28 09:03:27,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:27,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2527 transitions. [2023-01-28 09:03:27,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.77777777777777) internal successors, (2527), 9 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:27,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:27,807 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:27,807 INFO L175 Difference]: Start difference. First operand has 296 places, 584 transitions, 16063 flow. Second operand 9 states and 2527 transitions. [2023-01-28 09:03:27,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 689 transitions, 18560 flow [2023-01-28 09:03:29,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 689 transitions, 18107 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-01-28 09:03:29,688 INFO L231 Difference]: Finished difference. Result has 299 places, 597 transitions, 16611 flow [2023-01-28 09:03:29,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15581, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16611, PETRI_PLACES=299, PETRI_TRANSITIONS=597} [2023-01-28 09:03:29,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2023-01-28 09:03:29,689 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 597 transitions, 16611 flow [2023-01-28 09:03:29,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:29,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:29,690 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-01-28 09:03:29,690 INFO L420 AbstractCegarLoop]: === Iteration 51 === 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 09:03:29,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1860640349, now seen corresponding path program 19 times [2023-01-28 09:03:29,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392810965] [2023-01-28 09:03:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392810965] [2023-01-28 09:03:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392810965] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:29,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156643823] [2023-01-28 09:03:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:29,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:03:29,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 597 transitions, 16611 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:29,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:29,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:03:29,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:32,842 INFO L130 PetriNetUnfolder]: 6105/10923 cut-off events. [2023-01-28 09:03:32,842 INFO L131 PetriNetUnfolder]: For 289853/289853 co-relation queries the response was YES. [2023-01-28 09:03:32,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86457 conditions, 10923 events. 6105/10923 cut-off events. For 289853/289853 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 84918 event pairs, 1619 based on Foata normal form. 4/10927 useless extension candidates. Maximal degree in co-relation 86324. Up to 4042 conditions per place. [2023-01-28 09:03:32,962 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 255 changer transitions 4/657 dead transitions. [2023-01-28 09:03:32,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 657 transitions, 18416 flow [2023-01-28 09:03:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-28 09:03:32,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-28 09:03:32,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-28 09:03:32,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-28 09:03:32,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:32,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-28 09:03:32,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:32,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:32,968 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:32,968 INFO L175 Difference]: Start difference. First operand has 299 places, 597 transitions, 16611 flow. Second operand 7 states and 2003 transitions. [2023-01-28 09:03:32,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 657 transitions, 18416 flow [2023-01-28 09:03:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 657 transitions, 17823 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:03:34,887 INFO L231 Difference]: Finished difference. Result has 302 places, 596 transitions, 16516 flow [2023-01-28 09:03:34,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16032, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16516, PETRI_PLACES=302, PETRI_TRANSITIONS=596} [2023-01-28 09:03:34,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2023-01-28 09:03:34,888 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 596 transitions, 16516 flow [2023-01-28 09:03:34,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:34,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:34,888 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:34,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-01-28 09:03:34,888 INFO L420 AbstractCegarLoop]: === Iteration 52 === 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 09:03:34,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -769401119, now seen corresponding path program 20 times [2023-01-28 09:03:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:34,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065440180] [2023-01-28 09:03:34,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:34,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065440180] [2023-01-28 09:03:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065440180] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:35,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:35,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355487672] [2023-01-28 09:03:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:35,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:35,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:03:35,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 596 transitions, 16516 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:35,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:35,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:03:35,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:37,972 INFO L130 PetriNetUnfolder]: 6132/10986 cut-off events. [2023-01-28 09:03:37,972 INFO L131 PetriNetUnfolder]: For 289119/289119 co-relation queries the response was YES. [2023-01-28 09:03:38,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85937 conditions, 10986 events. 6132/10986 cut-off events. For 289119/289119 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 85949 event pairs, 1341 based on Foata normal form. 4/10990 useless extension candidates. Maximal degree in co-relation 85819. Up to 6043 conditions per place. [2023-01-28 09:03:38,102 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 415 selfloop transitions, 299 changer transitions 1/715 dead transitions. [2023-01-28 09:03:38,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 715 transitions, 19765 flow [2023-01-28 09:03:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1967 transitions. [2023-01-28 09:03:38,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.364461738002594 [2023-01-28 09:03:38,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1967 transitions. [2023-01-28 09:03:38,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1967 transitions. [2023-01-28 09:03:38,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:38,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1967 transitions. [2023-01-28 09:03:38,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:38,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:38,107 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:38,107 INFO L175 Difference]: Start difference. First operand has 302 places, 596 transitions, 16516 flow. Second operand 7 states and 1967 transitions. [2023-01-28 09:03:38,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 715 transitions, 19765 flow [2023-01-28 09:03:40,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 715 transitions, 19338 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:03:40,222 INFO L231 Difference]: Finished difference. Result has 307 places, 616 transitions, 17596 flow [2023-01-28 09:03:40,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16035, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17596, PETRI_PLACES=307, PETRI_TRANSITIONS=616} [2023-01-28 09:03:40,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2023-01-28 09:03:40,222 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 616 transitions, 17596 flow [2023-01-28 09:03:40,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:40,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:40,223 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:40,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-01-28 09:03:40,223 INFO L420 AbstractCegarLoop]: === Iteration 53 === 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 09:03:40,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:40,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1662687720, now seen corresponding path program 23 times [2023-01-28 09:03:40,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:40,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164801286] [2023-01-28 09:03:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:40,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164801286] [2023-01-28 09:03:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164801286] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097050073] [2023-01-28 09:03:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:40,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:40,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:03:40,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 616 transitions, 17596 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:40,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:40,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:03:40,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:44,376 INFO L130 PetriNetUnfolder]: 6127/10967 cut-off events. [2023-01-28 09:03:44,377 INFO L131 PetriNetUnfolder]: For 316683/316683 co-relation queries the response was YES. [2023-01-28 09:03:44,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87311 conditions, 10967 events. 6127/10967 cut-off events. For 316683/316683 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 85405 event pairs, 1751 based on Foata normal form. 4/10971 useless extension candidates. Maximal degree in co-relation 87190. Up to 7251 conditions per place. [2023-01-28 09:03:44,473 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 261 changer transitions 0/659 dead transitions. [2023-01-28 09:03:44,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 659 transitions, 19245 flow [2023-01-28 09:03:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 09:03:44,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 09:03:44,475 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 09:03:44,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 09:03:44,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:44,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 09:03:44,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:44,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:44,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:44,479 INFO L175 Difference]: Start difference. First operand has 307 places, 616 transitions, 17596 flow. Second operand 7 states and 1995 transitions. [2023-01-28 09:03:44,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 659 transitions, 19245 flow [2023-01-28 09:03:46,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 659 transitions, 18919 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-01-28 09:03:46,021 INFO L231 Difference]: Finished difference. Result has 309 places, 617 transitions, 17798 flow [2023-01-28 09:03:46,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17195, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17798, PETRI_PLACES=309, PETRI_TRANSITIONS=617} [2023-01-28 09:03:46,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2023-01-28 09:03:46,022 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 617 transitions, 17798 flow [2023-01-28 09:03:46,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:46,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:46,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:46,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-01-28 09:03:46,022 INFO L420 AbstractCegarLoop]: === Iteration 54 === 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 09:03:46,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:46,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1151670496, now seen corresponding path program 24 times [2023-01-28 09:03:46,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:46,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427516032] [2023-01-28 09:03:46,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:46,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:46,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427516032] [2023-01-28 09:03:46,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427516032] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:46,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:46,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:46,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783465734] [2023-01-28 09:03:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:46,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:46,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:46,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:03:46,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 617 transitions, 17798 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:46,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:46,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:03:46,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:49,615 INFO L130 PetriNetUnfolder]: 6277/11245 cut-off events. [2023-01-28 09:03:49,615 INFO L131 PetriNetUnfolder]: For 316533/316533 co-relation queries the response was YES. [2023-01-28 09:03:49,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90213 conditions, 11245 events. 6277/11245 cut-off events. For 316533/316533 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 88652 event pairs, 707 based on Foata normal form. 8/11253 useless extension candidates. Maximal degree in co-relation 90093. Up to 3786 conditions per place. [2023-01-28 09:03:49,728 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 412 selfloop transitions, 361 changer transitions 0/773 dead transitions. [2023-01-28 09:03:49,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 773 transitions, 21756 flow [2023-01-28 09:03:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:03:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:03:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2530 transitions. [2023-01-28 09:03:49,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36460585098717396 [2023-01-28 09:03:49,730 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2530 transitions. [2023-01-28 09:03:49,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2530 transitions. [2023-01-28 09:03:49,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:49,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2530 transitions. [2023-01-28 09:03:49,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 281.1111111111111) internal successors, (2530), 9 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:49,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:49,734 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:49,735 INFO L175 Difference]: Start difference. First operand has 309 places, 617 transitions, 17798 flow. Second operand 9 states and 2530 transitions. [2023-01-28 09:03:49,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 773 transitions, 21756 flow [2023-01-28 09:03:51,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 773 transitions, 21047 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-28 09:03:51,667 INFO L231 Difference]: Finished difference. Result has 316 places, 644 transitions, 19098 flow [2023-01-28 09:03:51,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17139, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19098, PETRI_PLACES=316, PETRI_TRANSITIONS=644} [2023-01-28 09:03:51,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2023-01-28 09:03:51,668 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 644 transitions, 19098 flow [2023-01-28 09:03:51,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:51,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:51,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:51,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-01-28 09:03:51,669 INFO L420 AbstractCegarLoop]: === Iteration 55 === 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 09:03:51,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:51,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1672906338, now seen corresponding path program 25 times [2023-01-28 09:03:51,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579432818] [2023-01-28 09:03:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:51,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:51,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579432818] [2023-01-28 09:03:51,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579432818] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:51,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:51,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:51,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090917107] [2023-01-28 09:03:51,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:51,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:51,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:03:51,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 644 transitions, 19098 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:51,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:51,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:03:51,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:55,081 INFO L130 PetriNetUnfolder]: 6689/12023 cut-off events. [2023-01-28 09:03:55,081 INFO L131 PetriNetUnfolder]: For 360624/360624 co-relation queries the response was YES. [2023-01-28 09:03:55,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99466 conditions, 12023 events. 6689/12023 cut-off events. For 360624/360624 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 95742 event pairs, 1381 based on Foata normal form. 8/12031 useless extension candidates. Maximal degree in co-relation 99341. Up to 3366 conditions per place. [2023-01-28 09:03:55,219 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 282 changer transitions 0/789 dead transitions. [2023-01-28 09:03:55,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 789 transitions, 23280 flow [2023-01-28 09:03:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:03:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:03:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:03:55,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:03:55,221 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:03:55,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:03:55,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:55,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:03:55,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:55,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:55,225 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:55,225 INFO L175 Difference]: Start difference. First operand has 316 places, 644 transitions, 19098 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:03:55,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 789 transitions, 23280 flow [2023-01-28 09:03:57,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 789 transitions, 22724 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-01-28 09:03:57,923 INFO L231 Difference]: Finished difference. Result has 320 places, 660 transitions, 19806 flow [2023-01-28 09:03:57,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=18578, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19806, PETRI_PLACES=320, PETRI_TRANSITIONS=660} [2023-01-28 09:03:57,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2023-01-28 09:03:57,924 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 660 transitions, 19806 flow [2023-01-28 09:03:57,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:57,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:57,924 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:57,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-01-28 09:03:57,925 INFO L420 AbstractCegarLoop]: === Iteration 56 === 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 09:03:57,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -547474396, now seen corresponding path program 26 times [2023-01-28 09:03:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454581664] [2023-01-28 09:03:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:58,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454581664] [2023-01-28 09:03:58,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454581664] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:58,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:58,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:03:58,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561346954] [2023-01-28 09:03:58,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:58,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:03:58,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:03:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:03:58,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:03:58,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 660 transitions, 19806 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:03:58,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:58,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:03:58,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:01,962 INFO L130 PetriNetUnfolder]: 6650/11934 cut-off events. [2023-01-28 09:04:01,962 INFO L131 PetriNetUnfolder]: For 368474/368474 co-relation queries the response was YES. [2023-01-28 09:04:02,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98759 conditions, 11934 events. 6650/11934 cut-off events. For 368474/368474 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94669 event pairs, 1577 based on Foata normal form. 10/11944 useless extension candidates. Maximal degree in co-relation 98633. Up to 3857 conditions per place. [2023-01-28 09:04:02,080 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 434 selfloop transitions, 339 changer transitions 0/773 dead transitions. [2023-01-28 09:04:02,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 773 transitions, 23156 flow [2023-01-28 09:04:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:04:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:04:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-28 09:04:02,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-28 09:04:02,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-28 09:04:02,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-28 09:04:02,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:02,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-28 09:04:02,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:02,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:02,085 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:02,085 INFO L175 Difference]: Start difference. First operand has 320 places, 660 transitions, 19806 flow. Second operand 7 states and 2009 transitions. [2023-01-28 09:04:02,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 773 transitions, 23156 flow [2023-01-28 09:04:04,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 773 transitions, 22785 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-28 09:04:04,854 INFO L231 Difference]: Finished difference. Result has 326 places, 673 transitions, 20783 flow [2023-01-28 09:04:04,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=19457, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20783, PETRI_PLACES=326, PETRI_TRANSITIONS=673} [2023-01-28 09:04:04,855 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2023-01-28 09:04:04,855 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 673 transitions, 20783 flow [2023-01-28 09:04:04,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:04,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:04,855 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:04,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-01-28 09:04:04,855 INFO L420 AbstractCegarLoop]: === Iteration 57 === 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 09:04:04,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:04,856 INFO L85 PathProgramCache]: Analyzing trace with hash -238784307, now seen corresponding path program 21 times [2023-01-28 09:04:04,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:04,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906017395] [2023-01-28 09:04:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:04,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:05,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906017395] [2023-01-28 09:04:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906017395] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:05,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:05,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:04:05,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148765445] [2023-01-28 09:04:05,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:05,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:04:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:05,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:04:05,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:04:05,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:04:05,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 673 transitions, 20783 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:05,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:05,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:04:05,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:09,702 INFO L130 PetriNetUnfolder]: 6659/11951 cut-off events. [2023-01-28 09:04:09,703 INFO L131 PetriNetUnfolder]: For 379255/379255 co-relation queries the response was YES. [2023-01-28 09:04:09,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98937 conditions, 11951 events. 6659/11951 cut-off events. For 379255/379255 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94744 event pairs, 1895 based on Foata normal form. 8/11959 useless extension candidates. Maximal degree in co-relation 98809. Up to 7602 conditions per place. [2023-01-28 09:04:09,947 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 436 selfloop transitions, 319 changer transitions 0/755 dead transitions. [2023-01-28 09:04:09,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 755 transitions, 23338 flow [2023-01-28 09:04:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:04:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:04:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-28 09:04:09,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-28 09:04:09,949 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-28 09:04:09,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-28 09:04:09,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:09,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-28 09:04:09,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:09,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:09,953 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:09,953 INFO L175 Difference]: Start difference. First operand has 326 places, 673 transitions, 20783 flow. Second operand 7 states and 2010 transitions. [2023-01-28 09:04:09,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 755 transitions, 23338 flow [2023-01-28 09:04:12,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 755 transitions, 22874 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 09:04:12,288 INFO L231 Difference]: Finished difference. Result has 333 places, 684 transitions, 21530 flow [2023-01-28 09:04:12,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20325, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21530, PETRI_PLACES=333, PETRI_TRANSITIONS=684} [2023-01-28 09:04:12,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2023-01-28 09:04:12,290 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 684 transitions, 21530 flow [2023-01-28 09:04:12,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:12,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:12,291 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:12,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-01-28 09:04:12,291 INFO L420 AbstractCegarLoop]: === Iteration 58 === 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 09:04:12,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash -68082012, now seen corresponding path program 27 times [2023-01-28 09:04:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:12,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522069767] [2023-01-28 09:04:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:12,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:12,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:12,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522069767] [2023-01-28 09:04:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522069767] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:12,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:12,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:04:12,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739983610] [2023-01-28 09:04:12,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:12,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:04:12,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:12,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:04:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:04:12,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:04:12,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 684 transitions, 21530 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:12,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:12,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:04:12,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:17,560 INFO L130 PetriNetUnfolder]: 6677/11991 cut-off events. [2023-01-28 09:04:17,560 INFO L131 PetriNetUnfolder]: For 382643/382643 co-relation queries the response was YES. [2023-01-28 09:04:17,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100572 conditions, 11991 events. 6677/11991 cut-off events. For 382643/382643 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95530 event pairs, 783 based on Foata normal form. 4/11995 useless extension candidates. Maximal degree in co-relation 100440. Up to 4835 conditions per place. [2023-01-28 09:04:17,740 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 483 selfloop transitions, 321 changer transitions 0/804 dead transitions. [2023-01-28 09:04:17,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 804 transitions, 24786 flow [2023-01-28 09:04:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:04:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:04:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2244 transitions. [2023-01-28 09:04:17,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638132295719844 [2023-01-28 09:04:17,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2244 transitions. [2023-01-28 09:04:17,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2244 transitions. [2023-01-28 09:04:17,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:17,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2244 transitions. [2023-01-28 09:04:17,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.5) internal successors, (2244), 8 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:17,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:17,747 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:17,747 INFO L175 Difference]: Start difference. First operand has 333 places, 684 transitions, 21530 flow. Second operand 8 states and 2244 transitions. [2023-01-28 09:04:17,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 804 transitions, 24786 flow [2023-01-28 09:04:20,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 804 transitions, 24250 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-01-28 09:04:20,701 INFO L231 Difference]: Finished difference. Result has 337 places, 702 transitions, 22312 flow [2023-01-28 09:04:20,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20942, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22312, PETRI_PLACES=337, PETRI_TRANSITIONS=702} [2023-01-28 09:04:20,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2023-01-28 09:04:20,703 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 702 transitions, 22312 flow [2023-01-28 09:04:20,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:20,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:20,703 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:20,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-01-28 09:04:20,703 INFO L420 AbstractCegarLoop]: === Iteration 59 === 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 09:04:20,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2017718955, now seen corresponding path program 22 times [2023-01-28 09:04:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:20,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388464158] [2023-01-28 09:04:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:20,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:20,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388464158] [2023-01-28 09:04:20,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388464158] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:20,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:04:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740714520] [2023-01-28 09:04:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:20,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:04:20,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:20,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:04:20,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:04:20,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:04:20,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 702 transitions, 22312 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:20,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:20,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:04:20,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:25,341 INFO L130 PetriNetUnfolder]: 6673/11987 cut-off events. [2023-01-28 09:04:25,341 INFO L131 PetriNetUnfolder]: For 412287/412287 co-relation queries the response was YES. [2023-01-28 09:04:25,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102985 conditions, 11987 events. 6673/11987 cut-off events. For 412287/412287 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95177 event pairs, 1849 based on Foata normal form. 4/11991 useless extension candidates. Maximal degree in co-relation 102854. Up to 7634 conditions per place. [2023-01-28 09:04:25,490 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 443 selfloop transitions, 332 changer transitions 5/780 dead transitions. [2023-01-28 09:04:25,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 780 transitions, 24659 flow [2023-01-28 09:04:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:04:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:04:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 09:04:25,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 09:04:25,492 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 09:04:25,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 09:04:25,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:25,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 09:04:25,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:25,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:25,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:25,509 INFO L175 Difference]: Start difference. First operand has 337 places, 702 transitions, 22312 flow. Second operand 7 states and 2001 transitions. [2023-01-28 09:04:25,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 780 transitions, 24659 flow [2023-01-28 09:04:28,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 780 transitions, 24333 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-28 09:04:28,521 INFO L231 Difference]: Finished difference. Result has 340 places, 699 transitions, 22509 flow [2023-01-28 09:04:28,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21939, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22509, PETRI_PLACES=340, PETRI_TRANSITIONS=699} [2023-01-28 09:04:28,522 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2023-01-28 09:04:28,522 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 699 transitions, 22509 flow [2023-01-28 09:04:28,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:28,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:28,523 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:28,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-01-28 09:04:28,523 INFO L420 AbstractCegarLoop]: === Iteration 60 === 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 09:04:28,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1813531806, now seen corresponding path program 28 times [2023-01-28 09:04:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:28,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987880814] [2023-01-28 09:04:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:28,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:28,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987880814] [2023-01-28 09:04:28,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987880814] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:28,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:04:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595538649] [2023-01-28 09:04:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:28,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:04:28,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:04:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:04:28,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:04:28,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 699 transitions, 22509 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:28,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:28,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:04:28,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:33,907 INFO L130 PetriNetUnfolder]: 6651/11943 cut-off events. [2023-01-28 09:04:33,907 INFO L131 PetriNetUnfolder]: For 414860/414860 co-relation queries the response was YES. [2023-01-28 09:04:34,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102976 conditions, 11943 events. 6651/11943 cut-off events. For 414860/414860 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 94447 event pairs, 1765 based on Foata normal form. 6/11949 useless extension candidates. Maximal degree in co-relation 102845. Up to 3870 conditions per place. [2023-01-28 09:04:34,090 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 273 changer transitions 6/786 dead transitions. [2023-01-28 09:04:34,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 786 transitions, 25087 flow [2023-01-28 09:04:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:04:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:04:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 09:04:34,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 09:04:34,093 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 09:04:34,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 09:04:34,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:34,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 09:04:34,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:34,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:34,098 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:34,099 INFO L175 Difference]: Start difference. First operand has 340 places, 699 transitions, 22509 flow. Second operand 7 states and 2000 transitions. [2023-01-28 09:04:34,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 786 transitions, 25087 flow [2023-01-28 09:04:37,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 786 transitions, 24586 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-01-28 09:04:37,862 INFO L231 Difference]: Finished difference. Result has 342 places, 696 transitions, 22475 flow [2023-01-28 09:04:37,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21957, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22475, PETRI_PLACES=342, PETRI_TRANSITIONS=696} [2023-01-28 09:04:37,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2023-01-28 09:04:37,863 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 696 transitions, 22475 flow [2023-01-28 09:04:37,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:37,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:37,863 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:37,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-01-28 09:04:37,863 INFO L420 AbstractCegarLoop]: === Iteration 61 === 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 09:04:37,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash -708909313, now seen corresponding path program 23 times [2023-01-28 09:04:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:37,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447765282] [2023-01-28 09:04:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:37,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:38,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:38,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447765282] [2023-01-28 09:04:38,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447765282] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:38,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:38,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:04:38,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623957581] [2023-01-28 09:04:38,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:38,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:04:38,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:38,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:04:38,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:04:38,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:04:38,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 696 transitions, 22475 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:38,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:38,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:04:38,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:43,559 INFO L130 PetriNetUnfolder]: 6655/11965 cut-off events. [2023-01-28 09:04:43,559 INFO L131 PetriNetUnfolder]: For 411926/411926 co-relation queries the response was YES. [2023-01-28 09:04:43,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102435 conditions, 11965 events. 6655/11965 cut-off events. For 411926/411926 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95036 event pairs, 1855 based on Foata normal form. 8/11973 useless extension candidates. Maximal degree in co-relation 102305. Up to 7604 conditions per place. [2023-01-28 09:04:43,759 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 438 selfloop transitions, 330 changer transitions 1/769 dead transitions. [2023-01-28 09:04:43,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 769 transitions, 24802 flow [2023-01-28 09:04:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:04:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:04:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-28 09:04:43,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-28 09:04:43,761 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-28 09:04:43,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-28 09:04:43,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:43,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-28 09:04:43,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:43,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:43,767 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:43,767 INFO L175 Difference]: Start difference. First operand has 342 places, 696 transitions, 22475 flow. Second operand 7 states and 1999 transitions. [2023-01-28 09:04:43,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 769 transitions, 24802 flow [2023-01-28 09:04:46,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 769 transitions, 24320 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 09:04:46,711 INFO L231 Difference]: Finished difference. Result has 346 places, 698 transitions, 22713 flow [2023-01-28 09:04:46,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21953, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22713, PETRI_PLACES=346, PETRI_TRANSITIONS=698} [2023-01-28 09:04:46,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2023-01-28 09:04:46,712 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 698 transitions, 22713 flow [2023-01-28 09:04:46,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:46,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:46,713 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:46,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-01-28 09:04:46,713 INFO L420 AbstractCegarLoop]: === Iteration 62 === 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 09:04:46,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:46,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1494227853, now seen corresponding path program 24 times [2023-01-28 09:04:46,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:46,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682224425] [2023-01-28 09:04:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:46,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:47,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:47,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682224425] [2023-01-28 09:04:47,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682224425] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:47,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:47,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:04:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468033322] [2023-01-28 09:04:47,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:47,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:04:47,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:04:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:04:47,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:04:47,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 698 transitions, 22713 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:47,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:47,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:04:47,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:51,312 INFO L130 PetriNetUnfolder]: 6649/11935 cut-off events. [2023-01-28 09:04:51,313 INFO L131 PetriNetUnfolder]: For 417781/417781 co-relation queries the response was YES. [2023-01-28 09:04:51,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102947 conditions, 11935 events. 6649/11935 cut-off events. For 417781/417781 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 94577 event pairs, 1839 based on Foata normal form. 4/11939 useless extension candidates. Maximal degree in co-relation 102815. Up to 7604 conditions per place. [2023-01-28 09:04:51,431 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 430 selfloop transitions, 330 changer transitions 0/760 dead transitions. [2023-01-28 09:04:51,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 760 transitions, 24882 flow [2023-01-28 09:04:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:04:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:04:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1993 transitions. [2023-01-28 09:04:51,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692792292014082 [2023-01-28 09:04:51,442 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1993 transitions. [2023-01-28 09:04:51,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1993 transitions. [2023-01-28 09:04:51,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:51,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1993 transitions. [2023-01-28 09:04:51,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.7142857142857) internal successors, (1993), 7 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:51,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:51,445 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:51,445 INFO L175 Difference]: Start difference. First operand has 346 places, 698 transitions, 22713 flow. Second operand 7 states and 1993 transitions. [2023-01-28 09:04:51,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 760 transitions, 24882 flow [2023-01-28 09:04:53,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 760 transitions, 24271 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-28 09:04:53,839 INFO L231 Difference]: Finished difference. Result has 347 places, 697 transitions, 22730 flow [2023-01-28 09:04:53,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22070, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22730, PETRI_PLACES=347, PETRI_TRANSITIONS=697} [2023-01-28 09:04:53,839 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2023-01-28 09:04:53,840 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 697 transitions, 22730 flow [2023-01-28 09:04:53,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:53,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:53,840 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:53,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-01-28 09:04:53,840 INFO L420 AbstractCegarLoop]: === Iteration 63 === 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 09:04:53,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -790790675, now seen corresponding path program 25 times [2023-01-28 09:04:53,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:53,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109820491] [2023-01-28 09:04:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:53,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:54,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109820491] [2023-01-28 09:04:54,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109820491] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:54,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:54,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:04:54,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251599169] [2023-01-28 09:04:54,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:04:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:04:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:04:54,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:04:54,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 697 transitions, 22730 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:54,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:54,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:04:54,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:57,703 INFO L130 PetriNetUnfolder]: 6629/11891 cut-off events. [2023-01-28 09:04:57,703 INFO L131 PetriNetUnfolder]: For 417919/417919 co-relation queries the response was YES. [2023-01-28 09:04:57,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102778 conditions, 11891 events. 6629/11891 cut-off events. For 417919/417919 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 94062 event pairs, 1927 based on Foata normal form. 8/11899 useless extension candidates. Maximal degree in co-relation 102647. Up to 7604 conditions per place. [2023-01-28 09:04:57,827 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 441 selfloop transitions, 330 changer transitions 1/772 dead transitions. [2023-01-28 09:04:57,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 772 transitions, 24973 flow [2023-01-28 09:04:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:04:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:04:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-28 09:04:57,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-28 09:04:57,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-28 09:04:57,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-28 09:04:57,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:57,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-28 09:04:57,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:57,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:57,832 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:04:57,832 INFO L175 Difference]: Start difference. First operand has 347 places, 697 transitions, 22730 flow. Second operand 7 states and 2005 transitions. [2023-01-28 09:04:57,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 772 transitions, 24973 flow [2023-01-28 09:05:00,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 772 transitions, 24309 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 09:05:00,513 INFO L231 Difference]: Finished difference. Result has 350 places, 697 transitions, 22712 flow [2023-01-28 09:05:00,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22023, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22712, PETRI_PLACES=350, PETRI_TRANSITIONS=697} [2023-01-28 09:05:00,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2023-01-28 09:05:00,514 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 697 transitions, 22712 flow [2023-01-28 09:05:00,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:00,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:00,514 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:00,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-01-28 09:05:00,514 INFO L420 AbstractCegarLoop]: === Iteration 64 === 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 09:05:00,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2052057265, now seen corresponding path program 26 times [2023-01-28 09:05:00,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:00,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542357762] [2023-01-28 09:05:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:00,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:00,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542357762] [2023-01-28 09:05:00,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542357762] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:05:00,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:05:00,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:05:00,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052390173] [2023-01-28 09:05:00,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:00,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:05:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:00,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:05:00,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:05:00,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:05:00,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 697 transitions, 22712 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:00,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:00,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:05:00,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:05,032 INFO L130 PetriNetUnfolder]: 7334/13402 cut-off events. [2023-01-28 09:05:05,032 INFO L131 PetriNetUnfolder]: For 442791/442791 co-relation queries the response was YES. [2023-01-28 09:05:05,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112278 conditions, 13402 events. 7334/13402 cut-off events. For 442791/442791 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 111626 event pairs, 1079 based on Foata normal form. 10/13412 useless extension candidates. Maximal degree in co-relation 112145. Up to 5787 conditions per place. [2023-01-28 09:05:05,179 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 427 selfloop transitions, 473 changer transitions 1/901 dead transitions. [2023-01-28 09:05:05,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 901 transitions, 28292 flow [2023-01-28 09:05:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:05:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:05:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2800 transitions. [2023-01-28 09:05:05,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631647211413748 [2023-01-28 09:05:05,182 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2800 transitions. [2023-01-28 09:05:05,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2800 transitions. [2023-01-28 09:05:05,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:05,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2800 transitions. [2023-01-28 09:05:05,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:05,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:05,187 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:05,187 INFO L175 Difference]: Start difference. First operand has 350 places, 697 transitions, 22712 flow. Second operand 10 states and 2800 transitions. [2023-01-28 09:05:05,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 901 transitions, 28292 flow [2023-01-28 09:05:08,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 901 transitions, 27577 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 09:05:08,171 INFO L231 Difference]: Finished difference. Result has 356 places, 771 transitions, 25341 flow [2023-01-28 09:05:08,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22065, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25341, PETRI_PLACES=356, PETRI_TRANSITIONS=771} [2023-01-28 09:05:08,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-01-28 09:05:08,173 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 771 transitions, 25341 flow [2023-01-28 09:05:08,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:08,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:08,173 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:08,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-01-28 09:05:08,173 INFO L420 AbstractCegarLoop]: === Iteration 65 === 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 09:05:08,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash -630506158, now seen corresponding path program 29 times [2023-01-28 09:05:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:08,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119462646] [2023-01-28 09:05:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:08,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119462646] [2023-01-28 09:05:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119462646] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:05:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045764629] [2023-01-28 09:05:08,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:05:08,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:05:08,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:05:08,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:05:08,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:05:08,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 09:05:08,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:05:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 09:05:08,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:05:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:08,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:05:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:09,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045764629] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:05:09,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:05:09,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 18 [2023-01-28 09:05:09,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441704317] [2023-01-28 09:05:09,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:09,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:05:09,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:05:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:05:09,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 771 [2023-01-28 09:05:09,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 771 transitions, 25341 flow. Second operand has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:09,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:09,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 771 [2023-01-28 09:05:09,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:13,679 INFO L130 PetriNetUnfolder]: 7376/13474 cut-off events. [2023-01-28 09:05:13,679 INFO L131 PetriNetUnfolder]: For 475315/475315 co-relation queries the response was YES. [2023-01-28 09:05:13,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117623 conditions, 13474 events. 7376/13474 cut-off events. For 475315/475315 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 111222 event pairs, 2077 based on Foata normal form. 6/13480 useless extension candidates. Maximal degree in co-relation 117489. Up to 5815 conditions per place. [2023-01-28 09:05:14,017 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 516 selfloop transitions, 334 changer transitions 14/864 dead transitions. [2023-01-28 09:05:14,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 864 transitions, 28302 flow [2023-01-28 09:05:14,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:05:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:05:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2251 transitions. [2023-01-28 09:05:14,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3649481193255512 [2023-01-28 09:05:14,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2251 transitions. [2023-01-28 09:05:14,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2251 transitions. [2023-01-28 09:05:14,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:14,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2251 transitions. [2023-01-28 09:05:14,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.375) internal successors, (2251), 8 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:14,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:14,023 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:14,023 INFO L175 Difference]: Start difference. First operand has 356 places, 771 transitions, 25341 flow. Second operand 8 states and 2251 transitions. [2023-01-28 09:05:14,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 864 transitions, 28302 flow [2023-01-28 09:05:17,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 864 transitions, 27636 flow, removed 70 selfloop flow, removed 3 redundant places. [2023-01-28 09:05:17,559 INFO L231 Difference]: Finished difference. Result has 363 places, 776 transitions, 25619 flow [2023-01-28 09:05:17,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=24681, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25619, PETRI_PLACES=363, PETRI_TRANSITIONS=776} [2023-01-28 09:05:17,559 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2023-01-28 09:05:17,559 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 776 transitions, 25619 flow [2023-01-28 09:05:17,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:17,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:17,560 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:17,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 09:05:17,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:05:17,764 INFO L420 AbstractCegarLoop]: === Iteration 66 === 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 09:05:17,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:17,765 INFO L85 PathProgramCache]: Analyzing trace with hash 246931528, now seen corresponding path program 30 times [2023-01-28 09:05:17,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:17,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655424921] [2023-01-28 09:05:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:17,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:17,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655424921] [2023-01-28 09:05:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655424921] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:05:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321717289] [2023-01-28 09:05:17,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:05:17,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:05:17,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:05:17,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:05:18,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:05:18,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 09:05:18,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:05:18,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 09:05:18,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:05:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:18,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:05:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:18,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321717289] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:05:18,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:05:18,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 09:05:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113635419] [2023-01-28 09:05:18,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:05:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 09:05:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 09:05:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-01-28 09:05:18,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:05:18,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 776 transitions, 25619 flow. Second operand has 17 states, 17 states have (on average 276.3529411764706) internal successors, (4698), 17 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:18,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:18,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:05:18,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:23,933 INFO L130 PetriNetUnfolder]: 7225/13181 cut-off events. [2023-01-28 09:05:23,933 INFO L131 PetriNetUnfolder]: For 460323/460323 co-relation queries the response was YES. [2023-01-28 09:05:24,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114472 conditions, 13181 events. 7225/13181 cut-off events. For 460323/460323 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 108291 event pairs, 1877 based on Foata normal form. 20/13201 useless extension candidates. Maximal degree in co-relation 114335. Up to 4389 conditions per place. [2023-01-28 09:05:24,063 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 450 selfloop transitions, 396 changer transitions 0/846 dead transitions. [2023-01-28 09:05:24,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 846 transitions, 28058 flow [2023-01-28 09:05:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:05:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:05:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-28 09:05:24,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-28 09:05:24,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-28 09:05:24,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-28 09:05:24,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:24,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-28 09:05:24,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:24,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:24,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:24,069 INFO L175 Difference]: Start difference. First operand has 363 places, 776 transitions, 25619 flow. Second operand 7 states and 2005 transitions. [2023-01-28 09:05:24,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 846 transitions, 28058 flow [2023-01-28 09:05:27,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 846 transitions, 27672 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-01-28 09:05:27,415 INFO L231 Difference]: Finished difference. Result has 366 places, 773 transitions, 25989 flow [2023-01-28 09:05:27,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25074, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25989, PETRI_PLACES=366, PETRI_TRANSITIONS=773} [2023-01-28 09:05:27,415 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2023-01-28 09:05:27,415 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 773 transitions, 25989 flow [2023-01-28 09:05:27,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 276.3529411764706) internal successors, (4698), 17 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:27,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:27,416 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:27,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 09:05:27,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:05:27,621 INFO L420 AbstractCegarLoop]: === Iteration 67 === 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 09:05:27,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2146257214, now seen corresponding path program 31 times [2023-01-28 09:05:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381166081] [2023-01-28 09:05:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:27,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:27,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381166081] [2023-01-28 09:05:27,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381166081] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:05:27,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:05:27,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:05:27,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066282497] [2023-01-28 09:05:27,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:27,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:05:27,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:27,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:05:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:05:27,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:05:27,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 773 transitions, 25989 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:27,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:27,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:05:27,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:33,281 INFO L130 PetriNetUnfolder]: 7209/13151 cut-off events. [2023-01-28 09:05:33,281 INFO L131 PetriNetUnfolder]: For 470322/470322 co-relation queries the response was YES. [2023-01-28 09:05:33,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114854 conditions, 13151 events. 7209/13151 cut-off events. For 470322/470322 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 107856 event pairs, 2065 based on Foata normal form. 6/13157 useless extension candidates. Maximal degree in co-relation 114717. Up to 5815 conditions per place. [2023-01-28 09:05:33,426 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 504 selfloop transitions, 329 changer transitions 6/839 dead transitions. [2023-01-28 09:05:33,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 839 transitions, 28358 flow [2023-01-28 09:05:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:05:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:05:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 09:05:33,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 09:05:33,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 09:05:33,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 09:05:33,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:33,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 09:05:33,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:33,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:33,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:33,432 INFO L175 Difference]: Start difference. First operand has 366 places, 773 transitions, 25989 flow. Second operand 7 states and 2001 transitions. [2023-01-28 09:05:33,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 839 transitions, 28358 flow [2023-01-28 09:05:36,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 839 transitions, 27623 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 09:05:36,548 INFO L231 Difference]: Finished difference. Result has 369 places, 772 transitions, 25876 flow [2023-01-28 09:05:36,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25254, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25876, PETRI_PLACES=369, PETRI_TRANSITIONS=772} [2023-01-28 09:05:36,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2023-01-28 09:05:36,549 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 772 transitions, 25876 flow [2023-01-28 09:05:36,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:36,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:36,550 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:36,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-01-28 09:05:36,550 INFO L420 AbstractCegarLoop]: === Iteration 68 === 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 09:05:36,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1309243911, now seen corresponding path program 27 times [2023-01-28 09:05:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:36,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525190676] [2023-01-28 09:05:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:36,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525190676] [2023-01-28 09:05:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525190676] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:05:36,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:05:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:05:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780123483] [2023-01-28 09:05:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:36,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:05:36,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:36,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:05:36,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:05:36,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:05:36,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 772 transitions, 25876 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:36,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:36,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:05:36,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:41,165 INFO L130 PetriNetUnfolder]: 7193/13097 cut-off events. [2023-01-28 09:05:41,165 INFO L131 PetriNetUnfolder]: For 466219/466219 co-relation queries the response was YES. [2023-01-28 09:05:41,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114176 conditions, 13097 events. 7193/13097 cut-off events. For 466219/466219 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 107250 event pairs, 2179 based on Foata normal form. 4/13101 useless extension candidates. Maximal degree in co-relation 114038. Up to 8557 conditions per place. [2023-01-28 09:05:41,299 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 464 selfloop transitions, 365 changer transitions 0/829 dead transitions. [2023-01-28 09:05:41,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 829 transitions, 27907 flow [2023-01-28 09:05:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:05:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:05:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 09:05:41,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 09:05:41,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 09:05:41,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 09:05:41,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:41,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 09:05:41,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:41,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:41,305 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:41,305 INFO L175 Difference]: Start difference. First operand has 369 places, 772 transitions, 25876 flow. Second operand 7 states and 2008 transitions. [2023-01-28 09:05:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 829 transitions, 27907 flow [2023-01-28 09:05:44,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 829 transitions, 27322 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-28 09:05:44,314 INFO L231 Difference]: Finished difference. Result has 367 places, 772 transitions, 25996 flow [2023-01-28 09:05:44,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25219, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25996, PETRI_PLACES=367, PETRI_TRANSITIONS=772} [2023-01-28 09:05:44,315 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2023-01-28 09:05:44,315 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 772 transitions, 25996 flow [2023-01-28 09:05:44,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:44,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:44,315 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-01-28 09:05:44,315 INFO L420 AbstractCegarLoop]: === Iteration 69 === 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 09:05:44,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 772055314, now seen corresponding path program 32 times [2023-01-28 09:05:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:44,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103902553] [2023-01-28 09:05:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:44,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:44,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103902553] [2023-01-28 09:05:44,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103902553] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:05:44,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:05:44,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:05:44,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285969198] [2023-01-28 09:05:44,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:44,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:05:44,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:05:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:05:44,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:05:44,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 772 transitions, 25996 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:44,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:44,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:05:44,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:48,690 INFO L130 PetriNetUnfolder]: 7161/13037 cut-off events. [2023-01-28 09:05:48,690 INFO L131 PetriNetUnfolder]: For 472379/472379 co-relation queries the response was YES. [2023-01-28 09:05:48,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114256 conditions, 13037 events. 7161/13037 cut-off events. For 472379/472379 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 106485 event pairs, 2051 based on Foata normal form. 12/13049 useless extension candidates. Maximal degree in co-relation 114122. Up to 5768 conditions per place. [2023-01-28 09:05:49,042 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 505 selfloop transitions, 329 changer transitions 1/835 dead transitions. [2023-01-28 09:05:49,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 835 transitions, 28321 flow [2023-01-28 09:05:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:05:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:05:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 09:05:49,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 09:05:49,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 09:05:49,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 09:05:49,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:49,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 09:05:49,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:49,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:49,048 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:49,048 INFO L175 Difference]: Start difference. First operand has 367 places, 772 transitions, 25996 flow. Second operand 7 states and 2000 transitions. [2023-01-28 09:05:49,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 835 transitions, 28321 flow [2023-01-28 09:05:52,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 835 transitions, 27802 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:05:52,191 INFO L231 Difference]: Finished difference. Result has 372 places, 770 transitions, 26072 flow [2023-01-28 09:05:52,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25442, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26072, PETRI_PLACES=372, PETRI_TRANSITIONS=770} [2023-01-28 09:05:52,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-01-28 09:05:52,192 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 770 transitions, 26072 flow [2023-01-28 09:05:52,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:52,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:52,192 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:52,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-01-28 09:05:52,193 INFO L420 AbstractCegarLoop]: === Iteration 70 === 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 09:05:52,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash 129870617, now seen corresponding path program 28 times [2023-01-28 09:05:52,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:52,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200610752] [2023-01-28 09:05:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:52,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:52,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:52,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200610752] [2023-01-28 09:05:52,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200610752] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:05:52,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:05:52,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:05:52,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886034516] [2023-01-28 09:05:52,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:52,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:05:52,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:52,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:05:52,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:05:52,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:05:52,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 770 transitions, 26072 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:52,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:52,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:05:52,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:56,700 INFO L130 PetriNetUnfolder]: 7148/13006 cut-off events. [2023-01-28 09:05:56,701 INFO L131 PetriNetUnfolder]: For 476231/476231 co-relation queries the response was YES. [2023-01-28 09:05:56,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113886 conditions, 13006 events. 7148/13006 cut-off events. For 476231/476231 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 106206 event pairs, 2163 based on Foata normal form. 4/13010 useless extension candidates. Maximal degree in co-relation 113751. Up to 8497 conditions per place. [2023-01-28 09:05:56,852 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 457 selfloop transitions, 360 changer transitions 4/821 dead transitions. [2023-01-28 09:05:56,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 821 transitions, 28087 flow [2023-01-28 09:05:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:05:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:05:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 09:05:56,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 09:05:56,855 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 09:05:56,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 09:05:56,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:56,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 09:05:56,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:56,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:56,859 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:05:56,859 INFO L175 Difference]: Start difference. First operand has 372 places, 770 transitions, 26072 flow. Second operand 7 states and 2001 transitions. [2023-01-28 09:05:56,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 821 transitions, 28087 flow [2023-01-28 09:06:00,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 821 transitions, 27694 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 09:06:00,339 INFO L231 Difference]: Finished difference. Result has 376 places, 769 transitions, 26368 flow [2023-01-28 09:06:00,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25679, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26368, PETRI_PLACES=376, PETRI_TRANSITIONS=769} [2023-01-28 09:06:00,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2023-01-28 09:06:00,339 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 769 transitions, 26368 flow [2023-01-28 09:06:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:00,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:00,340 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:00,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-01-28 09:06:00,340 INFO L420 AbstractCegarLoop]: === Iteration 71 === 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 09:06:00,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1956490682, now seen corresponding path program 33 times [2023-01-28 09:06:00,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:00,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329175954] [2023-01-28 09:06:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:00,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:00,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329175954] [2023-01-28 09:06:00,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329175954] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:00,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:00,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:06:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841685388] [2023-01-28 09:06:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:06:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:06:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:06:00,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:06:00,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 769 transitions, 26368 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:00,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:00,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:06:00,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:05,055 INFO L130 PetriNetUnfolder]: 7135/12975 cut-off events. [2023-01-28 09:06:05,055 INFO L131 PetriNetUnfolder]: For 485554/485554 co-relation queries the response was YES. [2023-01-28 09:06:05,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114241 conditions, 12975 events. 7135/12975 cut-off events. For 485554/485554 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 105636 event pairs, 2033 based on Foata normal form. 8/12983 useless extension candidates. Maximal degree in co-relation 114106. Up to 5746 conditions per place. [2023-01-28 09:06:05,196 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 498 selfloop transitions, 333 changer transitions 0/831 dead transitions. [2023-01-28 09:06:05,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 831 transitions, 28810 flow [2023-01-28 09:06:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:06:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:06:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 09:06:05,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 09:06:05,198 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 09:06:05,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 09:06:05,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:05,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 09:06:05,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:05,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:05,202 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:05,202 INFO L175 Difference]: Start difference. First operand has 376 places, 769 transitions, 26368 flow. Second operand 7 states and 1997 transitions. [2023-01-28 09:06:05,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 831 transitions, 28810 flow [2023-01-28 09:06:08,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 831 transitions, 28070 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-01-28 09:06:08,554 INFO L231 Difference]: Finished difference. Result has 372 places, 771 transitions, 26419 flow [2023-01-28 09:06:08,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25540, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26419, PETRI_PLACES=372, PETRI_TRANSITIONS=771} [2023-01-28 09:06:08,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-01-28 09:06:08,555 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 771 transitions, 26419 flow [2023-01-28 09:06:08,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:08,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:08,556 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:08,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-01-28 09:06:08,556 INFO L420 AbstractCegarLoop]: === Iteration 72 === 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 09:06:08,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1288660147, now seen corresponding path program 29 times [2023-01-28 09:06:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:08,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404865441] [2023-01-28 09:06:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:08,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:08,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404865441] [2023-01-28 09:06:08,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404865441] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:08,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:08,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:06:08,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198892996] [2023-01-28 09:06:08,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:08,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:06:08,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:06:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:06:08,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:06:08,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 771 transitions, 26419 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:08,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:08,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:06:08,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:13,021 INFO L130 PetriNetUnfolder]: 7092/12888 cut-off events. [2023-01-28 09:06:13,021 INFO L131 PetriNetUnfolder]: For 482954/482954 co-relation queries the response was YES. [2023-01-28 09:06:13,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113246 conditions, 12888 events. 7092/12888 cut-off events. For 482954/482954 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 104889 event pairs, 2167 based on Foata normal form. 26/12914 useless extension candidates. Maximal degree in co-relation 113114. Up to 8471 conditions per place. [2023-01-28 09:06:13,151 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 455 selfloop transitions, 367 changer transitions 0/822 dead transitions. [2023-01-28 09:06:13,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 822 transitions, 28451 flow [2023-01-28 09:06:13,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:06:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:06:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:06:13,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:06:13,152 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:06:13,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:06:13,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:13,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:06:13,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:13,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:13,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:13,156 INFO L175 Difference]: Start difference. First operand has 372 places, 771 transitions, 26419 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:06:13,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 822 transitions, 28451 flow [2023-01-28 09:06:16,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 822 transitions, 27787 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-28 09:06:16,241 INFO L231 Difference]: Finished difference. Result has 374 places, 772 transitions, 26523 flow [2023-01-28 09:06:16,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25735, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26523, PETRI_PLACES=374, PETRI_TRANSITIONS=772} [2023-01-28 09:06:16,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2023-01-28 09:06:16,241 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 772 transitions, 26523 flow [2023-01-28 09:06:16,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:16,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:16,242 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-01-28 09:06:16,242 INFO L420 AbstractCegarLoop]: === Iteration 73 === 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 09:06:16,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:16,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1855671599, now seen corresponding path program 30 times [2023-01-28 09:06:16,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:16,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455540782] [2023-01-28 09:06:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:16,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:16,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455540782] [2023-01-28 09:06:16,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455540782] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:16,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:16,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:06:16,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407778526] [2023-01-28 09:06:16,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:16,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:06:16,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:16,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:06:16,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:06:16,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:06:16,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 772 transitions, 26523 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:16,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:16,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:06:16,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:20,628 INFO L130 PetriNetUnfolder]: 7072/12844 cut-off events. [2023-01-28 09:06:20,628 INFO L131 PetriNetUnfolder]: For 481441/481441 co-relation queries the response was YES. [2023-01-28 09:06:20,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113249 conditions, 12844 events. 7072/12844 cut-off events. For 481441/481441 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 104359 event pairs, 2165 based on Foata normal form. 8/12852 useless extension candidates. Maximal degree in co-relation 113116. Up to 8471 conditions per place. [2023-01-28 09:06:20,770 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 460 selfloop transitions, 362 changer transitions 1/823 dead transitions. [2023-01-28 09:06:20,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 823 transitions, 28481 flow [2023-01-28 09:06:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:06:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:06:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-28 09:06:20,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-28 09:06:20,771 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-28 09:06:20,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-28 09:06:20,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:20,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-28 09:06:20,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:20,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:20,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:20,775 INFO L175 Difference]: Start difference. First operand has 374 places, 772 transitions, 26523 flow. Second operand 7 states and 2004 transitions. [2023-01-28 09:06:20,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 823 transitions, 28481 flow [2023-01-28 09:06:24,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 823 transitions, 27770 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 09:06:24,052 INFO L231 Difference]: Finished difference. Result has 377 places, 770 transitions, 26454 flow [2023-01-28 09:06:24,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25759, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26454, PETRI_PLACES=377, PETRI_TRANSITIONS=770} [2023-01-28 09:06:24,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-01-28 09:06:24,053 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 770 transitions, 26454 flow [2023-01-28 09:06:24,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:24,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:24,053 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:24,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-01-28 09:06:24,053 INFO L420 AbstractCegarLoop]: === Iteration 74 === 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 09:06:24,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:24,054 INFO L85 PathProgramCache]: Analyzing trace with hash 885212803, now seen corresponding path program 31 times [2023-01-28 09:06:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944762476] [2023-01-28 09:06:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:24,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:24,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944762476] [2023-01-28 09:06:24,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944762476] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:24,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:06:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486445020] [2023-01-28 09:06:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:06:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:06:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:06:24,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:06:24,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 770 transitions, 26454 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:24,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:24,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:06:24,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:28,540 INFO L130 PetriNetUnfolder]: 7057/12813 cut-off events. [2023-01-28 09:06:28,540 INFO L131 PetriNetUnfolder]: For 481095/481095 co-relation queries the response was YES. [2023-01-28 09:06:28,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112933 conditions, 12813 events. 7057/12813 cut-off events. For 481095/481095 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 104000 event pairs, 2155 based on Foata normal form. 10/12823 useless extension candidates. Maximal degree in co-relation 112799. Up to 8471 conditions per place. [2023-01-28 09:06:28,687 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 456 selfloop transitions, 365 changer transitions 0/821 dead transitions. [2023-01-28 09:06:28,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 821 transitions, 28471 flow [2023-01-28 09:06:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:06:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:06:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-28 09:06:28,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-28 09:06:28,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-28 09:06:28,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-28 09:06:28,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:28,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-28 09:06:28,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:28,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:28,693 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:28,693 INFO L175 Difference]: Start difference. First operand has 377 places, 770 transitions, 26454 flow. Second operand 7 states and 2003 transitions. [2023-01-28 09:06:28,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 821 transitions, 28471 flow [2023-01-28 09:06:32,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 821 transitions, 27766 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 09:06:32,159 INFO L231 Difference]: Finished difference. Result has 377 places, 772 transitions, 26518 flow [2023-01-28 09:06:32,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25714, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26518, PETRI_PLACES=377, PETRI_TRANSITIONS=772} [2023-01-28 09:06:32,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-01-28 09:06:32,160 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 772 transitions, 26518 flow [2023-01-28 09:06:32,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:32,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:32,160 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:32,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-01-28 09:06:32,161 INFO L420 AbstractCegarLoop]: === Iteration 75 === 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 09:06:32,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:32,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1581748409, now seen corresponding path program 32 times [2023-01-28 09:06:32,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:32,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146867610] [2023-01-28 09:06:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:32,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:32,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146867610] [2023-01-28 09:06:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146867610] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:32,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:06:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400395272] [2023-01-28 09:06:32,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:32,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:06:32,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:06:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:06:32,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:06:32,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 772 transitions, 26518 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:32,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:32,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:06:32,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:37,696 INFO L130 PetriNetUnfolder]: 8534/15680 cut-off events. [2023-01-28 09:06:37,697 INFO L131 PetriNetUnfolder]: For 578296/578296 co-relation queries the response was YES. [2023-01-28 09:06:37,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135815 conditions, 15680 events. 8534/15680 cut-off events. For 578296/578296 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 132955 event pairs, 1957 based on Foata normal form. 22/15702 useless extension candidates. Maximal degree in co-relation 135683. Up to 7742 conditions per place. [2023-01-28 09:06:37,860 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 727 selfloop transitions, 238 changer transitions 1/966 dead transitions. [2023-01-28 09:06:37,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 966 transitions, 32858 flow [2023-01-28 09:06:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:06:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:06:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 09:06:37,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 09:06:37,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 09:06:37,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 09:06:37,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:37,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 09:06:37,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:37,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:37,866 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:37,866 INFO L175 Difference]: Start difference. First operand has 377 places, 772 transitions, 26518 flow. Second operand 7 states and 2008 transitions. [2023-01-28 09:06:37,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 966 transitions, 32858 flow [2023-01-28 09:06:42,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 966 transitions, 32018 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 09:06:42,254 INFO L231 Difference]: Finished difference. Result has 382 places, 832 transitions, 28489 flow [2023-01-28 09:06:42,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25790, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28489, PETRI_PLACES=382, PETRI_TRANSITIONS=832} [2023-01-28 09:06:42,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2023-01-28 09:06:42,255 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 832 transitions, 28489 flow [2023-01-28 09:06:42,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:42,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:42,255 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:42,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-01-28 09:06:42,255 INFO L420 AbstractCegarLoop]: === Iteration 76 === 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 09:06:42,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash 612043710, now seen corresponding path program 34 times [2023-01-28 09:06:42,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158523592] [2023-01-28 09:06:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:42,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:42,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:42,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158523592] [2023-01-28 09:06:42,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158523592] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:42,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:42,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:06:42,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779941869] [2023-01-28 09:06:42,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:42,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:06:42,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:42,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:06:42,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:06:42,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:06:42,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 832 transitions, 28489 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:42,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:42,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:06:42,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:47,848 INFO L130 PetriNetUnfolder]: 8517/15645 cut-off events. [2023-01-28 09:06:47,848 INFO L131 PetriNetUnfolder]: For 584379/584379 co-relation queries the response was YES. [2023-01-28 09:06:47,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137168 conditions, 15645 events. 8517/15645 cut-off events. For 584379/584379 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 132610 event pairs, 3455 based on Foata normal form. 6/15651 useless extension candidates. Maximal degree in co-relation 137032. Up to 11873 conditions per place. [2023-01-28 09:06:48,025 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 671 selfloop transitions, 228 changer transitions 9/908 dead transitions. [2023-01-28 09:06:48,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 908 transitions, 30994 flow [2023-01-28 09:06:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:06:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:06:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-01-28 09:06:48,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3718732629238466 [2023-01-28 09:06:48,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-01-28 09:06:48,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-01-28 09:06:48,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:48,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-01-28 09:06:48,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:48,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:48,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:48,030 INFO L175 Difference]: Start difference. First operand has 382 places, 832 transitions, 28489 flow. Second operand 7 states and 2007 transitions. [2023-01-28 09:06:48,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 908 transitions, 30994 flow [2023-01-28 09:06:52,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 908 transitions, 30707 flow, removed 129 selfloop flow, removed 1 redundant places. [2023-01-28 09:06:52,497 INFO L231 Difference]: Finished difference. Result has 388 places, 835 transitions, 28711 flow [2023-01-28 09:06:52,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28161, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28711, PETRI_PLACES=388, PETRI_TRANSITIONS=835} [2023-01-28 09:06:52,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2023-01-28 09:06:52,497 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 835 transitions, 28711 flow [2023-01-28 09:06:52,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:52,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:52,498 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:52,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-01-28 09:06:52,498 INFO L420 AbstractCegarLoop]: === Iteration 77 === 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 09:06:52,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1055451217, now seen corresponding path program 33 times [2023-01-28 09:06:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893111166] [2023-01-28 09:06:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:52,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:52,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:52,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893111166] [2023-01-28 09:06:52,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893111166] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:52,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:52,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:06:52,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676428004] [2023-01-28 09:06:52,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:52,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:06:52,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:52,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:06:52,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:06:52,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:06:52,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 835 transitions, 28711 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:52,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:52,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:06:52,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:58,758 INFO L130 PetriNetUnfolder]: 9298/17120 cut-off events. [2023-01-28 09:06:58,758 INFO L131 PetriNetUnfolder]: For 621787/621787 co-relation queries the response was YES. [2023-01-28 09:06:58,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149111 conditions, 17120 events. 9298/17120 cut-off events. For 621787/621787 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 147417 event pairs, 1918 based on Foata normal form. 16/17136 useless extension candidates. Maximal degree in co-relation 148974. Up to 7742 conditions per place. [2023-01-28 09:06:58,952 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 706 selfloop transitions, 262 changer transitions 0/968 dead transitions. [2023-01-28 09:06:58,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 968 transitions, 33248 flow [2023-01-28 09:06:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:06:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:06:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 09:06:58,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 09:06:58,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 09:06:58,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 09:06:58,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:58,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 09:06:58,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:58,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:58,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:06:58,957 INFO L175 Difference]: Start difference. First operand has 388 places, 835 transitions, 28711 flow. Second operand 7 states and 2000 transitions. [2023-01-28 09:06:58,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 968 transitions, 33248 flow [2023-01-28 09:07:04,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 968 transitions, 32879 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 09:07:04,102 INFO L231 Difference]: Finished difference. Result has 393 places, 859 transitions, 29888 flow [2023-01-28 09:07:04,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28296, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29888, PETRI_PLACES=393, PETRI_TRANSITIONS=859} [2023-01-28 09:07:04,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2023-01-28 09:07:04,103 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 859 transitions, 29888 flow [2023-01-28 09:07:04,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:04,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:04,103 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-01-28 09:07:04,104 INFO L420 AbstractCegarLoop]: === Iteration 78 === 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 09:07:04,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1355786162, now seen corresponding path program 35 times [2023-01-28 09:07:04,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:04,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814138554] [2023-01-28 09:07:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:04,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:04,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814138554] [2023-01-28 09:07:04,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814138554] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:07:04,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332097085] [2023-01-28 09:07:04,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:07:04,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:07:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:07:04,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:07:04,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:07:04,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 09:07:04,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:07:04,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 09:07:04,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:07:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:04,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:07:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:04,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332097085] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:07:04,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:07:04,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-01-28 09:07:04,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011389552] [2023-01-28 09:07:04,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:04,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:07:04,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:04,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:07:04,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:07:04,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:07:04,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 859 transitions, 29888 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:04,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:04,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:07:04,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:11,433 INFO L130 PetriNetUnfolder]: 9310/17150 cut-off events. [2023-01-28 09:07:11,433 INFO L131 PetriNetUnfolder]: For 650631/650631 co-relation queries the response was YES. [2023-01-28 09:07:11,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151523 conditions, 17150 events. 9310/17150 cut-off events. For 650631/650631 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147813 event pairs, 3934 based on Foata normal form. 8/17158 useless extension candidates. Maximal degree in co-relation 151383. Up to 13370 conditions per place. [2023-01-28 09:07:11,652 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 692 selfloop transitions, 238 changer transitions 0/930 dead transitions. [2023-01-28 09:07:11,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 930 transitions, 32545 flow [2023-01-28 09:07:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:07:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:07:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-28 09:07:11,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-28 09:07:11,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-28 09:07:11,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-28 09:07:11,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:11,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-28 09:07:11,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:11,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:11,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:11,658 INFO L175 Difference]: Start difference. First operand has 393 places, 859 transitions, 29888 flow. Second operand 7 states and 2010 transitions. [2023-01-28 09:07:11,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 930 transitions, 32545 flow [2023-01-28 09:07:16,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 930 transitions, 32274 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-01-28 09:07:16,725 INFO L231 Difference]: Finished difference. Result has 399 places, 872 transitions, 30500 flow [2023-01-28 09:07:16,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29619, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30500, PETRI_PLACES=399, PETRI_TRANSITIONS=872} [2023-01-28 09:07:16,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2023-01-28 09:07:16,726 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 872 transitions, 30500 flow [2023-01-28 09:07:16,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:16,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:16,727 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:16,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 09:07:16,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-01-28 09:07:16,932 INFO L420 AbstractCegarLoop]: === Iteration 79 === 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 09:07:16,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:16,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2100689833, now seen corresponding path program 34 times [2023-01-28 09:07:16,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:16,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801804849] [2023-01-28 09:07:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:16,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:17,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801804849] [2023-01-28 09:07:17,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801804849] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:17,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:17,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:07:17,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785438693] [2023-01-28 09:07:17,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:17,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:07:17,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:07:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:07:17,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:07:17,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 872 transitions, 30500 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:17,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:17,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:07:17,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:23,496 INFO L130 PetriNetUnfolder]: 9359/17219 cut-off events. [2023-01-28 09:07:23,496 INFO L131 PetriNetUnfolder]: For 649363/649363 co-relation queries the response was YES. [2023-01-28 09:07:23,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152449 conditions, 17219 events. 9359/17219 cut-off events. For 649363/649363 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 148189 event pairs, 2406 based on Foata normal form. 10/17229 useless extension candidates. Maximal degree in co-relation 152307. Up to 7845 conditions per place. [2023-01-28 09:07:23,692 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 675 selfloop transitions, 293 changer transitions 0/968 dead transitions. [2023-01-28 09:07:23,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 968 transitions, 34036 flow [2023-01-28 09:07:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:07:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:07:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 09:07:23,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 09:07:23,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 09:07:23,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 09:07:23,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:23,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 09:07:23,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:23,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:23,698 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:23,698 INFO L175 Difference]: Start difference. First operand has 399 places, 872 transitions, 30500 flow. Second operand 7 states and 1997 transitions. [2023-01-28 09:07:23,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 968 transitions, 34036 flow [2023-01-28 09:07:28,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 968 transitions, 33440 flow, removed 39 selfloop flow, removed 4 redundant places. [2023-01-28 09:07:28,932 INFO L231 Difference]: Finished difference. Result has 402 places, 889 transitions, 31149 flow [2023-01-28 09:07:28,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29829, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31149, PETRI_PLACES=402, PETRI_TRANSITIONS=889} [2023-01-28 09:07:28,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2023-01-28 09:07:28,933 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 889 transitions, 31149 flow [2023-01-28 09:07:28,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:28,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:28,933 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:28,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-01-28 09:07:28,933 INFO L420 AbstractCegarLoop]: === Iteration 80 === 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 09:07:28,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1249926018, now seen corresponding path program 36 times [2023-01-28 09:07:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:28,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820239203] [2023-01-28 09:07:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:29,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:29,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820239203] [2023-01-28 09:07:29,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820239203] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:29,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:29,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:07:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850341993] [2023-01-28 09:07:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:29,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:07:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:07:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:07:29,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:07:29,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 889 transitions, 31149 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:29,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:29,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:07:29,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:35,731 INFO L130 PetriNetUnfolder]: 9365/17233 cut-off events. [2023-01-28 09:07:35,731 INFO L131 PetriNetUnfolder]: For 664120/664120 co-relation queries the response was YES. [2023-01-28 09:07:35,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152788 conditions, 17233 events. 9365/17233 cut-off events. For 664120/664120 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 149184 event pairs, 1724 based on Foata normal form. 12/17245 useless extension candidates. Maximal degree in co-relation 152647. Up to 7166 conditions per place. [2023-01-28 09:07:35,926 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 709 selfloop transitions, 298 changer transitions 1/1008 dead transitions. [2023-01-28 09:07:35,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1008 transitions, 34587 flow [2023-01-28 09:07:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:07:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:07:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2795 transitions. [2023-01-28 09:07:35,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36251621271076523 [2023-01-28 09:07:35,929 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2795 transitions. [2023-01-28 09:07:35,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2795 transitions. [2023-01-28 09:07:35,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:35,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2795 transitions. [2023-01-28 09:07:35,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 279.5) internal successors, (2795), 10 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:35,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:35,934 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:35,934 INFO L175 Difference]: Start difference. First operand has 402 places, 889 transitions, 31149 flow. Second operand 10 states and 2795 transitions. [2023-01-28 09:07:35,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1008 transitions, 34587 flow [2023-01-28 09:07:41,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1008 transitions, 33977 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-01-28 09:07:41,531 INFO L231 Difference]: Finished difference. Result has 408 places, 898 transitions, 31364 flow [2023-01-28 09:07:41,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30502, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31364, PETRI_PLACES=408, PETRI_TRANSITIONS=898} [2023-01-28 09:07:41,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2023-01-28 09:07:41,532 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 898 transitions, 31364 flow [2023-01-28 09:07:41,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:41,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:41,533 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:41,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-01-28 09:07:41,533 INFO L420 AbstractCegarLoop]: === Iteration 81 === 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 09:07:41,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash 452672000, now seen corresponding path program 37 times [2023-01-28 09:07:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949530145] [2023-01-28 09:07:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:41,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949530145] [2023-01-28 09:07:41,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949530145] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:41,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:41,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:07:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186490438] [2023-01-28 09:07:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:41,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:07:41,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:07:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:07:41,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:07:41,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 898 transitions, 31364 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:41,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:41,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:07:41,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:48,161 INFO L130 PetriNetUnfolder]: 9348/17196 cut-off events. [2023-01-28 09:07:48,161 INFO L131 PetriNetUnfolder]: For 672418/672418 co-relation queries the response was YES. [2023-01-28 09:07:48,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154706 conditions, 17196 events. 9348/17196 cut-off events. For 672418/672418 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 148024 event pairs, 3899 based on Foata normal form. 6/17202 useless extension candidates. Maximal degree in co-relation 154564. Up to 13439 conditions per place. [2023-01-28 09:07:48,373 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 719 selfloop transitions, 238 changer transitions 9/966 dead transitions. [2023-01-28 09:07:48,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 966 transitions, 34001 flow [2023-01-28 09:07:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:07:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:07:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1996 transitions. [2023-01-28 09:07:48,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36983509357050215 [2023-01-28 09:07:48,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1996 transitions. [2023-01-28 09:07:48,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1996 transitions. [2023-01-28 09:07:48,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:48,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1996 transitions. [2023-01-28 09:07:48,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:48,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:48,379 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:48,379 INFO L175 Difference]: Start difference. First operand has 408 places, 898 transitions, 31364 flow. Second operand 7 states and 1996 transitions. [2023-01-28 09:07:48,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 966 transitions, 34001 flow [2023-01-28 09:07:53,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 966 transitions, 33899 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 09:07:53,152 INFO L231 Difference]: Finished difference. Result has 414 places, 900 transitions, 31781 flow [2023-01-28 09:07:53,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31218, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31781, PETRI_PLACES=414, PETRI_TRANSITIONS=900} [2023-01-28 09:07:53,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2023-01-28 09:07:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 900 transitions, 31781 flow [2023-01-28 09:07:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:53,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:07:53,153 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:07:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-01-28 09:07:53,153 INFO L420 AbstractCegarLoop]: === Iteration 82 === 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 09:07:53,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:07:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1535935923, now seen corresponding path program 35 times [2023-01-28 09:07:53,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:07:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940076944] [2023-01-28 09:07:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:07:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:07:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:07:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:07:53,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:07:53,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940076944] [2023-01-28 09:07:53,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940076944] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:07:53,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:07:53,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:07:53,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945312065] [2023-01-28 09:07:53,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:07:53,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:07:53,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:07:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:07:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:07:53,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:07:53,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 900 transitions, 31781 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:53,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:07:53,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:07:53,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:59,660 INFO L130 PetriNetUnfolder]: 9330/17152 cut-off events. [2023-01-28 09:07:59,660 INFO L131 PetriNetUnfolder]: For 667098/667098 co-relation queries the response was YES. [2023-01-28 09:07:59,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155330 conditions, 17152 events. 9330/17152 cut-off events. For 667098/667098 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147324 event pairs, 2388 based on Foata normal form. 4/17156 useless extension candidates. Maximal degree in co-relation 155186. Up to 7804 conditions per place. [2023-01-28 09:07:59,867 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 678 selfloop transitions, 291 changer transitions 4/973 dead transitions. [2023-01-28 09:07:59,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 973 transitions, 34697 flow [2023-01-28 09:07:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:07:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:07:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1990 transitions. [2023-01-28 09:07:59,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36872336483231427 [2023-01-28 09:07:59,869 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1990 transitions. [2023-01-28 09:07:59,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1990 transitions. [2023-01-28 09:07:59,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:59,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1990 transitions. [2023-01-28 09:07:59,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.2857142857143) internal successors, (1990), 7 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:59,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:59,873 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:07:59,873 INFO L175 Difference]: Start difference. First operand has 414 places, 900 transitions, 31781 flow. Second operand 7 states and 1990 transitions. [2023-01-28 09:07:59,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 973 transitions, 34697 flow [2023-01-28 09:08:05,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 973 transitions, 34277 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-28 09:08:05,082 INFO L231 Difference]: Finished difference. Result has 417 places, 898 transitions, 31874 flow [2023-01-28 09:08:05,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31333, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31874, PETRI_PLACES=417, PETRI_TRANSITIONS=898} [2023-01-28 09:08:05,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2023-01-28 09:08:05,083 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 898 transitions, 31874 flow [2023-01-28 09:08:05,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:05,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:05,083 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-01-28 09:08:05,083 INFO L420 AbstractCegarLoop]: === Iteration 83 === 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 09:08:05,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1051359184, now seen corresponding path program 38 times [2023-01-28 09:08:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:05,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480076414] [2023-01-28 09:08:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:08:05,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:05,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480076414] [2023-01-28 09:08:05,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480076414] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:08:05,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:08:05,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:08:05,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369650034] [2023-01-28 09:08:05,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:08:05,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:08:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:08:05,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:08:05,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:08:05,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 898 transitions, 31874 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:05,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:05,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:08:05,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:12,064 INFO L130 PetriNetUnfolder]: 9295/17085 cut-off events. [2023-01-28 09:08:12,064 INFO L131 PetriNetUnfolder]: For 681570/681570 co-relation queries the response was YES. [2023-01-28 09:08:12,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155216 conditions, 17085 events. 9295/17085 cut-off events. For 681570/681570 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 146769 event pairs, 3959 based on Foata normal form. 12/17097 useless extension candidates. Maximal degree in co-relation 155072. Up to 13417 conditions per place. [2023-01-28 09:08:12,265 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 709 selfloop transitions, 245 changer transitions 1/955 dead transitions. [2023-01-28 09:08:12,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 955 transitions, 34300 flow [2023-01-28 09:08:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:08:12,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:08:12,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-28 09:08:12,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-28 09:08:12,267 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-28 09:08:12,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-28 09:08:12,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:08:12,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-28 09:08:12,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:12,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:12,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:12,271 INFO L175 Difference]: Start difference. First operand has 417 places, 898 transitions, 31874 flow. Second operand 7 states and 1999 transitions. [2023-01-28 09:08:12,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 955 transitions, 34300 flow [2023-01-28 09:08:17,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 955 transitions, 33810 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-01-28 09:08:17,160 INFO L231 Difference]: Finished difference. Result has 418 places, 900 transitions, 31925 flow [2023-01-28 09:08:17,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31343, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31925, PETRI_PLACES=418, PETRI_TRANSITIONS=900} [2023-01-28 09:08:17,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2023-01-28 09:08:17,161 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 900 transitions, 31925 flow [2023-01-28 09:08:17,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:17,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:17,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:17,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-01-28 09:08:17,161 INFO L420 AbstractCegarLoop]: === Iteration 84 === 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 09:08:17,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:17,162 INFO L85 PathProgramCache]: Analyzing trace with hash 803032932, now seen corresponding path program 39 times [2023-01-28 09:08:17,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:17,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6066798] [2023-01-28 09:08:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:17,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:08:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6066798] [2023-01-28 09:08:17,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6066798] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:08:17,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:08:17,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:08:17,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529823322] [2023-01-28 09:08:17,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:08:17,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:08:17,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:17,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:08:17,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:08:17,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:08:17,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 900 transitions, 31925 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:17,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:17,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:08:17,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:23,957 INFO L130 PetriNetUnfolder]: 9286/17066 cut-off events. [2023-01-28 09:08:23,957 INFO L131 PetriNetUnfolder]: For 681619/681619 co-relation queries the response was YES. [2023-01-28 09:08:24,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155098 conditions, 17066 events. 9286/17066 cut-off events. For 681619/681619 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 146419 event pairs, 3941 based on Foata normal form. 4/17070 useless extension candidates. Maximal degree in co-relation 154952. Up to 13417 conditions per place. [2023-01-28 09:08:24,152 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 703 selfloop transitions, 246 changer transitions 0/949 dead transitions. [2023-01-28 09:08:24,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 949 transitions, 34223 flow [2023-01-28 09:08:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:08:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:08:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 09:08:24,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 09:08:24,154 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 09:08:24,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 09:08:24,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:08:24,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 09:08:24,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:24,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:24,159 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:24,159 INFO L175 Difference]: Start difference. First operand has 418 places, 900 transitions, 31925 flow. Second operand 7 states and 1997 transitions. [2023-01-28 09:08:24,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 949 transitions, 34223 flow [2023-01-28 09:08:29,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 949 transitions, 33543 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-01-28 09:08:29,066 INFO L231 Difference]: Finished difference. Result has 420 places, 899 transitions, 31738 flow [2023-01-28 09:08:29,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31197, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31738, PETRI_PLACES=420, PETRI_TRANSITIONS=899} [2023-01-28 09:08:29,067 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2023-01-28 09:08:29,067 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 899 transitions, 31738 flow [2023-01-28 09:08:29,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:29,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:29,067 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:29,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-01-28 09:08:29,067 INFO L420 AbstractCegarLoop]: === Iteration 85 === 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 09:08:29,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1018710692, now seen corresponding path program 40 times [2023-01-28 09:08:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:29,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401523138] [2023-01-28 09:08:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:29,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:08:29,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:29,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401523138] [2023-01-28 09:08:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401523138] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:08:29,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:08:29,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:08:29,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419477595] [2023-01-28 09:08:29,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:08:29,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:08:29,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:08:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:08:29,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:08:29,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 899 transitions, 31738 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:29,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:29,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:08:29,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:35,800 INFO L130 PetriNetUnfolder]: 9262/17014 cut-off events. [2023-01-28 09:08:35,800 INFO L131 PetriNetUnfolder]: For 671050/671050 co-relation queries the response was YES. [2023-01-28 09:08:35,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154612 conditions, 17014 events. 9262/17014 cut-off events. For 671050/671050 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 146080 event pairs, 3865 based on Foata normal form. 4/17018 useless extension candidates. Maximal degree in co-relation 154466. Up to 13417 conditions per place. [2023-01-28 09:08:35,990 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 238 changer transitions 0/960 dead transitions. [2023-01-28 09:08:35,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 960 transitions, 34139 flow [2023-01-28 09:08:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:08:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:08:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-28 09:08:35,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-28 09:08:35,992 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-28 09:08:35,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-28 09:08:35,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:08:35,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-28 09:08:35,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:35,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:35,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:35,995 INFO L175 Difference]: Start difference. First operand has 420 places, 899 transitions, 31738 flow. Second operand 7 states and 2003 transitions. [2023-01-28 09:08:35,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 960 transitions, 34139 flow [2023-01-28 09:08:40,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 960 transitions, 33687 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 09:08:41,005 INFO L231 Difference]: Finished difference. Result has 423 places, 897 transitions, 31702 flow [2023-01-28 09:08:41,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31226, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31702, PETRI_PLACES=423, PETRI_TRANSITIONS=897} [2023-01-28 09:08:41,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2023-01-28 09:08:41,006 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 897 transitions, 31702 flow [2023-01-28 09:08:41,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:41,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:41,006 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:41,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-01-28 09:08:41,006 INFO L420 AbstractCegarLoop]: === Iteration 86 === 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 09:08:41,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1059464510, now seen corresponding path program 41 times [2023-01-28 09:08:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251379677] [2023-01-28 09:08:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:08:41,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251379677] [2023-01-28 09:08:41,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251379677] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:08:41,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:08:41,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:08:41,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477835060] [2023-01-28 09:08:41,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:08:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:08:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:08:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:08:41,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:08:41,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 897 transitions, 31702 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:41,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:41,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:08:41,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:47,535 INFO L130 PetriNetUnfolder]: 9246/16984 cut-off events. [2023-01-28 09:08:47,535 INFO L131 PetriNetUnfolder]: For 671428/671428 co-relation queries the response was YES. [2023-01-28 09:08:47,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154519 conditions, 16984 events. 9246/16984 cut-off events. For 671428/671428 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 145768 event pairs, 3863 based on Foata normal form. 6/16990 useless extension candidates. Maximal degree in co-relation 154373. Up to 13417 conditions per place. [2023-01-28 09:08:47,748 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 710 selfloop transitions, 236 changer transitions 6/952 dead transitions. [2023-01-28 09:08:47,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 952 transitions, 34067 flow [2023-01-28 09:08:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:08:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:08:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 09:08:47,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 09:08:47,750 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 09:08:47,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 09:08:47,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:08:47,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 09:08:47,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:47,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:47,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:47,754 INFO L175 Difference]: Start difference. First operand has 423 places, 897 transitions, 31702 flow. Second operand 7 states and 1995 transitions. [2023-01-28 09:08:47,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 952 transitions, 34067 flow [2023-01-28 09:08:53,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 952 transitions, 33614 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:08:53,471 INFO L231 Difference]: Finished difference. Result has 426 places, 895 transitions, 31646 flow [2023-01-28 09:08:53,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31206, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31646, PETRI_PLACES=426, PETRI_TRANSITIONS=895} [2023-01-28 09:08:53,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2023-01-28 09:08:53,472 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 895 transitions, 31646 flow [2023-01-28 09:08:53,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:53,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:53,472 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:53,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-01-28 09:08:53,472 INFO L420 AbstractCegarLoop]: === Iteration 87 === 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 09:08:53,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1803329933, now seen corresponding path program 36 times [2023-01-28 09:08:53,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:53,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068699474] [2023-01-28 09:08:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:53,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:08:53,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:53,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068699474] [2023-01-28 09:08:53,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068699474] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:08:53,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:08:53,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:08:53,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842319703] [2023-01-28 09:08:53,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:08:53,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:08:53,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:08:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:08:53,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:08:53,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 895 transitions, 31646 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:53,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:53,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:08:53,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:00,147 INFO L130 PetriNetUnfolder]: 9201/16809 cut-off events. [2023-01-28 09:09:00,147 INFO L131 PetriNetUnfolder]: For 664842/664842 co-relation queries the response was YES. [2023-01-28 09:09:00,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153418 conditions, 16809 events. 9201/16809 cut-off events. For 664842/664842 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 142781 event pairs, 2226 based on Foata normal form. 22/16831 useless extension candidates. Maximal degree in co-relation 153272. Up to 8427 conditions per place. [2023-01-28 09:09:00,336 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 713 selfloop transitions, 289 changer transitions 0/1002 dead transitions. [2023-01-28 09:09:00,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1002 transitions, 35250 flow [2023-01-28 09:09:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:09:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:09:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1966 transitions. [2023-01-28 09:09:00,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642764498795627 [2023-01-28 09:09:00,338 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1966 transitions. [2023-01-28 09:09:00,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1966 transitions. [2023-01-28 09:09:00,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:00,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1966 transitions. [2023-01-28 09:09:00,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.85714285714283) internal successors, (1966), 7 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:00,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:00,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:00,342 INFO L175 Difference]: Start difference. First operand has 426 places, 895 transitions, 31646 flow. Second operand 7 states and 1966 transitions. [2023-01-28 09:09:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1002 transitions, 35250 flow [2023-01-28 09:09:05,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1002 transitions, 34762 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 09:09:05,204 INFO L231 Difference]: Finished difference. Result has 428 places, 900 transitions, 32194 flow [2023-01-28 09:09:05,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30962, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32194, PETRI_PLACES=428, PETRI_TRANSITIONS=900} [2023-01-28 09:09:05,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-01-28 09:09:05,205 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 900 transitions, 32194 flow [2023-01-28 09:09:05,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:05,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:05,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:05,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-01-28 09:09:05,205 INFO L420 AbstractCegarLoop]: === Iteration 88 === 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 09:09:05,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:05,206 INFO L85 PathProgramCache]: Analyzing trace with hash -170138933, now seen corresponding path program 37 times [2023-01-28 09:09:05,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:05,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376867705] [2023-01-28 09:09:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:05,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:09:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376867705] [2023-01-28 09:09:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376867705] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:09:05,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:09:05,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:09:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806987564] [2023-01-28 09:09:05,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:09:05,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:09:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:09:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:09:05,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:09:05,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 900 transitions, 32194 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:05,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:05,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:09:05,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:12,022 INFO L130 PetriNetUnfolder]: 9418/17218 cut-off events. [2023-01-28 09:09:12,022 INFO L131 PetriNetUnfolder]: For 698901/698901 co-relation queries the response was YES. [2023-01-28 09:09:12,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158761 conditions, 17218 events. 9418/17218 cut-off events. For 698901/698901 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 147399 event pairs, 1828 based on Foata normal form. 12/17230 useless extension candidates. Maximal degree in co-relation 158613. Up to 6237 conditions per place. [2023-01-28 09:09:12,258 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 673 selfloop transitions, 383 changer transitions 0/1056 dead transitions. [2023-01-28 09:09:12,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 1056 transitions, 37704 flow [2023-01-28 09:09:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:09:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:09:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1966 transitions. [2023-01-28 09:09:12,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642764498795627 [2023-01-28 09:09:12,260 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1966 transitions. [2023-01-28 09:09:12,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1966 transitions. [2023-01-28 09:09:12,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:12,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1966 transitions. [2023-01-28 09:09:12,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.85714285714283) internal successors, (1966), 7 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:12,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:12,264 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:12,264 INFO L175 Difference]: Start difference. First operand has 428 places, 900 transitions, 32194 flow. Second operand 7 states and 1966 transitions. [2023-01-28 09:09:12,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 1056 transitions, 37704 flow [2023-01-28 09:09:17,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 1056 transitions, 36992 flow, removed 146 selfloop flow, removed 3 redundant places. [2023-01-28 09:09:17,728 INFO L231 Difference]: Finished difference. Result has 434 places, 928 transitions, 33793 flow [2023-01-28 09:09:17,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31626, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33793, PETRI_PLACES=434, PETRI_TRANSITIONS=928} [2023-01-28 09:09:17,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2023-01-28 09:09:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 928 transitions, 33793 flow [2023-01-28 09:09:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:17,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:17,730 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:17,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-01-28 09:09:17,730 INFO L420 AbstractCegarLoop]: === Iteration 89 === 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 09:09:17,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1784353919, now seen corresponding path program 38 times [2023-01-28 09:09:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747138933] [2023-01-28 09:09:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:09:17,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:17,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747138933] [2023-01-28 09:09:17,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747138933] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:09:17,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:09:17,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:09:17,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844684392] [2023-01-28 09:09:17,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:09:17,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:09:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:17,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:09:17,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:09:17,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:09:17,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 928 transitions, 33793 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:17,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:17,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:09:17,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:25,080 INFO L130 PetriNetUnfolder]: 9326/16990 cut-off events. [2023-01-28 09:09:25,080 INFO L131 PetriNetUnfolder]: For 704711/704711 co-relation queries the response was YES. [2023-01-28 09:09:25,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157640 conditions, 16990 events. 9326/16990 cut-off events. For 704711/704711 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 144047 event pairs, 2266 based on Foata normal form. 64/17054 useless extension candidates. Maximal degree in co-relation 157489. Up to 7778 conditions per place. [2023-01-28 09:09:25,276 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 724 selfloop transitions, 304 changer transitions 0/1028 dead transitions. [2023-01-28 09:09:25,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1028 transitions, 37326 flow [2023-01-28 09:09:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:09:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:09:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-28 09:09:25,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-28 09:09:25,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-28 09:09:25,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-28 09:09:25,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:25,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-28 09:09:25,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:25,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:25,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:25,282 INFO L175 Difference]: Start difference. First operand has 434 places, 928 transitions, 33793 flow. Second operand 7 states and 2005 transitions. [2023-01-28 09:09:25,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1028 transitions, 37326 flow [2023-01-28 09:09:30,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1028 transitions, 36655 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-01-28 09:09:30,789 INFO L231 Difference]: Finished difference. Result has 437 places, 928 transitions, 33795 flow [2023-01-28 09:09:30,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=32965, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33795, PETRI_PLACES=437, PETRI_TRANSITIONS=928} [2023-01-28 09:09:30,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2023-01-28 09:09:30,790 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 928 transitions, 33795 flow [2023-01-28 09:09:30,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:30,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:30,790 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:30,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-01-28 09:09:30,790 INFO L420 AbstractCegarLoop]: === Iteration 90 === 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 09:09:30,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:30,791 INFO L85 PathProgramCache]: Analyzing trace with hash 569817878, now seen corresponding path program 42 times [2023-01-28 09:09:30,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:30,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089851505] [2023-01-28 09:09:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:30,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:09:31,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:31,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089851505] [2023-01-28 09:09:31,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089851505] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:09:31,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:09:31,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:09:31,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584367330] [2023-01-28 09:09:31,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:09:31,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:09:31,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:31,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:09:31,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:09:31,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:09:31,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 928 transitions, 33795 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:31,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:31,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:09:31,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:38,045 INFO L130 PetriNetUnfolder]: 9702/17682 cut-off events. [2023-01-28 09:09:38,045 INFO L131 PetriNetUnfolder]: For 720005/720005 co-relation queries the response was YES. [2023-01-28 09:09:38,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162442 conditions, 17682 events. 9702/17682 cut-off events. For 720005/720005 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 151144 event pairs, 3934 based on Foata normal form. 8/17690 useless extension candidates. Maximal degree in co-relation 162292. Up to 13464 conditions per place. [2023-01-28 09:09:38,375 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 827 selfloop transitions, 226 changer transitions 0/1053 dead transitions. [2023-01-28 09:09:38,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1053 transitions, 38439 flow [2023-01-28 09:09:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:09:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:09:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-28 09:09:38,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-28 09:09:38,377 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-28 09:09:38,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-28 09:09:38,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:38,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-28 09:09:38,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:38,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:38,381 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:38,381 INFO L175 Difference]: Start difference. First operand has 437 places, 928 transitions, 33795 flow. Second operand 7 states and 2002 transitions. [2023-01-28 09:09:38,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1053 transitions, 38439 flow [2023-01-28 09:09:43,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1053 transitions, 38032 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 09:09:43,860 INFO L231 Difference]: Finished difference. Result has 443 places, 948 transitions, 34688 flow [2023-01-28 09:09:43,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=33420, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34688, PETRI_PLACES=443, PETRI_TRANSITIONS=948} [2023-01-28 09:09:43,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2023-01-28 09:09:43,861 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 948 transitions, 34688 flow [2023-01-28 09:09:43,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:43,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:43,861 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:43,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-01-28 09:09:43,861 INFO L420 AbstractCegarLoop]: === Iteration 91 === 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 09:09:43,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1553665876, now seen corresponding path program 43 times [2023-01-28 09:09:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:43,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728934629] [2023-01-28 09:09:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:09:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:44,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728934629] [2023-01-28 09:09:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728934629] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:09:44,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:09:44,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:09:44,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498223637] [2023-01-28 09:09:44,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:09:44,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:09:44,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:09:44,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:09:44,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:09:44,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 948 transitions, 34688 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:44,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:44,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:09:44,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:50,887 INFO L130 PetriNetUnfolder]: 9783/18047 cut-off events. [2023-01-28 09:09:50,887 INFO L131 PetriNetUnfolder]: For 737942/737942 co-relation queries the response was YES. [2023-01-28 09:09:51,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165134 conditions, 18047 events. 9783/18047 cut-off events. For 737942/737942 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 157648 event pairs, 3812 based on Foata normal form. 12/18059 useless extension candidates. Maximal degree in co-relation 164981. Up to 13464 conditions per place. [2023-01-28 09:09:51,259 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 777 selfloop transitions, 260 changer transitions 0/1037 dead transitions. [2023-01-28 09:09:51,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1037 transitions, 38509 flow [2023-01-28 09:09:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:09:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:09:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1954 transitions. [2023-01-28 09:09:51,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36205299240318695 [2023-01-28 09:09:51,260 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1954 transitions. [2023-01-28 09:09:51,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1954 transitions. [2023-01-28 09:09:51,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:51,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1954 transitions. [2023-01-28 09:09:51,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.14285714285717) internal successors, (1954), 7 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:51,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:51,264 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:51,264 INFO L175 Difference]: Start difference. First operand has 443 places, 948 transitions, 34688 flow. Second operand 7 states and 1954 transitions. [2023-01-28 09:09:51,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1037 transitions, 38509 flow [2023-01-28 09:09:57,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1037 transitions, 37991 flow, removed 53 selfloop flow, removed 3 redundant places. [2023-01-28 09:09:57,279 INFO L231 Difference]: Finished difference. Result has 450 places, 969 transitions, 35638 flow [2023-01-28 09:09:57,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=34178, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35638, PETRI_PLACES=450, PETRI_TRANSITIONS=969} [2023-01-28 09:09:57,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2023-01-28 09:09:57,280 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 969 transitions, 35638 flow [2023-01-28 09:09:57,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:57,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:57,280 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:57,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-01-28 09:09:57,280 INFO L420 AbstractCegarLoop]: === Iteration 92 === 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 09:09:57,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1404244369, now seen corresponding path program 39 times [2023-01-28 09:09:57,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:57,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33437984] [2023-01-28 09:09:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:09:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33437984] [2023-01-28 09:09:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33437984] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:09:57,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:09:57,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:09:57,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8272183] [2023-01-28 09:09:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:09:57,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:09:57,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:09:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:09:57,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:09:57,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 969 transitions, 35638 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:09:57,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:57,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:09:57,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:04,707 INFO L130 PetriNetUnfolder]: 9691/17819 cut-off events. [2023-01-28 09:10:04,708 INFO L131 PetriNetUnfolder]: For 752530/752530 co-relation queries the response was YES. [2023-01-28 09:10:04,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165072 conditions, 17819 events. 9691/17819 cut-off events. For 752530/752530 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 154067 event pairs, 2360 based on Foata normal form. 64/17883 useless extension candidates. Maximal degree in co-relation 164915. Up to 8561 conditions per place. [2023-01-28 09:10:04,920 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 747 selfloop transitions, 315 changer transitions 0/1062 dead transitions. [2023-01-28 09:10:04,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1062 transitions, 38896 flow [2023-01-28 09:10:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:10:04,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:10:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:10:04,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:10:04,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:10:04,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:10:04,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:04,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:10:04,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:04,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:04,926 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:04,926 INFO L175 Difference]: Start difference. First operand has 450 places, 969 transitions, 35638 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:10:04,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1062 transitions, 38896 flow [2023-01-28 09:10:11,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1062 transitions, 38437 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 09:10:11,244 INFO L231 Difference]: Finished difference. Result has 452 places, 967 transitions, 35732 flow [2023-01-28 09:10:11,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35102, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35732, PETRI_PLACES=452, PETRI_TRANSITIONS=967} [2023-01-28 09:10:11,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-01-28 09:10:11,245 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 967 transitions, 35732 flow [2023-01-28 09:10:11,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:11,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:11,245 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:11,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-01-28 09:10:11,245 INFO L420 AbstractCegarLoop]: === Iteration 93 === 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 09:10:11,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash 251251914, now seen corresponding path program 44 times [2023-01-28 09:10:11,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:11,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215488722] [2023-01-28 09:10:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:11,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:10:11,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:11,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215488722] [2023-01-28 09:10:11,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215488722] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:11,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:11,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:10:11,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180784332] [2023-01-28 09:10:11,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:11,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:10:11,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:10:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:10:11,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:10:11,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 967 transitions, 35732 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:11,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:11,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:10:11,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:18,570 INFO L130 PetriNetUnfolder]: 9680/17786 cut-off events. [2023-01-28 09:10:18,571 INFO L131 PetriNetUnfolder]: For 749678/749678 co-relation queries the response was YES. [2023-01-28 09:10:18,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165032 conditions, 17786 events. 9680/17786 cut-off events. For 749678/749678 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 153970 event pairs, 3970 based on Foata normal form. 8/17794 useless extension candidates. Maximal degree in co-relation 164875. Up to 13236 conditions per place. [2023-01-28 09:10:18,805 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 742 selfloop transitions, 271 changer transitions 0/1013 dead transitions. [2023-01-28 09:10:18,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1013 transitions, 38078 flow [2023-01-28 09:10:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:10:18,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:10:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 09:10:18,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 09:10:18,808 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 09:10:18,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 09:10:18,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:18,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 09:10:18,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:18,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:18,812 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:18,812 INFO L175 Difference]: Start difference. First operand has 452 places, 967 transitions, 35732 flow. Second operand 7 states and 1995 transitions. [2023-01-28 09:10:18,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1013 transitions, 38078 flow [2023-01-28 09:10:24,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1013 transitions, 37529 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-28 09:10:24,737 INFO L231 Difference]: Finished difference. Result has 452 places, 964 transitions, 35623 flow [2023-01-28 09:10:24,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35623, PETRI_PLACES=452, PETRI_TRANSITIONS=964} [2023-01-28 09:10:24,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-01-28 09:10:24,738 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 964 transitions, 35623 flow [2023-01-28 09:10:24,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:24,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:24,738 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:24,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-01-28 09:10:24,738 INFO L420 AbstractCegarLoop]: === Iteration 94 === 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 09:10:24,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1180859485, now seen corresponding path program 40 times [2023-01-28 09:10:24,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:24,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075769259] [2023-01-28 09:10:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:24,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:10:24,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:24,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075769259] [2023-01-28 09:10:24,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075769259] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:24,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:24,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:10:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938793399] [2023-01-28 09:10:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:24,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:10:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:24,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:10:24,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:10:24,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:10:24,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 964 transitions, 35623 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:24,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:24,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:10:24,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:32,899 INFO L130 PetriNetUnfolder]: 10063/18572 cut-off events. [2023-01-28 09:10:32,899 INFO L131 PetriNetUnfolder]: For 762819/762819 co-relation queries the response was YES. [2023-01-28 09:10:33,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170815 conditions, 18572 events. 10063/18572 cut-off events. For 762819/762819 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 162637 event pairs, 2256 based on Foata normal form. 58/18630 useless extension candidates. Maximal degree in co-relation 170659. Up to 11871 conditions per place. [2023-01-28 09:10:33,122 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 758 selfloop transitions, 338 changer transitions 0/1096 dead transitions. [2023-01-28 09:10:33,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1096 transitions, 40244 flow [2023-01-28 09:10:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:10:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:10:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-28 09:10:33,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-28 09:10:33,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-28 09:10:33,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-28 09:10:33,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:33,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-28 09:10:33,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:33,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:33,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:33,127 INFO L175 Difference]: Start difference. First operand has 452 places, 964 transitions, 35623 flow. Second operand 7 states and 2002 transitions. [2023-01-28 09:10:33,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1096 transitions, 40244 flow [2023-01-28 09:10:39,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1096 transitions, 39702 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 09:10:39,849 INFO L231 Difference]: Finished difference. Result has 456 places, 997 transitions, 37153 flow [2023-01-28 09:10:39,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37153, PETRI_PLACES=456, PETRI_TRANSITIONS=997} [2023-01-28 09:10:39,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2023-01-28 09:10:39,850 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 997 transitions, 37153 flow [2023-01-28 09:10:39,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:39,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:39,850 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:39,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-01-28 09:10:39,850 INFO L420 AbstractCegarLoop]: === Iteration 95 === 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 09:10:39,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1004924419, now seen corresponding path program 41 times [2023-01-28 09:10:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:39,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936624226] [2023-01-28 09:10:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:39,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:10:40,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:40,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936624226] [2023-01-28 09:10:40,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936624226] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:40,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:40,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:10:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277305816] [2023-01-28 09:10:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:40,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:10:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:10:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:10:40,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:10:40,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 997 transitions, 37153 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:40,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:40,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:10:40,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:47,814 INFO L130 PetriNetUnfolder]: 10039/18524 cut-off events. [2023-01-28 09:10:47,814 INFO L131 PetriNetUnfolder]: For 786608/786608 co-relation queries the response was YES. [2023-01-28 09:10:47,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172214 conditions, 18524 events. 10039/18524 cut-off events. For 786608/786608 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 163177 event pairs, 1386 based on Foata normal form. 12/18536 useless extension candidates. Maximal degree in co-relation 172055. Up to 12189 conditions per place. [2023-01-28 09:10:48,043 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 886 selfloop transitions, 212 changer transitions 3/1101 dead transitions. [2023-01-28 09:10:48,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1101 transitions, 41341 flow [2023-01-28 09:10:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:10:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:10:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1952 transitions. [2023-01-28 09:10:48,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3616824161571243 [2023-01-28 09:10:48,045 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1952 transitions. [2023-01-28 09:10:48,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1952 transitions. [2023-01-28 09:10:48,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:48,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1952 transitions. [2023-01-28 09:10:48,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.85714285714283) internal successors, (1952), 7 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:48,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:48,048 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:48,048 INFO L175 Difference]: Start difference. First operand has 456 places, 997 transitions, 37153 flow. Second operand 7 states and 1952 transitions. [2023-01-28 09:10:48,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1101 transitions, 41341 flow [2023-01-28 09:10:54,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1101 transitions, 40896 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-28 09:10:54,792 INFO L231 Difference]: Finished difference. Result has 462 places, 1005 transitions, 37589 flow [2023-01-28 09:10:54,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=36713, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37589, PETRI_PLACES=462, PETRI_TRANSITIONS=1005} [2023-01-28 09:10:54,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2023-01-28 09:10:54,793 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1005 transitions, 37589 flow [2023-01-28 09:10:54,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:54,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:54,794 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:54,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-01-28 09:10:54,794 INFO L420 AbstractCegarLoop]: === Iteration 96 === 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 09:10:54,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1818762133, now seen corresponding path program 42 times [2023-01-28 09:10:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731631309] [2023-01-28 09:10:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:54,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:10:54,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731631309] [2023-01-28 09:10:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731631309] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:10:54,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280834910] [2023-01-28 09:10:54,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:54,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:10:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:54,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:10:54,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:10:54,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:10:54,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1005 transitions, 37589 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:54,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:54,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:10:54,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:11:02,572 INFO L130 PetriNetUnfolder]: 10024/18463 cut-off events. [2023-01-28 09:11:02,573 INFO L131 PetriNetUnfolder]: For 801888/801888 co-relation queries the response was YES. [2023-01-28 09:11:02,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173433 conditions, 18463 events. 10024/18463 cut-off events. For 801888/801888 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 161210 event pairs, 2256 based on Foata normal form. 18/18481 useless extension candidates. Maximal degree in co-relation 173272. Up to 11823 conditions per place. [2023-01-28 09:11:02,856 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 767 selfloop transitions, 340 changer transitions 0/1107 dead transitions. [2023-01-28 09:11:02,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1107 transitions, 41291 flow [2023-01-28 09:11:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:11:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:11:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1960 transitions. [2023-01-28 09:11:02,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631647211413748 [2023-01-28 09:11:02,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1960 transitions. [2023-01-28 09:11:02,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1960 transitions. [2023-01-28 09:11:02,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:11:02,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1960 transitions. [2023-01-28 09:11:02,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:02,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:02,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:02,862 INFO L175 Difference]: Start difference. First operand has 462 places, 1005 transitions, 37589 flow. Second operand 7 states and 1960 transitions. [2023-01-28 09:11:02,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1107 transitions, 41291 flow [2023-01-28 09:11:09,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1107 transitions, 40785 flow, removed 78 selfloop flow, removed 2 redundant places. [2023-01-28 09:11:09,908 INFO L231 Difference]: Finished difference. Result has 468 places, 1010 transitions, 38027 flow [2023-01-28 09:11:09,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37102, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38027, PETRI_PLACES=468, PETRI_TRANSITIONS=1010} [2023-01-28 09:11:09,909 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2023-01-28 09:11:09,909 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1010 transitions, 38027 flow [2023-01-28 09:11:09,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:09,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:11:09,909 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:11:09,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-01-28 09:11:09,909 INFO L420 AbstractCegarLoop]: === Iteration 97 === 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 09:11:09,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:11:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash 650218813, now seen corresponding path program 43 times [2023-01-28 09:11:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:11:09,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586006617] [2023-01-28 09:11:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:11:09,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:11:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:11:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:11:10,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:11:10,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586006617] [2023-01-28 09:11:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586006617] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:11:10,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:11:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:11:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005307808] [2023-01-28 09:11:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:11:10,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:11:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:11:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:11:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:11:10,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:11:10,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1010 transitions, 38027 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:10,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:11:10,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:11:10,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:11:17,724 INFO L130 PetriNetUnfolder]: 9982/18314 cut-off events. [2023-01-28 09:11:17,724 INFO L131 PetriNetUnfolder]: For 807848/807848 co-relation queries the response was YES. [2023-01-28 09:11:17,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173147 conditions, 18314 events. 9982/18314 cut-off events. For 807848/807848 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158827 event pairs, 2238 based on Foata normal form. 18/18332 useless extension candidates. Maximal degree in co-relation 172984. Up to 11823 conditions per place. [2023-01-28 09:11:17,996 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 766 selfloop transitions, 337 changer transitions 0/1103 dead transitions. [2023-01-28 09:11:17,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1103 transitions, 41393 flow [2023-01-28 09:11:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:11:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:11:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1957 transitions. [2023-01-28 09:11:17,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3626088567722809 [2023-01-28 09:11:17,997 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1957 transitions. [2023-01-28 09:11:17,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1957 transitions. [2023-01-28 09:11:17,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:11:17,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1957 transitions. [2023-01-28 09:11:17,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.57142857142856) internal successors, (1957), 7 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:18,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:18,001 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:18,001 INFO L175 Difference]: Start difference. First operand has 468 places, 1010 transitions, 38027 flow. Second operand 7 states and 1957 transitions. [2023-01-28 09:11:18,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1103 transitions, 41393 flow [2023-01-28 09:11:25,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1103 transitions, 40709 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-01-28 09:11:25,441 INFO L231 Difference]: Finished difference. Result has 472 places, 1010 transitions, 38183 flow [2023-01-28 09:11:25,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37315, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38183, PETRI_PLACES=472, PETRI_TRANSITIONS=1010} [2023-01-28 09:11:25,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2023-01-28 09:11:25,442 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1010 transitions, 38183 flow [2023-01-28 09:11:25,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:25,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:11:25,442 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:11:25,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-01-28 09:11:25,442 INFO L420 AbstractCegarLoop]: === Iteration 98 === 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 09:11:25,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:11:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1198212747, now seen corresponding path program 44 times [2023-01-28 09:11:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:11:25,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203290254] [2023-01-28 09:11:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:11:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:11:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:11:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:11:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:11:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203290254] [2023-01-28 09:11:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203290254] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:11:25,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:11:25,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:11:25,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69301762] [2023-01-28 09:11:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:11:25,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:11:25,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:11:25,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:11:25,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:11:25,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:11:25,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1010 transitions, 38183 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:25,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:11:25,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:11:25,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:11:33,368 INFO L130 PetriNetUnfolder]: 9977/18289 cut-off events. [2023-01-28 09:11:33,369 INFO L131 PetriNetUnfolder]: For 812731/812731 co-relation queries the response was YES. [2023-01-28 09:11:33,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173569 conditions, 18289 events. 9977/18289 cut-off events. For 812731/812731 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158466 event pairs, 2494 based on Foata normal form. 4/18293 useless extension candidates. Maximal degree in co-relation 173404. Up to 8750 conditions per place. [2023-01-28 09:11:33,604 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 357 changer transitions 0/1079 dead transitions. [2023-01-28 09:11:33,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1079 transitions, 41094 flow [2023-01-28 09:11:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:11:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:11:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-28 09:11:33,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-28 09:11:33,606 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-28 09:11:33,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-28 09:11:33,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:11:33,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-28 09:11:33,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:33,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:33,609 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:33,609 INFO L175 Difference]: Start difference. First operand has 472 places, 1010 transitions, 38183 flow. Second operand 7 states and 2002 transitions. [2023-01-28 09:11:33,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1079 transitions, 41094 flow [2023-01-28 09:11:43,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1079 transitions, 40599 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:11:43,105 INFO L231 Difference]: Finished difference. Result has 477 places, 1012 transitions, 38509 flow [2023-01-28 09:11:43,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37667, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38509, PETRI_PLACES=477, PETRI_TRANSITIONS=1012} [2023-01-28 09:11:43,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2023-01-28 09:11:43,107 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1012 transitions, 38509 flow [2023-01-28 09:11:43,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:43,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:11:43,115 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:11:43,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-01-28 09:11:43,115 INFO L420 AbstractCegarLoop]: === Iteration 99 === 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 09:11:43,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:11:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash -816504591, now seen corresponding path program 45 times [2023-01-28 09:11:43,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:11:43,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846153991] [2023-01-28 09:11:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:11:43,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:11:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:11:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:11:43,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:11:43,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846153991] [2023-01-28 09:11:43,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846153991] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:11:43,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:11:43,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:11:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528937951] [2023-01-28 09:11:43,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:11:43,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:11:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:11:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:11:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:11:43,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:11:43,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1012 transitions, 38509 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:43,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:11:43,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:11:43,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:11:54,366 INFO L130 PetriNetUnfolder]: 10060/18384 cut-off events. [2023-01-28 09:11:54,367 INFO L131 PetriNetUnfolder]: For 846341/846341 co-relation queries the response was YES. [2023-01-28 09:11:54,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175417 conditions, 18384 events. 10060/18384 cut-off events. For 846341/846341 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 158664 event pairs, 2508 based on Foata normal form. 26/18410 useless extension candidates. Maximal degree in co-relation 175250. Up to 8770 conditions per place. [2023-01-28 09:11:54,710 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 392 changer transitions 0/1124 dead transitions. [2023-01-28 09:11:54,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1124 transitions, 43331 flow [2023-01-28 09:11:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:11:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:11:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-28 09:11:54,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-28 09:11:54,712 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-28 09:11:54,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-28 09:11:54,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:11:54,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-28 09:11:54,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:54,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:54,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:11:54,718 INFO L175 Difference]: Start difference. First operand has 477 places, 1012 transitions, 38509 flow. Second operand 7 states and 2004 transitions. [2023-01-28 09:11:54,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1124 transitions, 43331 flow [2023-01-28 09:12:04,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1124 transitions, 42761 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-28 09:12:04,460 INFO L231 Difference]: Finished difference. Result has 483 places, 1048 transitions, 40439 flow [2023-01-28 09:12:04,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37932, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40439, PETRI_PLACES=483, PETRI_TRANSITIONS=1048} [2023-01-28 09:12:04,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2023-01-28 09:12:04,461 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1048 transitions, 40439 flow [2023-01-28 09:12:04,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:04,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:12:04,462 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:12:04,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-01-28 09:12:04,462 INFO L420 AbstractCegarLoop]: === Iteration 100 === 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 09:12:04,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:12:04,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1876950500, now seen corresponding path program 45 times [2023-01-28 09:12:04,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:12:04,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221856695] [2023-01-28 09:12:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:12:04,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:12:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:12:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:12:04,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:12:04,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221856695] [2023-01-28 09:12:04,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221856695] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:12:04,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:12:04,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:12:04,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617844178] [2023-01-28 09:12:04,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:12:04,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:12:04,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:12:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:12:04,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:12:04,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:12:04,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1048 transitions, 40439 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:04,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:12:04,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:12:04,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:12:12,488 INFO L130 PetriNetUnfolder]: 10016/18282 cut-off events. [2023-01-28 09:12:12,488 INFO L131 PetriNetUnfolder]: For 863424/863424 co-relation queries the response was YES. [2023-01-28 09:12:12,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176163 conditions, 18282 events. 10016/18282 cut-off events. For 863424/863424 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 157772 event pairs, 4057 based on Foata normal form. 16/18298 useless extension candidates. Maximal degree in co-relation 175993. Up to 13839 conditions per place. [2023-01-28 09:12:12,719 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 837 selfloop transitions, 269 changer transitions 0/1106 dead transitions. [2023-01-28 09:12:12,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1106 transitions, 43118 flow [2023-01-28 09:12:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:12:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:12:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-28 09:12:12,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-28 09:12:12,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-28 09:12:12,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-28 09:12:12,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:12:12,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-28 09:12:12,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:12,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:12,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:12,725 INFO L175 Difference]: Start difference. First operand has 483 places, 1048 transitions, 40439 flow. Second operand 7 states and 2010 transitions. [2023-01-28 09:12:12,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1106 transitions, 43118 flow [2023-01-28 09:12:20,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1106 transitions, 42762 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-01-28 09:12:20,120 INFO L231 Difference]: Finished difference. Result has 488 places, 1050 transitions, 40692 flow [2023-01-28 09:12:20,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40083, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40692, PETRI_PLACES=488, PETRI_TRANSITIONS=1050} [2023-01-28 09:12:20,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2023-01-28 09:12:20,123 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 1050 transitions, 40692 flow [2023-01-28 09:12:20,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:20,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:12:20,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:12:20,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-01-28 09:12:20,124 INFO L420 AbstractCegarLoop]: === Iteration 101 === 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 09:12:20,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:12:20,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1666416104, now seen corresponding path program 46 times [2023-01-28 09:12:20,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:12:20,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517966401] [2023-01-28 09:12:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:12:20,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:12:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:12:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:12:20,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:12:20,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517966401] [2023-01-28 09:12:20,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517966401] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:12:20,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:12:20,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:12:20,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455071909] [2023-01-28 09:12:20,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:12:20,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:12:20,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:12:20,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:12:20,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:12:20,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:12:20,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1050 transitions, 40692 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:20,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:12:20,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:12:20,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:12:28,411 INFO L130 PetriNetUnfolder]: 10031/18343 cut-off events. [2023-01-28 09:12:28,412 INFO L131 PetriNetUnfolder]: For 865036/865036 co-relation queries the response was YES. [2023-01-28 09:12:28,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176480 conditions, 18343 events. 10031/18343 cut-off events. For 865036/865036 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 158794 event pairs, 3997 based on Foata normal form. 4/18347 useless extension candidates. Maximal degree in co-relation 176309. Up to 13839 conditions per place. [2023-01-28 09:12:28,650 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 874 selfloop transitions, 238 changer transitions 0/1112 dead transitions. [2023-01-28 09:12:28,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1112 transitions, 43649 flow [2023-01-28 09:12:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:12:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:12:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1998 transitions. [2023-01-28 09:12:28,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3702056698165648 [2023-01-28 09:12:28,652 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1998 transitions. [2023-01-28 09:12:28,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1998 transitions. [2023-01-28 09:12:28,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:12:28,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1998 transitions. [2023-01-28 09:12:28,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.42857142857144) internal successors, (1998), 7 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:28,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:28,656 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:28,656 INFO L175 Difference]: Start difference. First operand has 488 places, 1050 transitions, 40692 flow. Second operand 7 states and 1998 transitions. [2023-01-28 09:12:28,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1112 transitions, 43649 flow [2023-01-28 09:12:36,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 1112 transitions, 43138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:12:36,204 INFO L231 Difference]: Finished difference. Result has 493 places, 1055 transitions, 40918 flow [2023-01-28 09:12:36,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40189, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40918, PETRI_PLACES=493, PETRI_TRANSITIONS=1055} [2023-01-28 09:12:36,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-01-28 09:12:36,205 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1055 transitions, 40918 flow [2023-01-28 09:12:36,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:36,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:12:36,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:12:36,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2023-01-28 09:12:36,205 INFO L420 AbstractCegarLoop]: === Iteration 102 === 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 09:12:36,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:12:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash -799839490, now seen corresponding path program 47 times [2023-01-28 09:12:36,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:12:36,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643558699] [2023-01-28 09:12:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:12:36,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:12:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:12:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:12:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:12:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643558699] [2023-01-28 09:12:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643558699] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:12:36,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:12:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:12:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573079086] [2023-01-28 09:12:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:12:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:12:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:12:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:12:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:12:36,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:12:36,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1055 transitions, 40918 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:36,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:12:36,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:12:36,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:12:44,582 INFO L130 PetriNetUnfolder]: 10029/18331 cut-off events. [2023-01-28 09:12:44,582 INFO L131 PetriNetUnfolder]: For 871630/871630 co-relation queries the response was YES. [2023-01-28 09:12:44,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177602 conditions, 18331 events. 10029/18331 cut-off events. For 871630/871630 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 159365 event pairs, 1802 based on Foata normal form. 4/18335 useless extension candidates. Maximal degree in co-relation 177428. Up to 6972 conditions per place. [2023-01-28 09:12:44,830 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 842 selfloop transitions, 315 changer transitions 1/1158 dead transitions. [2023-01-28 09:12:44,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1158 transitions, 44653 flow [2023-01-28 09:12:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:12:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:12:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2509 transitions. [2023-01-28 09:12:44,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3615794783109958 [2023-01-28 09:12:44,832 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2509 transitions. [2023-01-28 09:12:44,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2509 transitions. [2023-01-28 09:12:44,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:12:44,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2509 transitions. [2023-01-28 09:12:44,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 278.77777777777777) internal successors, (2509), 9 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:44,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:44,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:44,837 INFO L175 Difference]: Start difference. First operand has 493 places, 1055 transitions, 40918 flow. Second operand 9 states and 2509 transitions. [2023-01-28 09:12:44,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1158 transitions, 44653 flow [2023-01-28 09:12:53,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1158 transitions, 44435 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-01-28 09:12:53,775 INFO L231 Difference]: Finished difference. Result has 502 places, 1069 transitions, 41977 flow [2023-01-28 09:12:53,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40708, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41977, PETRI_PLACES=502, PETRI_TRANSITIONS=1069} [2023-01-28 09:12:53,775 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 472 predicate places. [2023-01-28 09:12:53,775 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 1069 transitions, 41977 flow [2023-01-28 09:12:53,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:53,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:12:53,776 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:12:53,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-01-28 09:12:53,776 INFO L420 AbstractCegarLoop]: === Iteration 103 === 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 09:12:53,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:12:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1456307273, now seen corresponding path program 46 times [2023-01-28 09:12:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:12:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343271325] [2023-01-28 09:12:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:12:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:12:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:12:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:12:54,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:12:54,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343271325] [2023-01-28 09:12:54,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343271325] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:12:54,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:12:54,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:12:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930717853] [2023-01-28 09:12:54,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:12:54,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:12:54,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:12:54,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:12:54,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:12:54,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:12:54,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1069 transitions, 41977 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:12:54,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:12:54,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:12:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:13:01,986 INFO L130 PetriNetUnfolder]: 10013/18289 cut-off events. [2023-01-28 09:13:01,987 INFO L131 PetriNetUnfolder]: For 891965/891965 co-relation queries the response was YES. [2023-01-28 09:13:02,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180532 conditions, 18289 events. 10013/18289 cut-off events. For 891965/891965 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 157953 event pairs, 2500 based on Foata normal form. 10/18299 useless extension candidates. Maximal degree in co-relation 180356. Up to 8817 conditions per place. [2023-01-28 09:13:02,236 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 408 changer transitions 0/1140 dead transitions. [2023-01-28 09:13:02,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 1140 transitions, 45212 flow [2023-01-28 09:13:02,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:13:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:13:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-28 09:13:02,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-28 09:13:02,238 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-28 09:13:02,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-28 09:13:02,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:13:02,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-28 09:13:02,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:02,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:02,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:02,241 INFO L175 Difference]: Start difference. First operand has 502 places, 1069 transitions, 41977 flow. Second operand 7 states and 2002 transitions. [2023-01-28 09:13:02,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 1140 transitions, 45212 flow [2023-01-28 09:13:10,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1140 transitions, 44105 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-01-28 09:13:10,983 INFO L231 Difference]: Finished difference. Result has 497 places, 1075 transitions, 42023 flow [2023-01-28 09:13:10,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40790, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42023, PETRI_PLACES=497, PETRI_TRANSITIONS=1075} [2023-01-28 09:13:10,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 467 predicate places. [2023-01-28 09:13:10,984 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1075 transitions, 42023 flow [2023-01-28 09:13:10,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:10,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:13:10,984 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:13:10,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2023-01-28 09:13:10,984 INFO L420 AbstractCegarLoop]: === Iteration 104 === 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 09:13:10,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:13:10,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1523969853, now seen corresponding path program 47 times [2023-01-28 09:13:10,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:13:10,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622403829] [2023-01-28 09:13:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:13:10,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:13:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:13:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:13:11,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:13:11,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622403829] [2023-01-28 09:13:11,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622403829] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:13:11,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:13:11,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:13:11,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470095989] [2023-01-28 09:13:11,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:13:11,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:13:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:13:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:13:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:13:11,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:13:11,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1075 transitions, 42023 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:11,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:13:11,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:13:11,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:13:20,616 INFO L130 PetriNetUnfolder]: 10031/18295 cut-off events. [2023-01-28 09:13:20,616 INFO L131 PetriNetUnfolder]: For 858050/858050 co-relation queries the response was YES. [2023-01-28 09:13:20,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178444 conditions, 18295 events. 10031/18295 cut-off events. For 858050/858050 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 157672 event pairs, 2488 based on Foata normal form. 6/18301 useless extension candidates. Maximal degree in co-relation 178273. Up to 8833 conditions per place. [2023-01-28 09:13:20,864 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 737 selfloop transitions, 412 changer transitions 0/1149 dead transitions. [2023-01-28 09:13:20,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1149 transitions, 45618 flow [2023-01-28 09:13:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:13:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:13:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1998 transitions. [2023-01-28 09:13:20,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3702056698165648 [2023-01-28 09:13:20,866 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1998 transitions. [2023-01-28 09:13:20,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1998 transitions. [2023-01-28 09:13:20,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:13:20,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1998 transitions. [2023-01-28 09:13:20,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.42857142857144) internal successors, (1998), 7 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:20,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:20,870 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:20,870 INFO L175 Difference]: Start difference. First operand has 497 places, 1075 transitions, 42023 flow. Second operand 7 states and 1998 transitions. [2023-01-28 09:13:20,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1149 transitions, 45618 flow [2023-01-28 09:13:29,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1149 transitions, 44664 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-01-28 09:13:29,157 INFO L231 Difference]: Finished difference. Result has 493 places, 1086 transitions, 42557 flow [2023-01-28 09:13:29,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41018, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42557, PETRI_PLACES=493, PETRI_TRANSITIONS=1086} [2023-01-28 09:13:29,158 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-01-28 09:13:29,158 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1086 transitions, 42557 flow [2023-01-28 09:13:29,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:29,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:13:29,159 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:13:29,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2023-01-28 09:13:29,159 INFO L420 AbstractCegarLoop]: === Iteration 105 === 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 09:13:29,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:13:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1855592650, now seen corresponding path program 48 times [2023-01-28 09:13:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:13:29,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227176325] [2023-01-28 09:13:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:13:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:13:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:13:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:13:29,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:13:29,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227176325] [2023-01-28 09:13:29,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227176325] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:13:29,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:13:29,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:13:29,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038946498] [2023-01-28 09:13:29,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:13:29,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:13:29,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:13:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:13:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:13:29,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:13:29,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1086 transitions, 42557 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:29,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:13:29,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:13:29,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:13:37,421 INFO L130 PetriNetUnfolder]: 10007/18243 cut-off events. [2023-01-28 09:13:37,421 INFO L131 PetriNetUnfolder]: For 843078/843078 co-relation queries the response was YES. [2023-01-28 09:13:37,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177162 conditions, 18243 events. 10007/18243 cut-off events. For 843078/843078 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 157203 event pairs, 4038 based on Foata normal form. 4/18247 useless extension candidates. Maximal degree in co-relation 176995. Up to 13810 conditions per place. [2023-01-28 09:13:37,663 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 865 selfloop transitions, 273 changer transitions 0/1138 dead transitions. [2023-01-28 09:13:37,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1138 transitions, 45167 flow [2023-01-28 09:13:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:13:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:13:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 09:13:37,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 09:13:37,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 09:13:37,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 09:13:37,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:13:37,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 09:13:37,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:37,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:37,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:37,669 INFO L175 Difference]: Start difference. First operand has 493 places, 1086 transitions, 42557 flow. Second operand 7 states and 2006 transitions. [2023-01-28 09:13:37,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1138 transitions, 45167 flow [2023-01-28 09:13:45,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1138 transitions, 44418 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-01-28 09:13:45,154 INFO L231 Difference]: Finished difference. Result has 493 places, 1085 transitions, 42313 flow [2023-01-28 09:13:45,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41734, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42313, PETRI_PLACES=493, PETRI_TRANSITIONS=1085} [2023-01-28 09:13:45,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-01-28 09:13:45,155 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1085 transitions, 42313 flow [2023-01-28 09:13:45,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:45,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:13:45,155 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:13:45,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2023-01-28 09:13:45,155 INFO L420 AbstractCegarLoop]: === Iteration 106 === 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 09:13:45,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:13:45,155 INFO L85 PathProgramCache]: Analyzing trace with hash -422916263, now seen corresponding path program 48 times [2023-01-28 09:13:45,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:13:45,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682604290] [2023-01-28 09:13:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:13:45,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:13:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:13:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:13:45,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:13:45,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682604290] [2023-01-28 09:13:45,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682604290] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:13:45,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:13:45,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:13:45,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848553203] [2023-01-28 09:13:45,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:13:45,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:13:45,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:13:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:13:45,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:13:45,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 09:13:45,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1085 transitions, 42313 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:45,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:13:45,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 09:13:45,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:13:53,793 INFO L130 PetriNetUnfolder]: 9997/18221 cut-off events. [2023-01-28 09:13:53,794 INFO L131 PetriNetUnfolder]: For 834612/834612 co-relation queries the response was YES. [2023-01-28 09:13:53,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176949 conditions, 18221 events. 9997/18221 cut-off events. For 834612/834612 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 157717 event pairs, 1362 based on Foata normal form. 4/18225 useless extension candidates. Maximal degree in co-relation 176784. Up to 11902 conditions per place. [2023-01-28 09:13:54,024 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 924 selfloop transitions, 242 changer transitions 2/1168 dead transitions. [2023-01-28 09:13:54,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1168 transitions, 46042 flow [2023-01-28 09:13:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:13:54,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:13:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1951 transitions. [2023-01-28 09:13:54,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.361497128034093 [2023-01-28 09:13:54,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1951 transitions. [2023-01-28 09:13:54,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1951 transitions. [2023-01-28 09:13:54,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:13:54,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1951 transitions. [2023-01-28 09:13:54,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.7142857142857) internal successors, (1951), 7 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:54,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:54,029 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:13:54,029 INFO L175 Difference]: Start difference. First operand has 493 places, 1085 transitions, 42313 flow. Second operand 7 states and 1951 transitions. [2023-01-28 09:13:54,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1168 transitions, 46042 flow [2023-01-28 09:14:01,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1168 transitions, 45543 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:14:01,433 INFO L231 Difference]: Finished difference. Result has 496 places, 1082 transitions, 42184 flow [2023-01-28 09:14:01,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41742, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42184, PETRI_PLACES=496, PETRI_TRANSITIONS=1082} [2023-01-28 09:14:01,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2023-01-28 09:14:01,433 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 1082 transitions, 42184 flow [2023-01-28 09:14:01,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:01,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:14:01,434 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:14:01,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2023-01-28 09:14:01,434 INFO L420 AbstractCegarLoop]: === Iteration 107 === 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 09:14:01,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:14:01,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1141164956, now seen corresponding path program 49 times [2023-01-28 09:14:01,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:14:01,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435315441] [2023-01-28 09:14:01,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:14:01,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:14:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:14:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:14:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:14:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435315441] [2023-01-28 09:14:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435315441] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:14:01,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:14:01,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:14:01,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721855335] [2023-01-28 09:14:01,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:14:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:14:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:14:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:14:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:14:01,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:14:01,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1082 transitions, 42184 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:01,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:14:01,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:14:01,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:14:10,722 INFO L130 PetriNetUnfolder]: 9978/18184 cut-off events. [2023-01-28 09:14:10,723 INFO L131 PetriNetUnfolder]: For 851743/851743 co-relation queries the response was YES. [2023-01-28 09:14:10,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177828 conditions, 18184 events. 9978/18184 cut-off events. For 851743/851743 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 156524 event pairs, 4048 based on Foata normal form. 6/18190 useless extension candidates. Maximal degree in co-relation 177663. Up to 13788 conditions per place. [2023-01-28 09:14:11,061 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 855 selfloop transitions, 269 changer transitions 6/1130 dead transitions. [2023-01-28 09:14:11,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1130 transitions, 44754 flow [2023-01-28 09:14:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:14:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:14:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 09:14:11,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 09:14:11,064 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 09:14:11,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 09:14:11,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:14:11,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 09:14:11,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:11,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:11,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:11,069 INFO L175 Difference]: Start difference. First operand has 496 places, 1082 transitions, 42184 flow. Second operand 7 states and 2001 transitions. [2023-01-28 09:14:11,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1130 transitions, 44754 flow [2023-01-28 09:14:21,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 1130 transitions, 44593 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-28 09:14:21,735 INFO L231 Difference]: Finished difference. Result has 500 places, 1080 transitions, 42504 flow [2023-01-28 09:14:21,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41999, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42504, PETRI_PLACES=500, PETRI_TRANSITIONS=1080} [2023-01-28 09:14:21,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 470 predicate places. [2023-01-28 09:14:21,736 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 1080 transitions, 42504 flow [2023-01-28 09:14:21,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:21,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:14:21,736 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:14:21,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2023-01-28 09:14:21,737 INFO L420 AbstractCegarLoop]: === Iteration 108 === 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 09:14:21,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:14:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1480506524, now seen corresponding path program 50 times [2023-01-28 09:14:21,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:14:21,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841675524] [2023-01-28 09:14:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:14:21,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:14:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:14:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:14:22,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:14:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841675524] [2023-01-28 09:14:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841675524] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:14:22,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:14:22,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:14:22,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107816113] [2023-01-28 09:14:22,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:14:22,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:14:22,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:14:22,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:14:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:14:22,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 09:14:22,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1080 transitions, 42504 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:22,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:14:22,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 09:14:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:14:30,195 INFO L130 PetriNetUnfolder]: 9945/18117 cut-off events. [2023-01-28 09:14:30,195 INFO L131 PetriNetUnfolder]: For 851810/851810 co-relation queries the response was YES. [2023-01-28 09:14:30,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178149 conditions, 18117 events. 9945/18117 cut-off events. For 851810/851810 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 155712 event pairs, 4034 based on Foata normal form. 12/18129 useless extension candidates. Maximal degree in co-relation 177983. Up to 13788 conditions per place. [2023-01-28 09:14:30,421 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 857 selfloop transitions, 268 changer transitions 1/1126 dead transitions. [2023-01-28 09:14:30,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1126 transitions, 45039 flow [2023-01-28 09:14:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:14:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:14:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 09:14:30,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 09:14:30,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 09:14:30,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 09:14:30,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:14:30,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 09:14:30,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:30,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:30,427 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:30,427 INFO L175 Difference]: Start difference. First operand has 500 places, 1080 transitions, 42504 flow. Second operand 7 states and 2000 transitions. [2023-01-28 09:14:30,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1126 transitions, 45039 flow [2023-01-28 09:14:37,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1126 transitions, 44501 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-01-28 09:14:37,715 INFO L231 Difference]: Finished difference. Result has 501 places, 1078 transitions, 42418 flow [2023-01-28 09:14:37,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=41920, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42418, PETRI_PLACES=501, PETRI_TRANSITIONS=1078} [2023-01-28 09:14:37,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 471 predicate places. [2023-01-28 09:14:37,716 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 1078 transitions, 42418 flow [2023-01-28 09:14:37,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:14:37,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:14:37,716 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:14:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2023-01-28 09:14:37,716 INFO L420 AbstractCegarLoop]: === Iteration 109 === 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 09:14:37,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:14:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash -338830146, now seen corresponding path program 51 times [2023-01-28 09:14:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:14:37,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788221523] [2023-01-28 09:14:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:14:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:14:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:14:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:14:38,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:14:38,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788221523] [2023-01-28 09:14:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788221523] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:14:38,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444566936] [2023-01-28 09:14:38,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:14:38,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:14:38,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:14:38,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:14:38,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-01-28 09:14:38,150 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 09:14:38,161 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:14:38,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 09:14:38,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:14:38,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 09:14:38,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:14:38,265 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:14:38,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 09:14:38,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:14:38,466 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. [2023-01-28 09:14:38,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:14:38,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:14:38,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:14:38,468 INFO L445 BasicCegarLoop]: Path program histogram: [51, 48, 9, 1] [2023-01-28 09:14:38,470 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:14:38,470 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:14:38,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:14:38 BasicIcfg [2023-01-28 09:14:38,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:14:38,472 INFO L158 Benchmark]: Toolchain (without parser) took 814360.32ms. Allocated memory was 427.8MB in the beginning and 12.8GB in the end (delta: 12.4GB). Free memory was 367.3MB in the beginning and 8.9GB in the end (delta: -8.5GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-01-28 09:14:38,472 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 427.8MB. Free memory was 377.4MB in the beginning and 377.2MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:14:38,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.18ms. Allocated memory is still 427.8MB. Free memory was 367.0MB in the beginning and 354.0MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 09:14:38,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.55ms. Allocated memory is still 427.8MB. Free memory was 354.0MB in the beginning and 351.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:14:38,473 INFO L158 Benchmark]: Boogie Preprocessor took 29.48ms. Allocated memory is still 427.8MB. Free memory was 351.4MB in the beginning and 349.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:14:38,473 INFO L158 Benchmark]: RCFGBuilder took 662.53ms. Allocated memory was 427.8MB in the beginning and 687.9MB in the end (delta: 260.0MB). Free memory was 349.3MB in the beginning and 635.5MB in the end (delta: -286.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.0GB. [2023-01-28 09:14:38,473 INFO L158 Benchmark]: TraceAbstraction took 813422.50ms. Allocated memory was 687.9MB in the beginning and 12.8GB in the end (delta: 12.1GB). Free memory was 634.6MB in the beginning and 8.9GB in the end (delta: -8.3GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-01-28 09:14:38,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 427.8MB. Free memory was 377.4MB in the beginning and 377.2MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 209.18ms. Allocated memory is still 427.8MB. Free memory was 367.0MB in the beginning and 354.0MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.55ms. Allocated memory is still 427.8MB. Free memory was 354.0MB in the beginning and 351.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.48ms. Allocated memory is still 427.8MB. Free memory was 351.4MB in the beginning and 349.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 662.53ms. Allocated memory was 427.8MB in the beginning and 687.9MB in the end (delta: 260.0MB). Free memory was 349.3MB in the beginning and 635.5MB in the end (delta: -286.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.0GB. * TraceAbstraction took 813422.50ms. Allocated memory was 687.9MB in the beginning and 12.8GB in the end (delta: 12.1GB). Free memory was 634.6MB in the beginning and 8.9GB in the end (delta: -8.3GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5s, 331 PlacesBefore, 30 PlacesAfterwards, 347 TransitionsBefore, 24 TransitionsAfterwards, 28350 CoEnabledTransitionPairs, 8 FixpointIterations, 124 TrivialSequentialCompositions, 178 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 73 ConcurrentYvCompositions, 22 ChoiceCompositions, 411 TotalNumberOfCompositions, 26332 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25648, independent: 25626, independent conditional: 0, independent unconditional: 25626, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 17150, independent: 17137, independent conditional: 0, independent unconditional: 17137, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25648, independent: 8489, independent conditional: 0, independent unconditional: 8489, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 17150, unknown conditional: 0, unknown unconditional: 17150] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 509 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: 813.3s, OverallIterations: 109, TraceHistogramMax: 3, PathProgramHistogramMax: 51, EmptinessCheckTime: 0.0s, AutomataDifference: 770.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6263 SdHoareTripleChecker+Valid, 16.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6263 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25869 IncrementalHoareTripleChecker+Invalid, 26042 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 0 mSDtfsCounter, 25869 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1500 GetRequests, 660 SyntacticMatches, 1 SemanticMatches, 839 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42557occurred in iteration=104, InterpolantAutomatonStates: 768, 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: 0.3s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 28.1s InterpolantComputationTime, 2694 NumberOfCodeBlocks, 2694 NumberOfCodeBlocksAsserted, 120 NumberOfCheckSat, 2693 ConstructedInterpolants, 0 QuantifiedInterpolants, 17689 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1258 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 118 InterpolantComputations, 106 PerfectInterpolantSequences, 781/793 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