/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-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:16:47,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:16:47,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:16:47,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:16:47,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:16:47,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:16:47,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:16:47,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:16:47,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:16:47,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:16:47,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:16:47,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:16:47,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:16:47,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:16:47,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:16:47,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:16:47,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:16:47,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:16:47,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:16:47,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:16:47,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:16:47,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:16:47,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:16:47,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:16:47,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:16:47,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:16:47,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:16:47,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:16:47,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:16:47,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:16:47,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:16:47,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:16:47,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:16:47,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:16:47,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:16:47,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:16:47,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:16:47,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:16:47,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:16:47,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:16:47,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:16:47,488 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-NoLbe-Before.epf [2022-01-19 07:16:47,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:16:47,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:16:47,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:16:47,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:16:47,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:16:47,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:16:47,512 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:16:47,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:16:47,513 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:16:47,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:16:47,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:16:47,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:16:47,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:16:47,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:16:47,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:16:47,514 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:16:47,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:16:47,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:16:47,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:16:47,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:16:47,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:16:47,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:16:47,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:16:47,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:16:47,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:16:47,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:16:47,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:16:47,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:16:47,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:16:47,515 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:16:47,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:16:47,515 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:16:47,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:16:47,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:16:47,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:16:47,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:16:47,730 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:16:47,731 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:16:47,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2022-01-19 07:16:47,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33cc5faa8/c8bc65f6ce7a41d7b8ec9531cfdea2ae/FLAGb096854db [2022-01-19 07:16:48,195 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:16:48,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2022-01-19 07:16:48,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33cc5faa8/c8bc65f6ce7a41d7b8ec9531cfdea2ae/FLAGb096854db [2022-01-19 07:16:48,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33cc5faa8/c8bc65f6ce7a41d7b8ec9531cfdea2ae [2022-01-19 07:16:48,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:16:48,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:16:48,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:16:48,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:16:48,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:16:48,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c43fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48, skipping insertion in model container [2022-01-19 07:16:48,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:16:48,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:16:48,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c[2333,2346] [2022-01-19 07:16:48,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:16:48,454 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:16:48,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c[2333,2346] [2022-01-19 07:16:48,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:16:48,479 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:16:48,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48 WrapperNode [2022-01-19 07:16:48,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:16:48,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:16:48,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:16:48,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:16:48,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,505 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-01-19 07:16:48,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:16:48,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:16:48,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:16:48,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:16:48,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:16:48,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:16:48,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:16:48,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:16:48,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (1/1) ... [2022-01-19 07:16:48,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:16:48,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:16:48,560 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) [2022-01-19 07:16:48,570 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 [2022-01-19 07:16:48,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:16:48,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:16:48,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:16:48,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:16:48,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:16:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 07:16:48,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 07:16:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:16:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:16:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:16:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:16:48,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:16:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:16:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:16:48,602 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 07:16:48,661 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:16:48,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:16:48,873 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:16:48,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:16:48,880 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 07:16:48,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:16:48 BoogieIcfgContainer [2022-01-19 07:16:48,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:16:48,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:16:48,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:16:48,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:16:48,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:16:48" (1/3) ... [2022-01-19 07:16:48,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd4a8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:16:48, skipping insertion in model container [2022-01-19 07:16:48,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:16:48" (2/3) ... [2022-01-19 07:16:48,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd4a8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:16:48, skipping insertion in model container [2022-01-19 07:16:48,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:16:48" (3/3) ... [2022-01-19 07:16:48,889 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2022-01-19 07:16:48,893 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:16:48,893 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:16:48,893 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:16:48,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,932 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,932 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,932 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,932 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,933 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,933 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,936 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,936 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,936 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,936 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,936 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,936 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,942 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,942 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,942 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,942 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,943 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,943 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,943 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,944 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:16:48,948 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 07:16:48,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:16:48,990 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 07:16:48,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 07:16:49,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 124 transitions, 272 flow [2022-01-19 07:16:49,048 INFO L129 PetriNetUnfolder]: 8/121 cut-off events. [2022-01-19 07:16:49,048 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:16:49,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 8/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-01-19 07:16:49,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 124 transitions, 272 flow [2022-01-19 07:16:49,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 110 transitions, 238 flow [2022-01-19 07:16:49,080 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2022-01-19 07:16:49,081 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:16:49,081 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:49,081 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:49,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2142705332, now seen corresponding path program 1 times [2022-01-19 07:16:49,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:49,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717381998] [2022-01-19 07:16:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:49,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:49,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:49,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717381998] [2022-01-19 07:16:49,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717381998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:49,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:49,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:16:49,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811111011] [2022-01-19 07:16:49,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:49,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:16:49,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:16:49,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:16:49,557 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2022-01-19 07:16:49,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:49,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:49,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2022-01-19 07:16:49,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:49,902 INFO L129 PetriNetUnfolder]: 133/471 cut-off events. [2022-01-19 07:16:49,902 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-01-19 07:16:49,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 471 events. 133/471 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2364 event pairs, 30 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 615. Up to 68 conditions per place. [2022-01-19 07:16:49,912 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 49 selfloop transitions, 17 changer transitions 16/164 dead transitions. [2022-01-19 07:16:49,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 549 flow [2022-01-19 07:16:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 07:16:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 07:16:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1324 transitions. [2022-01-19 07:16:49,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8213399503722084 [2022-01-19 07:16:49,929 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1324 transitions. [2022-01-19 07:16:49,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1324 transitions. [2022-01-19 07:16:49,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:49,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1324 transitions. [2022-01-19 07:16:49,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.84615384615384) internal successors, (1324), 13 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:49,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:49,957 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:49,958 INFO L186 Difference]: Start difference. First operand has 112 places, 110 transitions, 238 flow. Second operand 13 states and 1324 transitions. [2022-01-19 07:16:49,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 549 flow [2022-01-19 07:16:49,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 164 transitions, 511 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 07:16:49,968 INFO L242 Difference]: Finished difference. Result has 125 places, 120 transitions, 331 flow [2022-01-19 07:16:49,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2022-01-19 07:16:49,974 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2022-01-19 07:16:49,974 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 331 flow [2022-01-19 07:16:49,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:49,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:49,975 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:49,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:16:49,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:49,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1204171975, now seen corresponding path program 1 times [2022-01-19 07:16:49,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:49,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132708491] [2022-01-19 07:16:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:49,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:50,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:50,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132708491] [2022-01-19 07:16:50,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132708491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:50,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:50,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:50,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653009511] [2022-01-19 07:16:50,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:50,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:50,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:50,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:50,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:50,154 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:50,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:50,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:50,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:50,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:50,376 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 62#thread1ENTRYtrue, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 07:16:50,376 INFO L384 tUnfolder$Statistics]: this new event has 51 ancestors and is not cut-off event [2022-01-19 07:16:50,376 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 07:16:50,376 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 07:16:50,376 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 07:16:50,387 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 87#L42-2true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 07:16:50,387 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-01-19 07:16:50,387 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 07:16:50,387 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 07:16:50,387 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 07:16:50,390 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 79#L42true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 07:16:50,390 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-01-19 07:16:50,390 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 07:16:50,391 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 07:16:50,391 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 07:16:50,397 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), 82#L42-5true, Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 07:16:50,397 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-01-19 07:16:50,397 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 07:16:50,398 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 07:16:50,398 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 07:16:50,401 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 10#L54-8true, 90#L42-3true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 07:16:50,401 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-01-19 07:16:50,401 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 07:16:50,401 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 07:16:50,401 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 07:16:50,479 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 113#L71-2true, 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), 10#L54-8true]) [2022-01-19 07:16:50,480 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is not cut-off event [2022-01-19 07:16:50,480 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 07:16:50,480 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 07:16:50,480 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 07:16:50,514 INFO L129 PetriNetUnfolder]: 498/2327 cut-off events. [2022-01-19 07:16:50,514 INFO L130 PetriNetUnfolder]: For 486/636 co-relation queries the response was YES. [2022-01-19 07:16:50,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4295 conditions, 2327 events. 498/2327 cut-off events. For 486/636 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21774 event pairs, 123 based on Foata normal form. 36/2071 useless extension candidates. Maximal degree in co-relation 4265. Up to 331 conditions per place. [2022-01-19 07:16:50,534 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 52 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2022-01-19 07:16:50,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 155 transitions, 531 flow [2022-01-19 07:16:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:16:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:16:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2022-01-19 07:16:50,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2022-01-19 07:16:50,537 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2022-01-19 07:16:50,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2022-01-19 07:16:50,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:50,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2022-01-19 07:16:50,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:50,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:50,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:50,541 INFO L186 Difference]: Start difference. First operand has 125 places, 120 transitions, 331 flow. Second operand 5 states and 551 transitions. [2022-01-19 07:16:50,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 155 transitions, 531 flow [2022-01-19 07:16:50,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 155 transitions, 527 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 07:16:50,557 INFO L242 Difference]: Finished difference. Result has 124 places, 127 transitions, 397 flow [2022-01-19 07:16:50,557 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2022-01-19 07:16:50,557 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2022-01-19 07:16:50,558 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 397 flow [2022-01-19 07:16:50,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:50,558 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:50,558 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:50,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:16:50,559 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1498378015, now seen corresponding path program 2 times [2022-01-19 07:16:50,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:50,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991777051] [2022-01-19 07:16:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:50,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:50,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:50,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991777051] [2022-01-19 07:16:50,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991777051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:50,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:50,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:50,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107693559] [2022-01-19 07:16:50,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:50,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:50,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:50,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:50,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:50,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:50,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:50,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:50,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:50,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:51,018 INFO L129 PetriNetUnfolder]: 573/2563 cut-off events. [2022-01-19 07:16:51,019 INFO L130 PetriNetUnfolder]: For 1015/1145 co-relation queries the response was YES. [2022-01-19 07:16:51,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5342 conditions, 2563 events. 573/2563 cut-off events. For 1015/1145 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23934 event pairs, 122 based on Foata normal form. 56/2500 useless extension candidates. Maximal degree in co-relation 4382. Up to 318 conditions per place. [2022-01-19 07:16:51,047 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 61 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2022-01-19 07:16:51,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 178 transitions, 780 flow [2022-01-19 07:16:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:16:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:16:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-01-19 07:16:51,049 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896774193548387 [2022-01-19 07:16:51,049 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-01-19 07:16:51,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-01-19 07:16:51,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:51,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-01-19 07:16:51,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,053 INFO L186 Difference]: Start difference. First operand has 124 places, 127 transitions, 397 flow. Second operand 5 states and 556 transitions. [2022-01-19 07:16:51,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 178 transitions, 780 flow [2022-01-19 07:16:51,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 178 transitions, 780 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:51,074 INFO L242 Difference]: Finished difference. Result has 132 places, 145 transitions, 605 flow [2022-01-19 07:16:51,075 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=605, PETRI_PLACES=132, PETRI_TRANSITIONS=145} [2022-01-19 07:16:51,077 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 20 predicate places. [2022-01-19 07:16:51,077 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 145 transitions, 605 flow [2022-01-19 07:16:51,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,077 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:51,077 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:51,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:16:51,078 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash -613223827, now seen corresponding path program 1 times [2022-01-19 07:16:51,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:51,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111960194] [2022-01-19 07:16:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:51,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:51,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:51,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111960194] [2022-01-19 07:16:51,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111960194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:51,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:51,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:51,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259297590] [2022-01-19 07:16:51,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:51,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:51,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:51,291 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:51,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 145 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:51,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:51,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:51,783 INFO L129 PetriNetUnfolder]: 687/3225 cut-off events. [2022-01-19 07:16:51,784 INFO L130 PetriNetUnfolder]: For 3036/3173 co-relation queries the response was YES. [2022-01-19 07:16:51,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 3225 events. 687/3225 cut-off events. For 3036/3173 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31981 event pairs, 123 based on Foata normal form. 69/3145 useless extension candidates. Maximal degree in co-relation 6118. Up to 349 conditions per place. [2022-01-19 07:16:51,814 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 111 selfloop transitions, 40 changer transitions 9/252 dead transitions. [2022-01-19 07:16:51,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 252 transitions, 1598 flow [2022-01-19 07:16:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:16:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:16:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-01-19 07:16:51,817 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-01-19 07:16:51,817 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-01-19 07:16:51,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-01-19 07:16:51,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:51,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-01-19 07:16:51,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,821 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,822 INFO L186 Difference]: Start difference. First operand has 132 places, 145 transitions, 605 flow. Second operand 7 states and 772 transitions. [2022-01-19 07:16:51,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 252 transitions, 1598 flow [2022-01-19 07:16:51,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 252 transitions, 1598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:51,840 INFO L242 Difference]: Finished difference. Result has 144 places, 180 transitions, 1093 flow [2022-01-19 07:16:51,840 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1093, PETRI_PLACES=144, PETRI_TRANSITIONS=180} [2022-01-19 07:16:51,841 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 32 predicate places. [2022-01-19 07:16:51,842 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 180 transitions, 1093 flow [2022-01-19 07:16:51,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:51,842 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:51,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:16:51,843 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash -148648603, now seen corresponding path program 1 times [2022-01-19 07:16:51,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:51,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280665529] [2022-01-19 07:16:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:51,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:51,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:51,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280665529] [2022-01-19 07:16:51,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280665529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:51,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:51,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:51,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101875122] [2022-01-19 07:16:51,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:51,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:51,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:51,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:51,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:51,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 180 transitions, 1093 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:51,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:51,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:51,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:52,565 INFO L129 PetriNetUnfolder]: 636/3554 cut-off events. [2022-01-19 07:16:52,565 INFO L130 PetriNetUnfolder]: For 5898/6021 co-relation queries the response was YES. [2022-01-19 07:16:52,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8635 conditions, 3554 events. 636/3554 cut-off events. For 5898/6021 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 36941 event pairs, 125 based on Foata normal form. 72/3466 useless extension candidates. Maximal degree in co-relation 7511. Up to 334 conditions per place. [2022-01-19 07:16:52,595 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 116 selfloop transitions, 65 changer transitions 9/282 dead transitions. [2022-01-19 07:16:52,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 282 transitions, 2376 flow [2022-01-19 07:16:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:16:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:16:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-01-19 07:16:52,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-01-19 07:16:52,598 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-01-19 07:16:52,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-01-19 07:16:52,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:52,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-01-19 07:16:52,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:52,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:52,602 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:52,602 INFO L186 Difference]: Start difference. First operand has 144 places, 180 transitions, 1093 flow. Second operand 7 states and 772 transitions. [2022-01-19 07:16:52,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 282 transitions, 2376 flow [2022-01-19 07:16:52,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 282 transitions, 2368 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-01-19 07:16:52,625 INFO L242 Difference]: Finished difference. Result has 154 places, 220 transitions, 1867 flow [2022-01-19 07:16:52,625 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1867, PETRI_PLACES=154, PETRI_TRANSITIONS=220} [2022-01-19 07:16:52,627 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2022-01-19 07:16:52,627 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 220 transitions, 1867 flow [2022-01-19 07:16:52,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:52,628 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:52,628 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:52,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:16:52,628 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:52,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:52,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1601579601, now seen corresponding path program 3 times [2022-01-19 07:16:52,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103541973] [2022-01-19 07:16:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:52,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:52,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:52,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103541973] [2022-01-19 07:16:52,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103541973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:52,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:52,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:52,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118979614] [2022-01-19 07:16:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:52,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:52,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:52,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:52,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 220 transitions, 1867 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:52,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:52,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:52,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:53,427 INFO L129 PetriNetUnfolder]: 681/4157 cut-off events. [2022-01-19 07:16:53,427 INFO L130 PetriNetUnfolder]: For 8977/9112 co-relation queries the response was YES. [2022-01-19 07:16:53,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10400 conditions, 4157 events. 681/4157 cut-off events. For 8977/9112 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45547 event pairs, 168 based on Foata normal form. 54/4032 useless extension candidates. Maximal degree in co-relation 8936. Up to 429 conditions per place. [2022-01-19 07:16:53,456 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 155 selfloop transitions, 53 changer transitions 7/307 dead transitions. [2022-01-19 07:16:53,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 307 transitions, 3175 flow [2022-01-19 07:16:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:16:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:16:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 07:16:53,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 07:16:53,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 07:16:53,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 07:16:53,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:53,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 07:16:53,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:53,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:53,463 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:53,463 INFO L186 Difference]: Start difference. First operand has 154 places, 220 transitions, 1867 flow. Second operand 7 states and 769 transitions. [2022-01-19 07:16:53,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 307 transitions, 3175 flow [2022-01-19 07:16:53,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 307 transitions, 3141 flow, removed 17 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:53,488 INFO L242 Difference]: Finished difference. Result has 166 places, 242 transitions, 2381 flow [2022-01-19 07:16:53,488 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2381, PETRI_PLACES=166, PETRI_TRANSITIONS=242} [2022-01-19 07:16:53,489 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 54 predicate places. [2022-01-19 07:16:53,489 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 242 transitions, 2381 flow [2022-01-19 07:16:53,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:53,490 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:53,490 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:53,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:16:53,490 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:53,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1952870271, now seen corresponding path program 1 times [2022-01-19 07:16:53,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865645776] [2022-01-19 07:16:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:53,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:53,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:53,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865645776] [2022-01-19 07:16:53,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865645776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:53,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:53,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:53,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219737437] [2022-01-19 07:16:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:53,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:53,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:53,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:53,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:53,628 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:53,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 242 transitions, 2381 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:53,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:53,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:53,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:54,362 INFO L129 PetriNetUnfolder]: 726/4918 cut-off events. [2022-01-19 07:16:54,362 INFO L130 PetriNetUnfolder]: For 12079/12261 co-relation queries the response was YES. [2022-01-19 07:16:54,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12376 conditions, 4918 events. 726/4918 cut-off events. For 12079/12261 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 56456 event pairs, 190 based on Foata normal form. 65/4775 useless extension candidates. Maximal degree in co-relation 10686. Up to 524 conditions per place. [2022-01-19 07:16:54,402 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 164 selfloop transitions, 72 changer transitions 6/334 dead transitions. [2022-01-19 07:16:54,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 334 transitions, 3957 flow [2022-01-19 07:16:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:16:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:16:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 07:16:54,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 07:16:54,405 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 07:16:54,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 07:16:54,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:54,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 07:16:54,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:54,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:54,410 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:54,410 INFO L186 Difference]: Start difference. First operand has 166 places, 242 transitions, 2381 flow. Second operand 7 states and 769 transitions. [2022-01-19 07:16:54,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 334 transitions, 3957 flow [2022-01-19 07:16:54,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 334 transitions, 3947 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:54,461 INFO L242 Difference]: Finished difference. Result has 178 places, 271 transitions, 3195 flow [2022-01-19 07:16:54,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3195, PETRI_PLACES=178, PETRI_TRANSITIONS=271} [2022-01-19 07:16:54,462 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 66 predicate places. [2022-01-19 07:16:54,462 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 271 transitions, 3195 flow [2022-01-19 07:16:54,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:54,463 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:54,463 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:54,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 07:16:54,463 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:54,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:54,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1617352099, now seen corresponding path program 4 times [2022-01-19 07:16:54,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:54,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175823665] [2022-01-19 07:16:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:54,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:54,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:54,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175823665] [2022-01-19 07:16:54,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175823665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:54,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:54,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:54,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619925326] [2022-01-19 07:16:54,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:54,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:54,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:54,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:54,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:54,553 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:54,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 271 transitions, 3195 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:54,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:54,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:54,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:55,207 INFO L129 PetriNetUnfolder]: 706/4745 cut-off events. [2022-01-19 07:16:55,208 INFO L130 PetriNetUnfolder]: For 15772/15950 co-relation queries the response was YES. [2022-01-19 07:16:55,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12741 conditions, 4745 events. 706/4745 cut-off events. For 15772/15950 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 54166 event pairs, 186 based on Foata normal form. 61/4598 useless extension candidates. Maximal degree in co-relation 11065. Up to 512 conditions per place. [2022-01-19 07:16:55,242 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 145 selfloop transitions, 67 changer transitions 16/320 dead transitions. [2022-01-19 07:16:55,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 320 transitions, 4223 flow [2022-01-19 07:16:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:16:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:16:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-01-19 07:16:55,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-01-19 07:16:55,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-01-19 07:16:55,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-01-19 07:16:55,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:55,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-01-19 07:16:55,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:55,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:55,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:55,247 INFO L186 Difference]: Start difference. First operand has 178 places, 271 transitions, 3195 flow. Second operand 5 states and 555 transitions. [2022-01-19 07:16:55,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 320 transitions, 4223 flow [2022-01-19 07:16:55,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 320 transitions, 4203 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:55,310 INFO L242 Difference]: Finished difference. Result has 185 places, 277 transitions, 3569 flow [2022-01-19 07:16:55,310 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3569, PETRI_PLACES=185, PETRI_TRANSITIONS=277} [2022-01-19 07:16:55,311 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 73 predicate places. [2022-01-19 07:16:55,311 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 277 transitions, 3569 flow [2022-01-19 07:16:55,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:55,311 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:55,311 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:55,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 07:16:55,312 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1485326517, now seen corresponding path program 2 times [2022-01-19 07:16:55,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:55,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762076142] [2022-01-19 07:16:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:55,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:55,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:55,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762076142] [2022-01-19 07:16:55,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762076142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:55,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:55,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:55,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859751206] [2022-01-19 07:16:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:55,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:55,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:55,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:55,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:55,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:55,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 277 transitions, 3569 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:55,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:55,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:55,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:55,947 INFO L129 PetriNetUnfolder]: 661/4490 cut-off events. [2022-01-19 07:16:55,948 INFO L130 PetriNetUnfolder]: For 18051/18207 co-relation queries the response was YES. [2022-01-19 07:16:55,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12338 conditions, 4490 events. 661/4490 cut-off events. For 18051/18207 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50698 event pairs, 165 based on Foata normal form. 62/4359 useless extension candidates. Maximal degree in co-relation 10657. Up to 478 conditions per place. [2022-01-19 07:16:55,994 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 163 selfloop transitions, 51 changer transitions 14/320 dead transitions. [2022-01-19 07:16:55,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 320 transitions, 4418 flow [2022-01-19 07:16:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:16:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:16:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-01-19 07:16:55,996 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-01-19 07:16:55,996 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-01-19 07:16:55,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-01-19 07:16:55,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:55,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-01-19 07:16:55,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:55,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:56,000 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:56,000 INFO L186 Difference]: Start difference. First operand has 185 places, 277 transitions, 3569 flow. Second operand 5 states and 555 transitions. [2022-01-19 07:16:56,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 320 transitions, 4418 flow [2022-01-19 07:16:56,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 320 transitions, 4395 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 07:16:56,078 INFO L242 Difference]: Finished difference. Result has 191 places, 278 transitions, 3710 flow [2022-01-19 07:16:56,078 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3710, PETRI_PLACES=191, PETRI_TRANSITIONS=278} [2022-01-19 07:16:56,079 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 79 predicate places. [2022-01-19 07:16:56,079 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 278 transitions, 3710 flow [2022-01-19 07:16:56,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:56,079 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:56,079 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:56,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 07:16:56,080 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1641429269, now seen corresponding path program 2 times [2022-01-19 07:16:56,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:56,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963621728] [2022-01-19 07:16:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:56,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:56,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:56,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963621728] [2022-01-19 07:16:56,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963621728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:56,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:56,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:56,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734217009] [2022-01-19 07:16:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:56,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:56,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:56,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:56,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 278 transitions, 3710 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:56,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:56,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:56,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:56,783 INFO L129 PetriNetUnfolder]: 726/4767 cut-off events. [2022-01-19 07:16:56,783 INFO L130 PetriNetUnfolder]: For 21113/21279 co-relation queries the response was YES. [2022-01-19 07:16:56,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13801 conditions, 4767 events. 726/4767 cut-off events. For 21113/21279 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 54200 event pairs, 189 based on Foata normal form. 43/4594 useless extension candidates. Maximal degree in co-relation 11975. Up to 523 conditions per place. [2022-01-19 07:16:56,828 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 158 selfloop transitions, 104 changer transitions 5/359 dead transitions. [2022-01-19 07:16:56,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 359 transitions, 5455 flow [2022-01-19 07:16:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:16:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:16:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 07:16:56,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 07:16:56,830 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 07:16:56,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 07:16:56,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:56,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 07:16:56,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:56,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:56,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:56,834 INFO L186 Difference]: Start difference. First operand has 191 places, 278 transitions, 3710 flow. Second operand 7 states and 769 transitions. [2022-01-19 07:16:56,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 359 transitions, 5455 flow [2022-01-19 07:16:56,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 359 transitions, 5453 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:56,926 INFO L242 Difference]: Finished difference. Result has 202 places, 311 transitions, 4852 flow [2022-01-19 07:16:56,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4852, PETRI_PLACES=202, PETRI_TRANSITIONS=311} [2022-01-19 07:16:56,927 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 90 predicate places. [2022-01-19 07:16:56,927 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 311 transitions, 4852 flow [2022-01-19 07:16:56,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:56,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:56,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:56,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 07:16:56,928 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash -519905703, now seen corresponding path program 2 times [2022-01-19 07:16:56,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:56,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23616492] [2022-01-19 07:16:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:56,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:57,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:57,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23616492] [2022-01-19 07:16:57,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23616492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:57,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:57,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:57,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944991591] [2022-01-19 07:16:57,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:57,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:57,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:57,003 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:57,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 311 transitions, 4852 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:57,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:57,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:57,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:57,730 INFO L129 PetriNetUnfolder]: 718/4919 cut-off events. [2022-01-19 07:16:57,731 INFO L130 PetriNetUnfolder]: For 25639/25816 co-relation queries the response was YES. [2022-01-19 07:16:57,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14454 conditions, 4919 events. 718/4919 cut-off events. For 25639/25816 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 56844 event pairs, 214 based on Foata normal form. 48/4746 useless extension candidates. Maximal degree in co-relation 12434. Up to 532 conditions per place. [2022-01-19 07:16:57,779 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 188 selfloop transitions, 75 changer transitions 6/361 dead transitions. [2022-01-19 07:16:57,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 361 transitions, 5912 flow [2022-01-19 07:16:57,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:16:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:16:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2022-01-19 07:16:57,782 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-01-19 07:16:57,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2022-01-19 07:16:57,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2022-01-19 07:16:57,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:57,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2022-01-19 07:16:57,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:57,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:57,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:57,786 INFO L186 Difference]: Start difference. First operand has 202 places, 311 transitions, 4852 flow. Second operand 7 states and 763 transitions. [2022-01-19 07:16:57,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 361 transitions, 5912 flow [2022-01-19 07:16:57,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 361 transitions, 5848 flow, removed 32 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:57,903 INFO L242 Difference]: Finished difference. Result has 211 places, 317 transitions, 5119 flow [2022-01-19 07:16:57,904 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5119, PETRI_PLACES=211, PETRI_TRANSITIONS=317} [2022-01-19 07:16:57,904 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 99 predicate places. [2022-01-19 07:16:57,904 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 317 transitions, 5119 flow [2022-01-19 07:16:57,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:57,904 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:57,905 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:57,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 07:16:57,905 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:57,905 INFO L85 PathProgramCache]: Analyzing trace with hash -878726137, now seen corresponding path program 3 times [2022-01-19 07:16:57,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:57,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331033352] [2022-01-19 07:16:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:57,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:58,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:58,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331033352] [2022-01-19 07:16:58,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331033352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:58,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:58,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:58,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944045601] [2022-01-19 07:16:58,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:58,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:58,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:58,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:58,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 317 transitions, 5119 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:58,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:58,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:58,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:58,757 INFO L129 PetriNetUnfolder]: 717/5058 cut-off events. [2022-01-19 07:16:58,757 INFO L130 PetriNetUnfolder]: For 26915/27078 co-relation queries the response was YES. [2022-01-19 07:16:58,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14919 conditions, 5058 events. 717/5058 cut-off events. For 26915/27078 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 59286 event pairs, 206 based on Foata normal form. 45/4886 useless extension candidates. Maximal degree in co-relation 12959. Up to 506 conditions per place. [2022-01-19 07:16:58,801 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 196 selfloop transitions, 86 changer transitions 9/383 dead transitions. [2022-01-19 07:16:58,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 383 transitions, 6537 flow [2022-01-19 07:16:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:16:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:16:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-01-19 07:16:58,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8847926267281107 [2022-01-19 07:16:58,804 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-01-19 07:16:58,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-01-19 07:16:58,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:58,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-01-19 07:16:58,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:58,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:58,808 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:58,808 INFO L186 Difference]: Start difference. First operand has 211 places, 317 transitions, 5119 flow. Second operand 7 states and 768 transitions. [2022-01-19 07:16:58,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 383 transitions, 6537 flow [2022-01-19 07:16:58,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 383 transitions, 6531 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:58,911 INFO L242 Difference]: Finished difference. Result has 221 places, 333 transitions, 5675 flow [2022-01-19 07:16:58,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5675, PETRI_PLACES=221, PETRI_TRANSITIONS=333} [2022-01-19 07:16:58,912 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 109 predicate places. [2022-01-19 07:16:58,912 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 333 transitions, 5675 flow [2022-01-19 07:16:58,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:58,912 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:58,912 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:58,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 07:16:58,912 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1431994733, now seen corresponding path program 4 times [2022-01-19 07:16:58,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:58,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960676220] [2022-01-19 07:16:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:58,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:58,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:58,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960676220] [2022-01-19 07:16:58,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960676220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:58,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:58,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:58,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197587528] [2022-01-19 07:16:58,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:58,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:58,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:58,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:58,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 333 transitions, 5675 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:58,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:58,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:58,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:59,726 INFO L129 PetriNetUnfolder]: 730/5408 cut-off events. [2022-01-19 07:16:59,726 INFO L130 PetriNetUnfolder]: For 29357/29536 co-relation queries the response was YES. [2022-01-19 07:16:59,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15871 conditions, 5408 events. 730/5408 cut-off events. For 29357/29536 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 64206 event pairs, 196 based on Foata normal form. 58/5226 useless extension candidates. Maximal degree in co-relation 13778. Up to 581 conditions per place. [2022-01-19 07:16:59,771 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 197 selfloop transitions, 75 changer transitions 2/366 dead transitions. [2022-01-19 07:16:59,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 366 transitions, 6647 flow [2022-01-19 07:16:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:16:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:16:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2022-01-19 07:16:59,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2022-01-19 07:16:59,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2022-01-19 07:16:59,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2022-01-19 07:16:59,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:59,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2022-01-19 07:16:59,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:59,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:59,777 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:59,777 INFO L186 Difference]: Start difference. First operand has 221 places, 333 transitions, 5675 flow. Second operand 5 states and 547 transitions. [2022-01-19 07:16:59,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 366 transitions, 6647 flow [2022-01-19 07:16:59,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 366 transitions, 6603 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-01-19 07:16:59,913 INFO L242 Difference]: Finished difference. Result has 229 places, 341 transitions, 6124 flow [2022-01-19 07:16:59,913 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5633, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6124, PETRI_PLACES=229, PETRI_TRANSITIONS=341} [2022-01-19 07:16:59,913 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 117 predicate places. [2022-01-19 07:16:59,914 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 341 transitions, 6124 flow [2022-01-19 07:16:59,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:59,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:59,914 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:59,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 07:16:59,914 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:16:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1486639325, now seen corresponding path program 5 times [2022-01-19 07:16:59,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:59,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603387557] [2022-01-19 07:16:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:59,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:59,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:59,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603387557] [2022-01-19 07:16:59,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603387557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:59,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:59,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:16:59,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372637983] [2022-01-19 07:16:59,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:59,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:16:59,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:59,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:16:59,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:16:59,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:16:59,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 341 transitions, 6124 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:59,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:59,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:16:59,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:00,682 INFO L129 PetriNetUnfolder]: 707/5270 cut-off events. [2022-01-19 07:17:00,683 INFO L130 PetriNetUnfolder]: For 33397/33542 co-relation queries the response was YES. [2022-01-19 07:17:00,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16024 conditions, 5270 events. 707/5270 cut-off events. For 33397/33542 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 62877 event pairs, 185 based on Foata normal form. 50/5105 useless extension candidates. Maximal degree in co-relation 14056. Up to 556 conditions per place. [2022-01-19 07:17:00,731 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 191 selfloop transitions, 94 changer transitions 6/383 dead transitions. [2022-01-19 07:17:00,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 383 transitions, 7166 flow [2022-01-19 07:17:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:17:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:17:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2022-01-19 07:17:00,733 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778801843317973 [2022-01-19 07:17:00,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2022-01-19 07:17:00,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2022-01-19 07:17:00,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:00,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2022-01-19 07:17:00,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:00,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:00,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:00,737 INFO L186 Difference]: Start difference. First operand has 229 places, 341 transitions, 6124 flow. Second operand 7 states and 762 transitions. [2022-01-19 07:17:00,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 383 transitions, 7166 flow [2022-01-19 07:17:00,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 383 transitions, 7144 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-01-19 07:17:00,860 INFO L242 Difference]: Finished difference. Result has 238 places, 348 transitions, 6590 flow [2022-01-19 07:17:00,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6102, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6590, PETRI_PLACES=238, PETRI_TRANSITIONS=348} [2022-01-19 07:17:00,861 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 126 predicate places. [2022-01-19 07:17:00,861 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 348 transitions, 6590 flow [2022-01-19 07:17:00,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:00,861 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:00,861 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:00,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 07:17:00,862 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:00,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1099339847, now seen corresponding path program 3 times [2022-01-19 07:17:00,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:00,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546514519] [2022-01-19 07:17:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:00,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:00,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:00,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546514519] [2022-01-19 07:17:00,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546514519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:00,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:00,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:17:00,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960289565] [2022-01-19 07:17:00,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:00,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:17:00,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:00,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:17:00,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:17:00,941 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:00,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 348 transitions, 6590 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:00,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:00,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:00,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:01,623 INFO L129 PetriNetUnfolder]: 685/5239 cut-off events. [2022-01-19 07:17:01,623 INFO L130 PetriNetUnfolder]: For 35324/35534 co-relation queries the response was YES. [2022-01-19 07:17:01,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15595 conditions, 5239 events. 685/5239 cut-off events. For 35324/35534 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 62169 event pairs, 217 based on Foata normal form. 74/5074 useless extension candidates. Maximal degree in co-relation 13865. Up to 529 conditions per place. [2022-01-19 07:17:01,661 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 260 selfloop transitions, 41 changer transitions 12/405 dead transitions. [2022-01-19 07:17:01,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 405 transitions, 8268 flow [2022-01-19 07:17:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:17:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:17:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2022-01-19 07:17:01,662 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8931451612903226 [2022-01-19 07:17:01,662 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2022-01-19 07:17:01,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2022-01-19 07:17:01,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:01,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2022-01-19 07:17:01,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:01,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:01,664 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:01,665 INFO L186 Difference]: Start difference. First operand has 238 places, 348 transitions, 6590 flow. Second operand 4 states and 443 transitions. [2022-01-19 07:17:01,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 405 transitions, 8268 flow [2022-01-19 07:17:01,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 405 transitions, 8126 flow, removed 22 selfloop flow, removed 3 redundant places. [2022-01-19 07:17:01,812 INFO L242 Difference]: Finished difference. Result has 241 places, 348 transitions, 6489 flow [2022-01-19 07:17:01,813 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6489, PETRI_PLACES=241, PETRI_TRANSITIONS=348} [2022-01-19 07:17:01,813 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 129 predicate places. [2022-01-19 07:17:01,813 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 348 transitions, 6489 flow [2022-01-19 07:17:01,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:01,813 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:01,813 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:01,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 07:17:01,814 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:01,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:01,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1429608049, now seen corresponding path program 5 times [2022-01-19 07:17:01,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:01,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855985854] [2022-01-19 07:17:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:01,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:01,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:01,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855985854] [2022-01-19 07:17:01,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855985854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:01,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:01,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:01,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276513193] [2022-01-19 07:17:01,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:01,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:01,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:01,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:01,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:01,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 348 transitions, 6489 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:01,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:01,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:01,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:02,538 INFO L129 PetriNetUnfolder]: 685/5344 cut-off events. [2022-01-19 07:17:02,538 INFO L130 PetriNetUnfolder]: For 33347/33515 co-relation queries the response was YES. [2022-01-19 07:17:02,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15768 conditions, 5344 events. 685/5344 cut-off events. For 33347/33515 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 64162 event pairs, 203 based on Foata normal form. 59/5191 useless extension candidates. Maximal degree in co-relation 14091. Up to 588 conditions per place. [2022-01-19 07:17:02,577 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 206 selfloop transitions, 75 changer transitions 1/374 dead transitions. [2022-01-19 07:17:02,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 374 transitions, 7321 flow [2022-01-19 07:17:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 07:17:02,579 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 07:17:02,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 07:17:02,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 07:17:02,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:02,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 07:17:02,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:02,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:02,582 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:02,582 INFO L186 Difference]: Start difference. First operand has 241 places, 348 transitions, 6489 flow. Second operand 5 states and 546 transitions. [2022-01-19 07:17:02,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 374 transitions, 7321 flow [2022-01-19 07:17:02,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 374 transitions, 7295 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:02,714 INFO L242 Difference]: Finished difference. Result has 246 places, 352 transitions, 6739 flow [2022-01-19 07:17:02,714 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6463, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6739, PETRI_PLACES=246, PETRI_TRANSITIONS=352} [2022-01-19 07:17:02,715 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 134 predicate places. [2022-01-19 07:17:02,715 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 352 transitions, 6739 flow [2022-01-19 07:17:02,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:02,715 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:02,715 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:02,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 07:17:02,716 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:02,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash 24432091, now seen corresponding path program 6 times [2022-01-19 07:17:02,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:02,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96764693] [2022-01-19 07:17:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:02,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:02,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:02,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96764693] [2022-01-19 07:17:02,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96764693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:02,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:02,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:02,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805366747] [2022-01-19 07:17:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:02,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:02,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:02,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:02,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:02,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 352 transitions, 6739 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:02,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:02,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:02,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:03,541 INFO L129 PetriNetUnfolder]: 679/5351 cut-off events. [2022-01-19 07:17:03,541 INFO L130 PetriNetUnfolder]: For 35254/35448 co-relation queries the response was YES. [2022-01-19 07:17:03,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15888 conditions, 5351 events. 679/5351 cut-off events. For 35254/35448 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 64362 event pairs, 164 based on Foata normal form. 62/5201 useless extension candidates. Maximal degree in co-relation 14838. Up to 580 conditions per place. [2022-01-19 07:17:03,581 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 197 selfloop transitions, 97 changer transitions 5/391 dead transitions. [2022-01-19 07:17:03,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 391 transitions, 7739 flow [2022-01-19 07:17:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:17:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:17:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2022-01-19 07:17:03,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778801843317973 [2022-01-19 07:17:03,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2022-01-19 07:17:03,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2022-01-19 07:17:03,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:03,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2022-01-19 07:17:03,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:03,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:03,588 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:03,588 INFO L186 Difference]: Start difference. First operand has 246 places, 352 transitions, 6739 flow. Second operand 7 states and 762 transitions. [2022-01-19 07:17:03,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 391 transitions, 7739 flow [2022-01-19 07:17:03,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 391 transitions, 7623 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:03,731 INFO L242 Difference]: Finished difference. Result has 255 places, 356 transitions, 7096 flow [2022-01-19 07:17:03,732 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6595, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7096, PETRI_PLACES=255, PETRI_TRANSITIONS=356} [2022-01-19 07:17:03,732 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 143 predicate places. [2022-01-19 07:17:03,732 INFO L470 AbstractCegarLoop]: Abstraction has has 255 places, 356 transitions, 7096 flow [2022-01-19 07:17:03,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:03,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:03,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:03,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 07:17:03,733 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:03,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -311761247, now seen corresponding path program 6 times [2022-01-19 07:17:03,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:03,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597595572] [2022-01-19 07:17:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:03,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:03,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:03,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597595572] [2022-01-19 07:17:03,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597595572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:03,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:03,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:03,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515570454] [2022-01-19 07:17:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:03,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:03,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:03,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:03,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 356 transitions, 7096 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:03,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:03,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:03,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:04,530 INFO L129 PetriNetUnfolder]: 648/5036 cut-off events. [2022-01-19 07:17:04,530 INFO L130 PetriNetUnfolder]: For 35835/36012 co-relation queries the response was YES. [2022-01-19 07:17:04,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15537 conditions, 5036 events. 648/5036 cut-off events. For 35835/36012 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 59419 event pairs, 148 based on Foata normal form. 58/4880 useless extension candidates. Maximal degree in co-relation 14602. Up to 539 conditions per place. [2022-01-19 07:17:04,579 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 197 selfloop transitions, 84 changer transitions 4/377 dead transitions. [2022-01-19 07:17:04,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 377 transitions, 7686 flow [2022-01-19 07:17:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:17:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:17:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2022-01-19 07:17:04,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8884408602150538 [2022-01-19 07:17:04,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2022-01-19 07:17:04,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2022-01-19 07:17:04,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:04,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2022-01-19 07:17:04,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:04,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:04,583 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:04,583 INFO L186 Difference]: Start difference. First operand has 255 places, 356 transitions, 7096 flow. Second operand 6 states and 661 transitions. [2022-01-19 07:17:04,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 377 transitions, 7686 flow [2022-01-19 07:17:04,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 377 transitions, 7566 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-01-19 07:17:04,733 INFO L242 Difference]: Finished difference. Result has 257 places, 348 transitions, 6886 flow [2022-01-19 07:17:04,733 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6746, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6886, PETRI_PLACES=257, PETRI_TRANSITIONS=348} [2022-01-19 07:17:04,733 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 145 predicate places. [2022-01-19 07:17:04,733 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 348 transitions, 6886 flow [2022-01-19 07:17:04,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:04,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:04,734 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:04,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 07:17:04,734 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash -787788849, now seen corresponding path program 7 times [2022-01-19 07:17:04,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:04,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733781495] [2022-01-19 07:17:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:04,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:04,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:04,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733781495] [2022-01-19 07:17:04,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733781495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:04,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:04,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:04,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900229309] [2022-01-19 07:17:04,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:04,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:04,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:04,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:04,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:04,806 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:04,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 348 transitions, 6886 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:04,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:04,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:04,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:05,402 INFO L129 PetriNetUnfolder]: 612/4777 cut-off events. [2022-01-19 07:17:05,402 INFO L130 PetriNetUnfolder]: For 33927/34094 co-relation queries the response was YES. [2022-01-19 07:17:05,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15017 conditions, 4777 events. 612/4777 cut-off events. For 33927/34094 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 55942 event pairs, 146 based on Foata normal form. 54/4628 useless extension candidates. Maximal degree in co-relation 14081. Up to 485 conditions per place. [2022-01-19 07:17:05,444 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 211 selfloop transitions, 64 changer transitions 1/368 dead transitions. [2022-01-19 07:17:05,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 368 transitions, 7579 flow [2022-01-19 07:17:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2022-01-19 07:17:05,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8774193548387097 [2022-01-19 07:17:05,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2022-01-19 07:17:05,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2022-01-19 07:17:05,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:05,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2022-01-19 07:17:05,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:05,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:05,448 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:05,448 INFO L186 Difference]: Start difference. First operand has 257 places, 348 transitions, 6886 flow. Second operand 5 states and 544 transitions. [2022-01-19 07:17:05,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 368 transitions, 7579 flow [2022-01-19 07:17:05,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 368 transitions, 7400 flow, removed 29 selfloop flow, removed 5 redundant places. [2022-01-19 07:17:05,579 INFO L242 Difference]: Finished difference. Result has 257 places, 346 transitions, 6805 flow [2022-01-19 07:17:05,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6639, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6805, PETRI_PLACES=257, PETRI_TRANSITIONS=346} [2022-01-19 07:17:05,579 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 145 predicate places. [2022-01-19 07:17:05,579 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 346 transitions, 6805 flow [2022-01-19 07:17:05,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:05,580 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:05,580 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:05,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 07:17:05,580 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 745881139, now seen corresponding path program 8 times [2022-01-19 07:17:05,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:05,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108394465] [2022-01-19 07:17:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:05,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:05,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:05,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108394465] [2022-01-19 07:17:05,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108394465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:05,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:05,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:05,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081821177] [2022-01-19 07:17:05,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:05,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:05,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:05,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:05,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:05,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:05,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 346 transitions, 6805 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:05,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:05,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:05,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:06,270 INFO L129 PetriNetUnfolder]: 648/5035 cut-off events. [2022-01-19 07:17:06,270 INFO L130 PetriNetUnfolder]: For 35410/35593 co-relation queries the response was YES. [2022-01-19 07:17:06,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15872 conditions, 5035 events. 648/5035 cut-off events. For 35410/35593 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 59718 event pairs, 164 based on Foata normal form. 54/4871 useless extension candidates. Maximal degree in co-relation 14947. Up to 510 conditions per place. [2022-01-19 07:17:06,316 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 206 selfloop transitions, 87 changer transitions 0/385 dead transitions. [2022-01-19 07:17:06,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 385 transitions, 8111 flow [2022-01-19 07:17:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 07:17:06,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 07:17:06,317 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 07:17:06,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 07:17:06,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:06,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 07:17:06,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:06,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:06,319 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:06,319 INFO L186 Difference]: Start difference. First operand has 257 places, 346 transitions, 6805 flow. Second operand 5 states and 548 transitions. [2022-01-19 07:17:06,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 385 transitions, 8111 flow [2022-01-19 07:17:06,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 385 transitions, 7976 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-01-19 07:17:06,472 INFO L242 Difference]: Finished difference. Result has 261 places, 361 transitions, 7423 flow [2022-01-19 07:17:06,472 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7423, PETRI_PLACES=261, PETRI_TRANSITIONS=361} [2022-01-19 07:17:06,473 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 149 predicate places. [2022-01-19 07:17:06,473 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 361 transitions, 7423 flow [2022-01-19 07:17:06,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:06,473 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:06,473 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:06,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 07:17:06,473 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1821057965, now seen corresponding path program 9 times [2022-01-19 07:17:06,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:06,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769168948] [2022-01-19 07:17:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:06,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:06,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:06,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769168948] [2022-01-19 07:17:06,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769168948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:06,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:06,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:06,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638421703] [2022-01-19 07:17:06,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:06,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:06,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:06,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:06,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:06,550 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:06,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 361 transitions, 7423 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:06,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:06,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:06,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:07,211 INFO L129 PetriNetUnfolder]: 660/5128 cut-off events. [2022-01-19 07:17:07,212 INFO L130 PetriNetUnfolder]: For 40522/40710 co-relation queries the response was YES. [2022-01-19 07:17:07,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16151 conditions, 5128 events. 660/5128 cut-off events. For 40522/40710 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 61162 event pairs, 201 based on Foata normal form. 56/4970 useless extension candidates. Maximal degree in co-relation 15232. Up to 524 conditions per place. [2022-01-19 07:17:07,264 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 212 selfloop transitions, 78 changer transitions 0/382 dead transitions. [2022-01-19 07:17:07,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 382 transitions, 8222 flow [2022-01-19 07:17:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2022-01-19 07:17:07,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-01-19 07:17:07,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2022-01-19 07:17:07,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2022-01-19 07:17:07,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:07,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2022-01-19 07:17:07,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:07,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:07,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:07,267 INFO L186 Difference]: Start difference. First operand has 261 places, 361 transitions, 7423 flow. Second operand 5 states and 545 transitions. [2022-01-19 07:17:07,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 382 transitions, 8222 flow [2022-01-19 07:17:07,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 382 transitions, 8164 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:07,413 INFO L242 Difference]: Finished difference. Result has 265 places, 363 transitions, 7635 flow [2022-01-19 07:17:07,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7289, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7635, PETRI_PLACES=265, PETRI_TRANSITIONS=363} [2022-01-19 07:17:07,414 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 153 predicate places. [2022-01-19 07:17:07,414 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 363 transitions, 7635 flow [2022-01-19 07:17:07,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:07,415 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:07,415 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:07,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 07:17:07,415 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash -611779683, now seen corresponding path program 7 times [2022-01-19 07:17:07,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:07,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683133983] [2022-01-19 07:17:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:07,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:07,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:07,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683133983] [2022-01-19 07:17:07,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683133983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:07,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:07,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:07,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021906329] [2022-01-19 07:17:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:07,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:07,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:07,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:07,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:07,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:07,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 363 transitions, 7635 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:07,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:07,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:07,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:08,249 INFO L129 PetriNetUnfolder]: 714/5464 cut-off events. [2022-01-19 07:17:08,249 INFO L130 PetriNetUnfolder]: For 43137/43348 co-relation queries the response was YES. [2022-01-19 07:17:08,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17146 conditions, 5464 events. 714/5464 cut-off events. For 43137/43348 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 65767 event pairs, 191 based on Foata normal form. 68/5318 useless extension candidates. Maximal degree in co-relation 16042. Up to 593 conditions per place. [2022-01-19 07:17:08,288 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 207 selfloop transitions, 83 changer transitions 7/389 dead transitions. [2022-01-19 07:17:08,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 389 transitions, 8607 flow [2022-01-19 07:17:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 07:17:08,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 07:17:08,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 07:17:08,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 07:17:08,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:08,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 07:17:08,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:08,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:08,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:08,291 INFO L186 Difference]: Start difference. First operand has 265 places, 363 transitions, 7635 flow. Second operand 5 states and 548 transitions. [2022-01-19 07:17:08,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 389 transitions, 8607 flow [2022-01-19 07:17:08,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 389 transitions, 8506 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:08,443 INFO L242 Difference]: Finished difference. Result has 270 places, 365 transitions, 7874 flow [2022-01-19 07:17:08,443 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7492, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7874, PETRI_PLACES=270, PETRI_TRANSITIONS=365} [2022-01-19 07:17:08,443 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 158 predicate places. [2022-01-19 07:17:08,443 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 365 transitions, 7874 flow [2022-01-19 07:17:08,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:08,443 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:08,444 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:08,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 07:17:08,444 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1746066995, now seen corresponding path program 8 times [2022-01-19 07:17:08,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:08,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293990306] [2022-01-19 07:17:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:08,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:08,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:08,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293990306] [2022-01-19 07:17:08,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293990306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:08,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:08,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:08,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806629789] [2022-01-19 07:17:08,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:08,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:08,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:08,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:08,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 365 transitions, 7874 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:08,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:08,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:08,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:09,172 INFO L129 PetriNetUnfolder]: 677/5138 cut-off events. [2022-01-19 07:17:09,173 INFO L130 PetriNetUnfolder]: For 42257/42448 co-relation queries the response was YES. [2022-01-19 07:17:09,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16655 conditions, 5138 events. 677/5138 cut-off events. For 42257/42448 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 61082 event pairs, 181 based on Foata normal form. 54/4961 useless extension candidates. Maximal degree in co-relation 15533. Up to 531 conditions per place. [2022-01-19 07:17:09,224 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 208 selfloop transitions, 81 changer transitions 1/382 dead transitions. [2022-01-19 07:17:09,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 382 transitions, 8554 flow [2022-01-19 07:17:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 07:17:09,225 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 07:17:09,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 07:17:09,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 07:17:09,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:09,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 07:17:09,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:09,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:09,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:09,226 INFO L186 Difference]: Start difference. First operand has 270 places, 365 transitions, 7874 flow. Second operand 5 states and 548 transitions. [2022-01-19 07:17:09,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 382 transitions, 8554 flow [2022-01-19 07:17:09,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 382 transitions, 8515 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:09,405 INFO L242 Difference]: Finished difference. Result has 273 places, 363 transitions, 7910 flow [2022-01-19 07:17:09,405 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7792, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7910, PETRI_PLACES=273, PETRI_TRANSITIONS=363} [2022-01-19 07:17:09,405 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 161 predicate places. [2022-01-19 07:17:09,406 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 363 transitions, 7910 flow [2022-01-19 07:17:09,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:09,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:09,406 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:09,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 07:17:09,406 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:09,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:09,407 INFO L85 PathProgramCache]: Analyzing trace with hash -151886183, now seen corresponding path program 3 times [2022-01-19 07:17:09,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:09,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322631162] [2022-01-19 07:17:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:09,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:09,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:09,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322631162] [2022-01-19 07:17:09,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322631162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:09,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:09,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:09,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211185922] [2022-01-19 07:17:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:09,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:09,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:09,521 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:09,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 363 transitions, 7910 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:09,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:09,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:09,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:10,273 INFO L129 PetriNetUnfolder]: 724/5576 cut-off events. [2022-01-19 07:17:10,273 INFO L130 PetriNetUnfolder]: For 43940/44154 co-relation queries the response was YES. [2022-01-19 07:17:10,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17948 conditions, 5576 events. 724/5576 cut-off events. For 43940/44154 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 67317 event pairs, 188 based on Foata normal form. 62/5413 useless extension candidates. Maximal degree in co-relation 16811. Up to 596 conditions per place. [2022-01-19 07:17:10,331 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 229 selfloop transitions, 84 changer transitions 3/408 dead transitions. [2022-01-19 07:17:10,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 408 transitions, 9297 flow [2022-01-19 07:17:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:17:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:17:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 657 transitions. [2022-01-19 07:17:10,332 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8830645161290323 [2022-01-19 07:17:10,332 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 657 transitions. [2022-01-19 07:17:10,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 657 transitions. [2022-01-19 07:17:10,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:10,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 657 transitions. [2022-01-19 07:17:10,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:10,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:10,335 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:10,335 INFO L186 Difference]: Start difference. First operand has 273 places, 363 transitions, 7910 flow. Second operand 6 states and 657 transitions. [2022-01-19 07:17:10,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 408 transitions, 9297 flow [2022-01-19 07:17:10,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 408 transitions, 9147 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-01-19 07:17:10,554 INFO L242 Difference]: Finished difference. Result has 279 places, 378 transitions, 8454 flow [2022-01-19 07:17:10,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7768, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8454, PETRI_PLACES=279, PETRI_TRANSITIONS=378} [2022-01-19 07:17:10,554 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 167 predicate places. [2022-01-19 07:17:10,555 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 378 transitions, 8454 flow [2022-01-19 07:17:10,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:10,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:10,555 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:10,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 07:17:10,555 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1123016729, now seen corresponding path program 4 times [2022-01-19 07:17:10,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:10,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002296521] [2022-01-19 07:17:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:10,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:10,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:10,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002296521] [2022-01-19 07:17:10,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002296521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:10,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:10,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:10,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726247848] [2022-01-19 07:17:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:10,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:10,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:10,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:10,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:10,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:10,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 378 transitions, 8454 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:10,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:10,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:10,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:11,496 INFO L129 PetriNetUnfolder]: 768/5979 cut-off events. [2022-01-19 07:17:11,496 INFO L130 PetriNetUnfolder]: For 46746/47007 co-relation queries the response was YES. [2022-01-19 07:17:11,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18854 conditions, 5979 events. 768/5979 cut-off events. For 46746/47007 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 73077 event pairs, 206 based on Foata normal form. 72/5809 useless extension candidates. Maximal degree in co-relation 17671. Up to 639 conditions per place. [2022-01-19 07:17:11,545 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 235 selfloop transitions, 89 changer transitions 3/419 dead transitions. [2022-01-19 07:17:11,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 419 transitions, 9735 flow [2022-01-19 07:17:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:17:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:17:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2022-01-19 07:17:11,546 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8844086021505376 [2022-01-19 07:17:11,546 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 658 transitions. [2022-01-19 07:17:11,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 658 transitions. [2022-01-19 07:17:11,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:11,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 658 transitions. [2022-01-19 07:17:11,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:11,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:11,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:11,548 INFO L186 Difference]: Start difference. First operand has 279 places, 378 transitions, 8454 flow. Second operand 6 states and 658 transitions. [2022-01-19 07:17:11,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 419 transitions, 9735 flow [2022-01-19 07:17:11,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 419 transitions, 9671 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:11,766 INFO L242 Difference]: Finished difference. Result has 286 places, 390 transitions, 8964 flow [2022-01-19 07:17:11,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8369, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8964, PETRI_PLACES=286, PETRI_TRANSITIONS=390} [2022-01-19 07:17:11,766 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 174 predicate places. [2022-01-19 07:17:11,766 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 390 transitions, 8964 flow [2022-01-19 07:17:11,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:11,767 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:11,767 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:11,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 07:17:11,767 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:11,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1826253479, now seen corresponding path program 5 times [2022-01-19 07:17:11,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:11,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426662246] [2022-01-19 07:17:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:11,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:11,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:11,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426662246] [2022-01-19 07:17:11,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426662246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:11,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:11,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:11,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771141896] [2022-01-19 07:17:11,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:11,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:11,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:11,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:11,867 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:11,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 390 transitions, 8964 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:11,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:11,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:11,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:12,844 INFO L129 PetriNetUnfolder]: 767/6094 cut-off events. [2022-01-19 07:17:12,844 INFO L130 PetriNetUnfolder]: For 49310/49578 co-relation queries the response was YES. [2022-01-19 07:17:12,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19264 conditions, 6094 events. 767/6094 cut-off events. For 49310/49578 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 75184 event pairs, 249 based on Foata normal form. 71/5911 useless extension candidates. Maximal degree in co-relation 18071. Up to 864 conditions per place. [2022-01-19 07:17:12,896 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 270 selfloop transitions, 44 changer transitions 2/408 dead transitions. [2022-01-19 07:17:12,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 408 transitions, 9763 flow [2022-01-19 07:17:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-01-19 07:17:12,897 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2022-01-19 07:17:12,897 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-01-19 07:17:12,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-01-19 07:17:12,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:12,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-01-19 07:17:12,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:12,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:12,899 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:12,899 INFO L186 Difference]: Start difference. First operand has 286 places, 390 transitions, 8964 flow. Second operand 5 states and 538 transitions. [2022-01-19 07:17:12,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 408 transitions, 9763 flow [2022-01-19 07:17:13,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 408 transitions, 9749 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-01-19 07:17:13,151 INFO L242 Difference]: Finished difference. Result has 291 places, 390 transitions, 9054 flow [2022-01-19 07:17:13,151 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8910, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9054, PETRI_PLACES=291, PETRI_TRANSITIONS=390} [2022-01-19 07:17:13,151 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 179 predicate places. [2022-01-19 07:17:13,152 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 390 transitions, 9054 flow [2022-01-19 07:17:13,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:13,152 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:13,152 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:13,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 07:17:13,152 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash 899180921, now seen corresponding path program 4 times [2022-01-19 07:17:13,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550608228] [2022-01-19 07:17:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:13,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:13,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:13,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550608228] [2022-01-19 07:17:13,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550608228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:13,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:13,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:13,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285112271] [2022-01-19 07:17:13,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:13,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:13,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:13,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:13,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:13,252 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:13,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 390 transitions, 9054 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:13,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:13,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:13,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:14,235 INFO L129 PetriNetUnfolder]: 740/5853 cut-off events. [2022-01-19 07:17:14,235 INFO L130 PetriNetUnfolder]: For 51735/51999 co-relation queries the response was YES. [2022-01-19 07:17:14,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18866 conditions, 5853 events. 740/5853 cut-off events. For 51735/51999 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 71719 event pairs, 225 based on Foata normal form. 69/5669 useless extension candidates. Maximal degree in co-relation 17671. Up to 562 conditions per place. [2022-01-19 07:17:14,299 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 245 selfloop transitions, 70 changer transitions 2/409 dead transitions. [2022-01-19 07:17:14,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 409 transitions, 9882 flow [2022-01-19 07:17:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2022-01-19 07:17:14,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8741935483870967 [2022-01-19 07:17:14,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2022-01-19 07:17:14,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2022-01-19 07:17:14,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:14,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2022-01-19 07:17:14,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:14,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:14,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:14,302 INFO L186 Difference]: Start difference. First operand has 291 places, 390 transitions, 9054 flow. Second operand 5 states and 542 transitions. [2022-01-19 07:17:14,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 409 transitions, 9882 flow [2022-01-19 07:17:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 409 transitions, 9861 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:14,545 INFO L242 Difference]: Finished difference. Result has 295 places, 390 transitions, 9223 flow [2022-01-19 07:17:14,545 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8993, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9223, PETRI_PLACES=295, PETRI_TRANSITIONS=390} [2022-01-19 07:17:14,545 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 183 predicate places. [2022-01-19 07:17:14,546 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 390 transitions, 9223 flow [2022-01-19 07:17:14,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:14,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:14,546 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:14,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 07:17:14,546 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1814977475, now seen corresponding path program 9 times [2022-01-19 07:17:14,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:14,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219440143] [2022-01-19 07:17:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:14,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:14,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:14,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219440143] [2022-01-19 07:17:14,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219440143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:14,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:14,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:14,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525143279] [2022-01-19 07:17:14,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:14,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:14,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:14,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:14,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:14,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:14,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 390 transitions, 9223 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:14,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:14,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:14,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:15,461 INFO L129 PetriNetUnfolder]: 760/6040 cut-off events. [2022-01-19 07:17:15,461 INFO L130 PetriNetUnfolder]: For 54023/54293 co-relation queries the response was YES. [2022-01-19 07:17:15,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 6040 events. 760/6040 cut-off events. For 54023/54293 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 74288 event pairs, 198 based on Foata normal form. 72/5867 useless extension candidates. Maximal degree in co-relation 18233. Up to 627 conditions per place. [2022-01-19 07:17:15,511 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 244 selfloop transitions, 90 changer transitions 6/432 dead transitions. [2022-01-19 07:17:15,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 432 transitions, 10636 flow [2022-01-19 07:17:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:17:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:17:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 660 transitions. [2022-01-19 07:17:15,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-01-19 07:17:15,512 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 660 transitions. [2022-01-19 07:17:15,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 660 transitions. [2022-01-19 07:17:15,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:15,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 660 transitions. [2022-01-19 07:17:15,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:15,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:15,514 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:15,514 INFO L186 Difference]: Start difference. First operand has 295 places, 390 transitions, 9223 flow. Second operand 6 states and 660 transitions. [2022-01-19 07:17:15,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 432 transitions, 10636 flow [2022-01-19 07:17:15,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 432 transitions, 10542 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:15,766 INFO L242 Difference]: Finished difference. Result has 301 places, 403 transitions, 9843 flow [2022-01-19 07:17:15,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9098, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9843, PETRI_PLACES=301, PETRI_TRANSITIONS=403} [2022-01-19 07:17:15,766 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 189 predicate places. [2022-01-19 07:17:15,766 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 403 transitions, 9843 flow [2022-01-19 07:17:15,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:15,767 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:15,767 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:15,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 07:17:15,767 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:15,767 INFO L85 PathProgramCache]: Analyzing trace with hash 216516765, now seen corresponding path program 5 times [2022-01-19 07:17:15,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:15,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365894912] [2022-01-19 07:17:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:15,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:15,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:15,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365894912] [2022-01-19 07:17:15,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365894912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:15,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:15,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:15,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857888373] [2022-01-19 07:17:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:15,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:15,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:15,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:15,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 403 transitions, 9843 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:15,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:15,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:15,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:16,776 INFO L129 PetriNetUnfolder]: 755/5952 cut-off events. [2022-01-19 07:17:16,776 INFO L130 PetriNetUnfolder]: For 52888/53167 co-relation queries the response was YES. [2022-01-19 07:17:16,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19477 conditions, 5952 events. 755/5952 cut-off events. For 52888/53167 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 72865 event pairs, 156 based on Foata normal form. 72/5765 useless extension candidates. Maximal degree in co-relation 18260. Up to 818 conditions per place. [2022-01-19 07:17:16,843 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 272 selfloop transitions, 54 changer transitions 0/418 dead transitions. [2022-01-19 07:17:16,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 418 transitions, 10650 flow [2022-01-19 07:17:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-01-19 07:17:16,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2022-01-19 07:17:16,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-01-19 07:17:16,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-01-19 07:17:16,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:16,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-01-19 07:17:16,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:16,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:16,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:16,846 INFO L186 Difference]: Start difference. First operand has 301 places, 403 transitions, 9843 flow. Second operand 5 states and 538 transitions. [2022-01-19 07:17:16,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 418 transitions, 10650 flow [2022-01-19 07:17:17,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 418 transitions, 10604 flow, removed 23 selfloop flow, removed 0 redundant places. [2022-01-19 07:17:17,131 INFO L242 Difference]: Finished difference. Result has 306 places, 406 transitions, 10003 flow [2022-01-19 07:17:17,132 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9759, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10003, PETRI_PLACES=306, PETRI_TRANSITIONS=406} [2022-01-19 07:17:17,132 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 194 predicate places. [2022-01-19 07:17:17,132 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 406 transitions, 10003 flow [2022-01-19 07:17:17,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:17,135 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:17,135 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:17,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 07:17:17,135 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1228147129, now seen corresponding path program 6 times [2022-01-19 07:17:17,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:17,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911679042] [2022-01-19 07:17:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:17,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:17,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:17,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911679042] [2022-01-19 07:17:17,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911679042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:17,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:17,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:17,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848554339] [2022-01-19 07:17:17,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:17,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:17,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:17,193 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:17,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 406 transitions, 10003 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:17,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:17,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:17,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:18,200 INFO L129 PetriNetUnfolder]: 744/5959 cut-off events. [2022-01-19 07:17:18,200 INFO L130 PetriNetUnfolder]: For 54521/54785 co-relation queries the response was YES. [2022-01-19 07:17:18,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19547 conditions, 5959 events. 744/5959 cut-off events. For 54521/54785 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 73103 event pairs, 201 based on Foata normal form. 69/5777 useless extension candidates. Maximal degree in co-relation 18329. Up to 627 conditions per place. [2022-01-19 07:17:18,266 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 260 selfloop transitions, 71 changer transitions 0/423 dead transitions. [2022-01-19 07:17:18,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 423 transitions, 10814 flow [2022-01-19 07:17:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-01-19 07:17:18,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-01-19 07:17:18,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-01-19 07:17:18,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-01-19 07:17:18,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:18,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-01-19 07:17:18,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:18,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:18,269 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:18,269 INFO L186 Difference]: Start difference. First operand has 306 places, 406 transitions, 10003 flow. Second operand 5 states and 541 transitions. [2022-01-19 07:17:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 423 transitions, 10814 flow [2022-01-19 07:17:18,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 423 transitions, 10769 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:18,536 INFO L242 Difference]: Finished difference. Result has 310 places, 407 transitions, 10148 flow [2022-01-19 07:17:18,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9926, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10148, PETRI_PLACES=310, PETRI_TRANSITIONS=407} [2022-01-19 07:17:18,536 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 198 predicate places. [2022-01-19 07:17:18,536 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 407 transitions, 10148 flow [2022-01-19 07:17:18,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:18,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:18,537 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:18,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 07:17:18,537 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:18,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:18,537 INFO L85 PathProgramCache]: Analyzing trace with hash 947096267, now seen corresponding path program 6 times [2022-01-19 07:17:18,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:18,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620964934] [2022-01-19 07:17:18,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:18,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:18,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:18,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620964934] [2022-01-19 07:17:18,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620964934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:18,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:18,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:18,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294794603] [2022-01-19 07:17:18,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:18,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:18,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:18,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:18,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:18,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:18,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 407 transitions, 10148 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:18,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:18,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:18,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:19,476 INFO L129 PetriNetUnfolder]: 738/5957 cut-off events. [2022-01-19 07:17:19,476 INFO L130 PetriNetUnfolder]: For 59717/59974 co-relation queries the response was YES. [2022-01-19 07:17:19,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19605 conditions, 5957 events. 738/5957 cut-off events. For 59717/59974 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 73194 event pairs, 186 based on Foata normal form. 70/5796 useless extension candidates. Maximal degree in co-relation 18402. Up to 600 conditions per place. [2022-01-19 07:17:19,546 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 237 selfloop transitions, 97 changer transitions 2/428 dead transitions. [2022-01-19 07:17:19,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 428 transitions, 10938 flow [2022-01-19 07:17:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:17:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:17:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 659 transitions. [2022-01-19 07:17:19,548 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885752688172043 [2022-01-19 07:17:19,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 659 transitions. [2022-01-19 07:17:19,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 659 transitions. [2022-01-19 07:17:19,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:19,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 659 transitions. [2022-01-19 07:17:19,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:19,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:19,549 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:19,549 INFO L186 Difference]: Start difference. First operand has 310 places, 407 transitions, 10148 flow. Second operand 6 states and 659 transitions. [2022-01-19 07:17:19,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 428 transitions, 10938 flow [2022-01-19 07:17:19,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 428 transitions, 10880 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:19,929 INFO L242 Difference]: Finished difference. Result has 314 places, 405 transitions, 10205 flow [2022-01-19 07:17:19,930 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10205, PETRI_PLACES=314, PETRI_TRANSITIONS=405} [2022-01-19 07:17:19,930 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 202 predicate places. [2022-01-19 07:17:19,930 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 405 transitions, 10205 flow [2022-01-19 07:17:19,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:19,931 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:19,931 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:19,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 07:17:19,931 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1895957427, now seen corresponding path program 7 times [2022-01-19 07:17:19,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:19,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159454342] [2022-01-19 07:17:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:19,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:20,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159454342] [2022-01-19 07:17:20,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159454342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:20,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:20,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:20,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115868645] [2022-01-19 07:17:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:20,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:20,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:20,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:20,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 405 transitions, 10205 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:20,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:20,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:20,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:20,877 INFO L129 PetriNetUnfolder]: 771/6144 cut-off events. [2022-01-19 07:17:20,877 INFO L130 PetriNetUnfolder]: For 57411/57728 co-relation queries the response was YES. [2022-01-19 07:17:20,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20163 conditions, 6144 events. 771/6144 cut-off events. For 57411/57728 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 75888 event pairs, 202 based on Foata normal form. 79/5960 useless extension candidates. Maximal degree in co-relation 18934. Up to 610 conditions per place. [2022-01-19 07:17:20,955 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 259 selfloop transitions, 82 changer transitions 1/434 dead transitions. [2022-01-19 07:17:20,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 434 transitions, 11421 flow [2022-01-19 07:17:20,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 07:17:20,956 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 07:17:20,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 07:17:20,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 07:17:20,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:20,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 07:17:20,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:20,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:20,958 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:20,958 INFO L186 Difference]: Start difference. First operand has 314 places, 405 transitions, 10205 flow. Second operand 5 states and 546 transitions. [2022-01-19 07:17:20,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 434 transitions, 11421 flow [2022-01-19 07:17:21,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 434 transitions, 11324 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:21,348 INFO L242 Difference]: Finished difference. Result has 318 places, 411 transitions, 10627 flow [2022-01-19 07:17:21,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10078, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10627, PETRI_PLACES=318, PETRI_TRANSITIONS=411} [2022-01-19 07:17:21,348 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 206 predicate places. [2022-01-19 07:17:21,349 INFO L470 AbstractCegarLoop]: Abstraction has has 318 places, 411 transitions, 10627 flow [2022-01-19 07:17:21,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:21,349 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:21,349 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:21,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 07:17:21,349 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:21,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash 247948725, now seen corresponding path program 7 times [2022-01-19 07:17:21,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:21,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490948404] [2022-01-19 07:17:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:21,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:21,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:21,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490948404] [2022-01-19 07:17:21,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490948404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:21,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:21,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:21,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628315773] [2022-01-19 07:17:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:21,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:21,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:21,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:21,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 411 transitions, 10627 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:21,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:21,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:21,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:22,461 INFO L129 PetriNetUnfolder]: 783/6266 cut-off events. [2022-01-19 07:17:22,462 INFO L130 PetriNetUnfolder]: For 64617/64945 co-relation queries the response was YES. [2022-01-19 07:17:22,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20687 conditions, 6266 events. 783/6266 cut-off events. For 64617/64945 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 77986 event pairs, 213 based on Foata normal form. 94/6098 useless extension candidates. Maximal degree in co-relation 19491. Up to 635 conditions per place. [2022-01-19 07:17:22,510 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 250 selfloop transitions, 88 changer transitions 6/436 dead transitions. [2022-01-19 07:17:22,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 436 transitions, 11625 flow [2022-01-19 07:17:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 07:17:22,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 07:17:22,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 07:17:22,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 07:17:22,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:22,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 07:17:22,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:22,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:22,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:22,515 INFO L186 Difference]: Start difference. First operand has 318 places, 411 transitions, 10627 flow. Second operand 5 states and 553 transitions. [2022-01-19 07:17:22,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 436 transitions, 11625 flow [2022-01-19 07:17:22,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 436 transitions, 11558 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:22,805 INFO L242 Difference]: Finished difference. Result has 323 places, 410 transitions, 10766 flow [2022-01-19 07:17:22,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10343, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10766, PETRI_PLACES=323, PETRI_TRANSITIONS=410} [2022-01-19 07:17:22,805 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 211 predicate places. [2022-01-19 07:17:22,806 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 410 transitions, 10766 flow [2022-01-19 07:17:22,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:22,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:22,806 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:22,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 07:17:22,806 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:22,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1382150905, now seen corresponding path program 8 times [2022-01-19 07:17:22,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:22,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262369132] [2022-01-19 07:17:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:22,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:22,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:22,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262369132] [2022-01-19 07:17:22,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262369132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:22,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:22,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:22,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386912992] [2022-01-19 07:17:22,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:22,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:22,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:22,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:22,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 410 transitions, 10766 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:22,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:22,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:22,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:23,782 INFO L129 PetriNetUnfolder]: 756/6078 cut-off events. [2022-01-19 07:17:23,782 INFO L130 PetriNetUnfolder]: For 64566/64874 co-relation queries the response was YES. [2022-01-19 07:17:23,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20354 conditions, 6078 events. 756/6078 cut-off events. For 64566/64874 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 75360 event pairs, 216 based on Foata normal form. 77/5903 useless extension candidates. Maximal degree in co-relation 19153. Up to 598 conditions per place. [2022-01-19 07:17:23,854 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 257 selfloop transitions, 79 changer transitions 1/429 dead transitions. [2022-01-19 07:17:23,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 429 transitions, 11601 flow [2022-01-19 07:17:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2022-01-19 07:17:23,855 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2022-01-19 07:17:23,855 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2022-01-19 07:17:23,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2022-01-19 07:17:23,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:23,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2022-01-19 07:17:23,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:23,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:23,856 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:23,857 INFO L186 Difference]: Start difference. First operand has 323 places, 410 transitions, 10766 flow. Second operand 5 states and 551 transitions. [2022-01-19 07:17:23,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 429 transitions, 11601 flow [2022-01-19 07:17:24,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 429 transitions, 11445 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-01-19 07:17:24,183 INFO L242 Difference]: Finished difference. Result has 324 places, 408 transitions, 10675 flow [2022-01-19 07:17:24,183 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10567, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10675, PETRI_PLACES=324, PETRI_TRANSITIONS=408} [2022-01-19 07:17:24,184 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 212 predicate places. [2022-01-19 07:17:24,184 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 408 transitions, 10675 flow [2022-01-19 07:17:24,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:24,184 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:24,184 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:24,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 07:17:24,184 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:24,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:24,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1751579267, now seen corresponding path program 8 times [2022-01-19 07:17:24,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:24,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427533057] [2022-01-19 07:17:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:24,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:24,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:24,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427533057] [2022-01-19 07:17:24,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427533057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:24,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:24,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:24,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112500958] [2022-01-19 07:17:24,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:24,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:24,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:24,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:24,253 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:24,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 408 transitions, 10675 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:24,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:24,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:24,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:25,327 INFO L129 PetriNetUnfolder]: 775/6239 cut-off events. [2022-01-19 07:17:25,327 INFO L130 PetriNetUnfolder]: For 61336/61665 co-relation queries the response was YES. [2022-01-19 07:17:25,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20634 conditions, 6239 events. 775/6239 cut-off events. For 61336/61665 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 77376 event pairs, 204 based on Foata normal form. 80/6053 useless extension candidates. Maximal degree in co-relation 19472. Up to 626 conditions per place. [2022-01-19 07:17:25,399 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 247 selfloop transitions, 89 changer transitions 0/428 dead transitions. [2022-01-19 07:17:25,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 428 transitions, 11591 flow [2022-01-19 07:17:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 07:17:25,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 07:17:25,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 07:17:25,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 07:17:25,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:25,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 07:17:25,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:25,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:25,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:25,402 INFO L186 Difference]: Start difference. First operand has 324 places, 408 transitions, 10675 flow. Second operand 5 states and 546 transitions. [2022-01-19 07:17:25,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 428 transitions, 11591 flow [2022-01-19 07:17:25,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 428 transitions, 11467 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-01-19 07:17:25,869 INFO L242 Difference]: Finished difference. Result has 325 places, 410 transitions, 10866 flow [2022-01-19 07:17:25,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10508, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10866, PETRI_PLACES=325, PETRI_TRANSITIONS=410} [2022-01-19 07:17:25,869 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 213 predicate places. [2022-01-19 07:17:25,870 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 410 transitions, 10866 flow [2022-01-19 07:17:25,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:25,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:25,870 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:25,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 07:17:25,870 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:25,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:25,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1641676151, now seen corresponding path program 10 times [2022-01-19 07:17:25,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:25,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848930783] [2022-01-19 07:17:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:25,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:25,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:25,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848930783] [2022-01-19 07:17:25,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848930783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:25,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:25,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:25,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669644997] [2022-01-19 07:17:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:25,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:25,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:25,949 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:25,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 410 transitions, 10866 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:25,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:25,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:25,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:26,944 INFO L129 PetriNetUnfolder]: 777/6348 cut-off events. [2022-01-19 07:17:26,944 INFO L130 PetriNetUnfolder]: For 67814/68108 co-relation queries the response was YES. [2022-01-19 07:17:27,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21027 conditions, 6348 events. 777/6348 cut-off events. For 67814/68108 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 79249 event pairs, 225 based on Foata normal form. 90/6163 useless extension candidates. Maximal degree in co-relation 19660. Up to 649 conditions per place. [2022-01-19 07:17:27,015 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 265 selfloop transitions, 85 changer transitions 2/444 dead transitions. [2022-01-19 07:17:27,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 444 transitions, 12409 flow [2022-01-19 07:17:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 07:17:27,016 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 07:17:27,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 07:17:27,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 07:17:27,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:27,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 07:17:27,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:27,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:27,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:27,017 INFO L186 Difference]: Start difference. First operand has 325 places, 410 transitions, 10866 flow. Second operand 5 states and 553 transitions. [2022-01-19 07:17:27,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 444 transitions, 12409 flow [2022-01-19 07:17:27,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 444 transitions, 12241 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:17:27,333 INFO L242 Difference]: Finished difference. Result has 329 places, 414 transitions, 11256 flow [2022-01-19 07:17:27,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10582, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11256, PETRI_PLACES=329, PETRI_TRANSITIONS=414} [2022-01-19 07:17:27,334 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2022-01-19 07:17:27,334 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 414 transitions, 11256 flow [2022-01-19 07:17:27,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:27,334 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:27,334 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:27,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 07:17:27,334 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash -892420571, now seen corresponding path program 10 times [2022-01-19 07:17:27,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:27,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194831237] [2022-01-19 07:17:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:27,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:27,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:27,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194831237] [2022-01-19 07:17:27,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194831237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:27,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:27,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:27,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174066190] [2022-01-19 07:17:27,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:27,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:27,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:27,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:27,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 414 transitions, 11256 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:27,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:27,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:27,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:28,459 INFO L129 PetriNetUnfolder]: 802/6544 cut-off events. [2022-01-19 07:17:28,460 INFO L130 PetriNetUnfolder]: For 71410/71727 co-relation queries the response was YES. [2022-01-19 07:17:28,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21929 conditions, 6544 events. 802/6544 cut-off events. For 71410/71727 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 82364 event pairs, 256 based on Foata normal form. 80/6341 useless extension candidates. Maximal degree in co-relation 20453. Up to 662 conditions per place. [2022-01-19 07:17:28,530 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 275 selfloop transitions, 86 changer transitions 1/454 dead transitions. [2022-01-19 07:17:28,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 454 transitions, 12889 flow [2022-01-19 07:17:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2022-01-19 07:17:28,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885483870967742 [2022-01-19 07:17:28,531 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2022-01-19 07:17:28,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2022-01-19 07:17:28,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:28,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2022-01-19 07:17:28,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:28,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:28,532 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:28,532 INFO L186 Difference]: Start difference. First operand has 329 places, 414 transitions, 11256 flow. Second operand 5 states and 549 transitions. [2022-01-19 07:17:28,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 454 transitions, 12889 flow [2022-01-19 07:17:28,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 454 transitions, 12827 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:28,869 INFO L242 Difference]: Finished difference. Result has 336 places, 430 transitions, 12154 flow [2022-01-19 07:17:28,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11156, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12154, PETRI_PLACES=336, PETRI_TRANSITIONS=430} [2022-01-19 07:17:28,870 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 224 predicate places. [2022-01-19 07:17:28,870 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 430 transitions, 12154 flow [2022-01-19 07:17:28,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:28,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:28,874 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:28,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 07:17:28,874 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:28,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1390556285, now seen corresponding path program 11 times [2022-01-19 07:17:28,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:28,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544202110] [2022-01-19 07:17:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:28,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:28,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:28,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544202110] [2022-01-19 07:17:28,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544202110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:28,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:28,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:28,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551265042] [2022-01-19 07:17:28,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:28,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:28,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:28,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:28,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:28,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 430 transitions, 12154 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:28,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:28,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:28,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:29,979 INFO L129 PetriNetUnfolder]: 811/6781 cut-off events. [2022-01-19 07:17:29,979 INFO L130 PetriNetUnfolder]: For 76561/76859 co-relation queries the response was YES. [2022-01-19 07:17:30,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22469 conditions, 6781 events. 811/6781 cut-off events. For 76561/76859 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 86124 event pairs, 243 based on Foata normal form. 88/6564 useless extension candidates. Maximal degree in co-relation 20991. Up to 705 conditions per place. [2022-01-19 07:17:30,067 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 280 selfloop transitions, 84 changer transitions 3/459 dead transitions. [2022-01-19 07:17:30,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 459 transitions, 13449 flow [2022-01-19 07:17:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 07:17:30,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 07:17:30,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 07:17:30,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 07:17:30,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:30,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 07:17:30,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:30,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:30,070 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:30,070 INFO L186 Difference]: Start difference. First operand has 336 places, 430 transitions, 12154 flow. Second operand 5 states and 553 transitions. [2022-01-19 07:17:30,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 459 transitions, 13449 flow [2022-01-19 07:17:30,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 459 transitions, 13386 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:30,455 INFO L242 Difference]: Finished difference. Result has 342 places, 435 transitions, 12688 flow [2022-01-19 07:17:30,455 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11944, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12688, PETRI_PLACES=342, PETRI_TRANSITIONS=435} [2022-01-19 07:17:30,455 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 230 predicate places. [2022-01-19 07:17:30,455 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 435 transitions, 12688 flow [2022-01-19 07:17:30,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:30,456 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:30,456 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:30,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 07:17:30,456 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:30,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1855961239, now seen corresponding path program 12 times [2022-01-19 07:17:30,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:30,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193763178] [2022-01-19 07:17:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:30,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:30,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:30,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193763178] [2022-01-19 07:17:30,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193763178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:30,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:30,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:30,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822180870] [2022-01-19 07:17:30,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:30,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:30,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:30,507 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:30,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 435 transitions, 12688 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:30,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:30,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:30,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:31,654 INFO L129 PetriNetUnfolder]: 812/6736 cut-off events. [2022-01-19 07:17:31,654 INFO L130 PetriNetUnfolder]: For 76707/77021 co-relation queries the response was YES. [2022-01-19 07:17:31,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22631 conditions, 6736 events. 812/6736 cut-off events. For 76707/77021 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 85229 event pairs, 251 based on Foata normal form. 80/6513 useless extension candidates. Maximal degree in co-relation 21150. Up to 698 conditions per place. [2022-01-19 07:17:31,719 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 261 selfloop transitions, 100 changer transitions 3/456 dead transitions. [2022-01-19 07:17:31,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 456 transitions, 13563 flow [2022-01-19 07:17:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:17:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:17:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 653 transitions. [2022-01-19 07:17:31,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8776881720430108 [2022-01-19 07:17:31,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 653 transitions. [2022-01-19 07:17:31,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 653 transitions. [2022-01-19 07:17:31,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:31,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 653 transitions. [2022-01-19 07:17:31,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:31,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:31,722 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:31,722 INFO L186 Difference]: Start difference. First operand has 342 places, 435 transitions, 12688 flow. Second operand 6 states and 653 transitions. [2022-01-19 07:17:31,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 456 transitions, 13563 flow [2022-01-19 07:17:32,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 456 transitions, 13548 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:32,084 INFO L242 Difference]: Finished difference. Result has 346 places, 433 transitions, 12759 flow [2022-01-19 07:17:32,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12624, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12759, PETRI_PLACES=346, PETRI_TRANSITIONS=433} [2022-01-19 07:17:32,085 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 234 predicate places. [2022-01-19 07:17:32,085 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 433 transitions, 12759 flow [2022-01-19 07:17:32,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:32,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:32,085 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:32,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 07:17:32,085 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash -581066469, now seen corresponding path program 11 times [2022-01-19 07:17:32,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:32,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784906867] [2022-01-19 07:17:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:32,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:32,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:32,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784906867] [2022-01-19 07:17:32,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784906867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:32,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:32,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:17:32,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470055494] [2022-01-19 07:17:32,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:32,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:17:32,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:17:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:17:32,159 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:32,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 433 transitions, 12759 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:32,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:32,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:32,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:33,241 INFO L129 PetriNetUnfolder]: 856/7153 cut-off events. [2022-01-19 07:17:33,242 INFO L130 PetriNetUnfolder]: For 78690/79030 co-relation queries the response was YES. [2022-01-19 07:17:33,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23549 conditions, 7153 events. 856/7153 cut-off events. For 78690/79030 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 91471 event pairs, 258 based on Foata normal form. 90/6929 useless extension candidates. Maximal degree in co-relation 22183. Up to 770 conditions per place. [2022-01-19 07:17:33,334 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 272 selfloop transitions, 92 changer transitions 0/456 dead transitions. [2022-01-19 07:17:33,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 456 transitions, 13830 flow [2022-01-19 07:17:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:17:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:17:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 07:17:33,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 07:17:33,336 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 07:17:33,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 07:17:33,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:33,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 07:17:33,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:33,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:33,337 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:33,337 INFO L186 Difference]: Start difference. First operand has 346 places, 433 transitions, 12759 flow. Second operand 5 states and 548 transitions. [2022-01-19 07:17:33,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 456 transitions, 13830 flow [2022-01-19 07:17:33,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 456 transitions, 13592 flow, removed 44 selfloop flow, removed 4 redundant places. [2022-01-19 07:17:33,780 INFO L242 Difference]: Finished difference. Result has 348 places, 438 transitions, 13038 flow [2022-01-19 07:17:33,781 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12432, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13038, PETRI_PLACES=348, PETRI_TRANSITIONS=438} [2022-01-19 07:17:33,781 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 236 predicate places. [2022-01-19 07:17:33,781 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 438 transitions, 13038 flow [2022-01-19 07:17:33,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:33,781 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:33,781 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:33,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 07:17:33,781 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2128585162, now seen corresponding path program 1 times [2022-01-19 07:17:33,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:33,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300697262] [2022-01-19 07:17:33,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:33,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:33,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:33,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300697262] [2022-01-19 07:17:33,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300697262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:33,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:33,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:17:33,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143947328] [2022-01-19 07:17:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:33,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:17:33,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:17:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:17:33,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:33,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 438 transitions, 13038 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:33,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:33,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:33,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:34,848 INFO L129 PetriNetUnfolder]: 562/5490 cut-off events. [2022-01-19 07:17:34,848 INFO L130 PetriNetUnfolder]: For 57435/68368 co-relation queries the response was YES. [2022-01-19 07:17:34,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17023 conditions, 5490 events. 562/5490 cut-off events. For 57435/68368 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 71859 event pairs, 152 based on Foata normal form. 172/5443 useless extension candidates. Maximal degree in co-relation 15988. Up to 823 conditions per place. [2022-01-19 07:17:34,900 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 21 selfloop transitions, 0 changer transitions 132/458 dead transitions. [2022-01-19 07:17:34,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 458 transitions, 13175 flow [2022-01-19 07:17:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 07:17:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 07:17:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 916 transitions. [2022-01-19 07:17:34,901 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8207885304659498 [2022-01-19 07:17:34,901 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 916 transitions. [2022-01-19 07:17:34,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 916 transitions. [2022-01-19 07:17:34,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:34,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 916 transitions. [2022-01-19 07:17:34,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.77777777777777) internal successors, (916), 9 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:34,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:34,903 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:34,903 INFO L186 Difference]: Start difference. First operand has 348 places, 438 transitions, 13038 flow. Second operand 9 states and 916 transitions. [2022-01-19 07:17:34,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 458 transitions, 13175 flow [2022-01-19 07:17:35,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 458 transitions, 13111 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 07:17:35,161 INFO L242 Difference]: Finished difference. Result has 362 places, 326 transitions, 8612 flow [2022-01-19 07:17:35,161 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12974, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8612, PETRI_PLACES=362, PETRI_TRANSITIONS=326} [2022-01-19 07:17:35,162 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 250 predicate places. [2022-01-19 07:17:35,162 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 326 transitions, 8612 flow [2022-01-19 07:17:35,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:35,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:35,162 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:35,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 07:17:35,162 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:35,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash -406601066, now seen corresponding path program 1 times [2022-01-19 07:17:35,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:35,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854921623] [2022-01-19 07:17:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:35,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:35,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:35,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854921623] [2022-01-19 07:17:35,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854921623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:35,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:35,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:17:35,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657910360] [2022-01-19 07:17:35,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:35,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:17:35,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:17:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:17:35,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 07:17:35,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 326 transitions, 8612 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:35,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:35,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 07:17:35,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:35,914 INFO L129 PetriNetUnfolder]: 396/3568 cut-off events. [2022-01-19 07:17:35,915 INFO L130 PetriNetUnfolder]: For 39922/44131 co-relation queries the response was YES. [2022-01-19 07:17:35,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12135 conditions, 3568 events. 396/3568 cut-off events. For 39922/44131 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 43685 event pairs, 83 based on Foata normal form. 148/3587 useless extension candidates. Maximal degree in co-relation 12025. Up to 377 conditions per place. [2022-01-19 07:17:35,956 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 19 selfloop transitions, 0 changer transitions 172/345 dead transitions. [2022-01-19 07:17:35,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 345 transitions, 8753 flow [2022-01-19 07:17:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 07:17:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 07:17:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 914 transitions. [2022-01-19 07:17:35,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8189964157706093 [2022-01-19 07:17:35,957 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 914 transitions. [2022-01-19 07:17:35,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 914 transitions. [2022-01-19 07:17:35,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:35,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 914 transitions. [2022-01-19 07:17:35,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.55555555555556) internal successors, (914), 9 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:35,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:35,959 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:35,959 INFO L186 Difference]: Start difference. First operand has 362 places, 326 transitions, 8612 flow. Second operand 9 states and 914 transitions. [2022-01-19 07:17:35,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 345 transitions, 8753 flow [2022-01-19 07:17:36,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 345 transitions, 7925 flow, removed 200 selfloop flow, removed 26 redundant places. [2022-01-19 07:17:36,134 INFO L242 Difference]: Finished difference. Result has 333 places, 173 transitions, 2897 flow [2022-01-19 07:17:36,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7794, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2897, PETRI_PLACES=333, PETRI_TRANSITIONS=173} [2022-01-19 07:17:36,140 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 221 predicate places. [2022-01-19 07:17:36,140 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 173 transitions, 2897 flow [2022-01-19 07:17:36,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:36,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:36,141 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:36,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 07:17:36,141 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:36,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1967076804, now seen corresponding path program 1 times [2022-01-19 07:17:36,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:36,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093121581] [2022-01-19 07:17:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:36,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:36,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:36,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093121581] [2022-01-19 07:17:36,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093121581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:36,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:36,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:36,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051320234] [2022-01-19 07:17:36,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:36,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:36,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:36,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:36,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:36,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:36,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 173 transitions, 2897 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:36,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:36,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:36,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:36,735 INFO L129 PetriNetUnfolder]: 846/2443 cut-off events. [2022-01-19 07:17:36,735 INFO L130 PetriNetUnfolder]: For 7900/8154 co-relation queries the response was YES. [2022-01-19 07:17:36,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 2443 events. 846/2443 cut-off events. For 7900/8154 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 22022 event pairs, 379 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 6554. Up to 980 conditions per place. [2022-01-19 07:17:36,760 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 58 selfloop transitions, 24 changer transitions 16/241 dead transitions. [2022-01-19 07:17:36,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 241 transitions, 3330 flow [2022-01-19 07:17:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:17:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:17:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1517 transitions. [2022-01-19 07:17:36,762 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764616935483871 [2022-01-19 07:17:36,762 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1517 transitions. [2022-01-19 07:17:36,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1517 transitions. [2022-01-19 07:17:36,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:36,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1517 transitions. [2022-01-19 07:17:36,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:36,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:36,766 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:36,766 INFO L186 Difference]: Start difference. First operand has 333 places, 173 transitions, 2897 flow. Second operand 16 states and 1517 transitions. [2022-01-19 07:17:36,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 241 transitions, 3330 flow [2022-01-19 07:17:36,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 241 transitions, 2420 flow, removed 109 selfloop flow, removed 78 redundant places. [2022-01-19 07:17:36,801 INFO L242 Difference]: Finished difference. Result has 236 places, 197 transitions, 2218 flow [2022-01-19 07:17:36,801 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2218, PETRI_PLACES=236, PETRI_TRANSITIONS=197} [2022-01-19 07:17:36,802 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 124 predicate places. [2022-01-19 07:17:36,802 INFO L470 AbstractCegarLoop]: Abstraction has has 236 places, 197 transitions, 2218 flow [2022-01-19 07:17:36,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:36,802 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:36,802 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:36,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 07:17:36,802 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1310033352, now seen corresponding path program 1 times [2022-01-19 07:17:36,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:36,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014958063] [2022-01-19 07:17:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:36,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:36,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:36,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014958063] [2022-01-19 07:17:36,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014958063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:36,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:36,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:36,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947932449] [2022-01-19 07:17:36,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:36,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:36,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:36,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:36,880 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:36,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 197 transitions, 2218 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:36,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:36,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:36,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:37,394 INFO L129 PetriNetUnfolder]: 944/2751 cut-off events. [2022-01-19 07:17:37,394 INFO L130 PetriNetUnfolder]: For 3974/4135 co-relation queries the response was YES. [2022-01-19 07:17:37,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8128 conditions, 2751 events. 944/2751 cut-off events. For 3974/4135 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 25738 event pairs, 389 based on Foata normal form. 2/2671 useless extension candidates. Maximal degree in co-relation 8076. Up to 1141 conditions per place. [2022-01-19 07:17:37,417 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 94 selfloop transitions, 31 changer transitions 28/296 dead transitions. [2022-01-19 07:17:37,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 296 transitions, 2896 flow [2022-01-19 07:17:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:17:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:17:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-01-19 07:17:37,419 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 07:17:37,419 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-01-19 07:17:37,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-01-19 07:17:37,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:37,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-01-19 07:17:37,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:37,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:37,423 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:37,424 INFO L186 Difference]: Start difference. First operand has 236 places, 197 transitions, 2218 flow. Second operand 24 states and 2264 transitions. [2022-01-19 07:17:37,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 296 transitions, 2896 flow [2022-01-19 07:17:37,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 296 transitions, 2814 flow, removed 25 selfloop flow, removed 4 redundant places. [2022-01-19 07:17:37,446 INFO L242 Difference]: Finished difference. Result has 273 places, 227 transitions, 2453 flow [2022-01-19 07:17:37,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2453, PETRI_PLACES=273, PETRI_TRANSITIONS=227} [2022-01-19 07:17:37,447 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 161 predicate places. [2022-01-19 07:17:37,447 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 227 transitions, 2453 flow [2022-01-19 07:17:37,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:37,447 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:37,447 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:37,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 07:17:37,448 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:37,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1827326326, now seen corresponding path program 2 times [2022-01-19 07:17:37,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:37,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98406723] [2022-01-19 07:17:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:37,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:37,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:37,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98406723] [2022-01-19 07:17:37,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98406723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:37,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:37,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:37,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891928720] [2022-01-19 07:17:37,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:37,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:37,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:37,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:37,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:37,527 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:37,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 227 transitions, 2453 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:37,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:37,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:37,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:38,115 INFO L129 PetriNetUnfolder]: 1054/3159 cut-off events. [2022-01-19 07:17:38,116 INFO L130 PetriNetUnfolder]: For 7566/7733 co-relation queries the response was YES. [2022-01-19 07:17:38,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11080 conditions, 3159 events. 1054/3159 cut-off events. For 7566/7733 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 30567 event pairs, 341 based on Foata normal form. 9/3084 useless extension candidates. Maximal degree in co-relation 11010. Up to 1034 conditions per place. [2022-01-19 07:17:38,145 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 110 selfloop transitions, 39 changer transitions 31/323 dead transitions. [2022-01-19 07:17:38,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 323 transitions, 3247 flow [2022-01-19 07:17:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:17:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:17:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-01-19 07:17:38,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 07:17:38,147 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-01-19 07:17:38,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-01-19 07:17:38,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:38,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-01-19 07:17:38,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:38,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:38,161 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:38,161 INFO L186 Difference]: Start difference. First operand has 273 places, 227 transitions, 2453 flow. Second operand 24 states and 2264 transitions. [2022-01-19 07:17:38,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 323 transitions, 3247 flow [2022-01-19 07:17:38,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 323 transitions, 3117 flow, removed 53 selfloop flow, removed 4 redundant places. [2022-01-19 07:17:38,219 INFO L242 Difference]: Finished difference. Result has 308 places, 252 transitions, 2668 flow [2022-01-19 07:17:38,219 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2668, PETRI_PLACES=308, PETRI_TRANSITIONS=252} [2022-01-19 07:17:38,220 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 196 predicate places. [2022-01-19 07:17:38,220 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 252 transitions, 2668 flow [2022-01-19 07:17:38,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:38,220 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:38,220 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:38,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 07:17:38,221 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:38,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1246184228, now seen corresponding path program 2 times [2022-01-19 07:17:38,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:38,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400030352] [2022-01-19 07:17:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:38,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:38,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400030352] [2022-01-19 07:17:38,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400030352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:38,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:38,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:38,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161647418] [2022-01-19 07:17:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:38,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:38,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:38,304 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:38,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 252 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:38,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:38,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:38,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:39,071 INFO L129 PetriNetUnfolder]: 1259/3678 cut-off events. [2022-01-19 07:17:39,072 INFO L130 PetriNetUnfolder]: For 11747/11905 co-relation queries the response was YES. [2022-01-19 07:17:39,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14022 conditions, 3678 events. 1259/3678 cut-off events. For 11747/11905 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 36740 event pairs, 454 based on Foata normal form. 2/3580 useless extension candidates. Maximal degree in co-relation 13937. Up to 1631 conditions per place. [2022-01-19 07:17:39,112 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 122 selfloop transitions, 45 changer transitions 24/334 dead transitions. [2022-01-19 07:17:39,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 334 transitions, 3592 flow [2022-01-19 07:17:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:17:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:17:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2071 transitions. [2022-01-19 07:17:39,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591642228739003 [2022-01-19 07:17:39,114 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2071 transitions. [2022-01-19 07:17:39,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2071 transitions. [2022-01-19 07:17:39,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:39,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2071 transitions. [2022-01-19 07:17:39,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.13636363636364) internal successors, (2071), 22 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:39,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:39,118 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:39,118 INFO L186 Difference]: Start difference. First operand has 308 places, 252 transitions, 2668 flow. Second operand 22 states and 2071 transitions. [2022-01-19 07:17:39,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 334 transitions, 3592 flow [2022-01-19 07:17:39,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 334 transitions, 3412 flow, removed 44 selfloop flow, removed 10 redundant places. [2022-01-19 07:17:39,186 INFO L242 Difference]: Finished difference. Result has 331 places, 283 transitions, 2937 flow [2022-01-19 07:17:39,186 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2937, PETRI_PLACES=331, PETRI_TRANSITIONS=283} [2022-01-19 07:17:39,186 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 219 predicate places. [2022-01-19 07:17:39,187 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 283 transitions, 2937 flow [2022-01-19 07:17:39,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:39,187 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:39,187 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:39,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 07:17:39,187 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash 493663876, now seen corresponding path program 3 times [2022-01-19 07:17:39,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:39,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493359533] [2022-01-19 07:17:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:39,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:39,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:39,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493359533] [2022-01-19 07:17:39,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493359533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:39,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:39,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:39,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826753000] [2022-01-19 07:17:39,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:39,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:39,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:39,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:39,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:39,268 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:39,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 283 transitions, 2937 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:39,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:39,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:39,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:39,942 INFO L129 PetriNetUnfolder]: 1401/4001 cut-off events. [2022-01-19 07:17:39,942 INFO L130 PetriNetUnfolder]: For 15591/15755 co-relation queries the response was YES. [2022-01-19 07:17:39,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15828 conditions, 4001 events. 1401/4001 cut-off events. For 15591/15755 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 40099 event pairs, 466 based on Foata normal form. 3/3901 useless extension candidates. Maximal degree in co-relation 15734. Up to 1693 conditions per place. [2022-01-19 07:17:40,001 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 140 selfloop transitions, 54 changer transitions 16/353 dead transitions. [2022-01-19 07:17:40,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 353 transitions, 3851 flow [2022-01-19 07:17:40,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:17:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:17:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1517 transitions. [2022-01-19 07:17:40,002 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764616935483871 [2022-01-19 07:17:40,002 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1517 transitions. [2022-01-19 07:17:40,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1517 transitions. [2022-01-19 07:17:40,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:40,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1517 transitions. [2022-01-19 07:17:40,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:40,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:40,007 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:40,007 INFO L186 Difference]: Start difference. First operand has 331 places, 283 transitions, 2937 flow. Second operand 16 states and 1517 transitions. [2022-01-19 07:17:40,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 353 transitions, 3851 flow [2022-01-19 07:17:40,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 353 transitions, 3689 flow, removed 81 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:40,140 INFO L242 Difference]: Finished difference. Result has 352 places, 305 transitions, 3218 flow [2022-01-19 07:17:40,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3218, PETRI_PLACES=352, PETRI_TRANSITIONS=305} [2022-01-19 07:17:40,141 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 240 predicate places. [2022-01-19 07:17:40,141 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 305 transitions, 3218 flow [2022-01-19 07:17:40,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:40,141 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:40,141 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:40,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 07:17:40,141 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:40,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1716812918, now seen corresponding path program 4 times [2022-01-19 07:17:40,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:40,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643131812] [2022-01-19 07:17:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:40,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:40,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:40,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643131812] [2022-01-19 07:17:40,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643131812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:40,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:40,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:40,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99913509] [2022-01-19 07:17:40,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:40,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:40,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:40,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:40,216 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:40,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 305 transitions, 3218 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:40,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:40,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:40,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:41,061 INFO L129 PetriNetUnfolder]: 1499/4320 cut-off events. [2022-01-19 07:17:41,062 INFO L130 PetriNetUnfolder]: For 19063/19230 co-relation queries the response was YES. [2022-01-19 07:17:41,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17817 conditions, 4320 events. 1499/4320 cut-off events. For 19063/19230 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 44332 event pairs, 428 based on Foata normal form. 6/4226 useless extension candidates. Maximal degree in co-relation 17714. Up to 1423 conditions per place. [2022-01-19 07:17:41,120 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 159 selfloop transitions, 79 changer transitions 26/407 dead transitions. [2022-01-19 07:17:41,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 407 transitions, 4454 flow [2022-01-19 07:17:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:17:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:17:41,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2261 transitions. [2022-01-19 07:17:41,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.759744623655914 [2022-01-19 07:17:41,123 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2261 transitions. [2022-01-19 07:17:41,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2261 transitions. [2022-01-19 07:17:41,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:41,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2261 transitions. [2022-01-19 07:17:41,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.20833333333333) internal successors, (2261), 24 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:41,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:41,126 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:41,127 INFO L186 Difference]: Start difference. First operand has 352 places, 305 transitions, 3218 flow. Second operand 24 states and 2261 transitions. [2022-01-19 07:17:41,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 407 transitions, 4454 flow [2022-01-19 07:17:41,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 407 transitions, 4116 flow, removed 143 selfloop flow, removed 5 redundant places. [2022-01-19 07:17:41,358 INFO L242 Difference]: Finished difference. Result has 387 places, 331 transitions, 3497 flow [2022-01-19 07:17:41,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3497, PETRI_PLACES=387, PETRI_TRANSITIONS=331} [2022-01-19 07:17:41,358 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 275 predicate places. [2022-01-19 07:17:41,358 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 331 transitions, 3497 flow [2022-01-19 07:17:41,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:41,359 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:41,359 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:41,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 07:17:41,359 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash -871431556, now seen corresponding path program 5 times [2022-01-19 07:17:41,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:41,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068478644] [2022-01-19 07:17:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:41,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:41,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:41,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068478644] [2022-01-19 07:17:41,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068478644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:41,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:41,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:41,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173886679] [2022-01-19 07:17:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:41,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:41,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:41,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:41,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 331 transitions, 3497 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:41,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:41,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:41,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:42,287 INFO L129 PetriNetUnfolder]: 1557/4567 cut-off events. [2022-01-19 07:17:42,288 INFO L130 PetriNetUnfolder]: For 20699/20866 co-relation queries the response was YES. [2022-01-19 07:17:42,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19265 conditions, 4567 events. 1557/4567 cut-off events. For 20699/20866 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 47999 event pairs, 502 based on Foata normal form. 8/4459 useless extension candidates. Maximal degree in co-relation 19147. Up to 1961 conditions per place. [2022-01-19 07:17:42,349 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 156 selfloop transitions, 72 changer transitions 14/385 dead transitions. [2022-01-19 07:17:42,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 385 transitions, 4503 flow [2022-01-19 07:17:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:17:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:17:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1514 transitions. [2022-01-19 07:17:42,351 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2022-01-19 07:17:42,351 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1514 transitions. [2022-01-19 07:17:42,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1514 transitions. [2022-01-19 07:17:42,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:42,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1514 transitions. [2022-01-19 07:17:42,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.625) internal successors, (1514), 16 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:42,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:42,355 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:42,355 INFO L186 Difference]: Start difference. First operand has 387 places, 331 transitions, 3497 flow. Second operand 16 states and 1514 transitions. [2022-01-19 07:17:42,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 385 transitions, 4503 flow [2022-01-19 07:17:42,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 385 transitions, 4443 flow, removed 27 selfloop flow, removed 3 redundant places. [2022-01-19 07:17:42,479 INFO L242 Difference]: Finished difference. Result has 405 places, 348 transitions, 3861 flow [2022-01-19 07:17:42,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3440, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3861, PETRI_PLACES=405, PETRI_TRANSITIONS=348} [2022-01-19 07:17:42,480 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 293 predicate places. [2022-01-19 07:17:42,480 INFO L470 AbstractCegarLoop]: Abstraction has has 405 places, 348 transitions, 3861 flow [2022-01-19 07:17:42,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:42,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:42,480 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:42,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 07:17:42,480 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash -203294644, now seen corresponding path program 6 times [2022-01-19 07:17:42,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:42,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615610826] [2022-01-19 07:17:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:42,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:42,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:42,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615610826] [2022-01-19 07:17:42,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615610826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:42,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:42,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:42,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701367149] [2022-01-19 07:17:42,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:42,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:42,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:42,562 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:42,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 348 transitions, 3861 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:42,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:42,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:42,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:43,657 INFO L129 PetriNetUnfolder]: 1814/5340 cut-off events. [2022-01-19 07:17:43,657 INFO L130 PetriNetUnfolder]: For 37678/37845 co-relation queries the response was YES. [2022-01-19 07:17:43,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24619 conditions, 5340 events. 1814/5340 cut-off events. For 37678/37845 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 57768 event pairs, 572 based on Foata normal form. 4/5222 useless extension candidates. Maximal degree in co-relation 24495. Up to 1958 conditions per place. [2022-01-19 07:17:43,737 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 187 selfloop transitions, 74 changer transitions 22/426 dead transitions. [2022-01-19 07:17:43,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 426 transitions, 5372 flow [2022-01-19 07:17:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:17:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:17:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1889 transitions. [2022-01-19 07:17:43,739 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616935483870968 [2022-01-19 07:17:43,739 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1889 transitions. [2022-01-19 07:17:43,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1889 transitions. [2022-01-19 07:17:43,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:43,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1889 transitions. [2022-01-19 07:17:43,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.45) internal successors, (1889), 20 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:43,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:43,743 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:43,743 INFO L186 Difference]: Start difference. First operand has 405 places, 348 transitions, 3861 flow. Second operand 20 states and 1889 transitions. [2022-01-19 07:17:43,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 426 transitions, 5372 flow [2022-01-19 07:17:43,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 426 transitions, 5228 flow, removed 58 selfloop flow, removed 3 redundant places. [2022-01-19 07:17:43,940 INFO L242 Difference]: Finished difference. Result has 434 places, 381 transitions, 4580 flow [2022-01-19 07:17:43,941 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3760, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4580, PETRI_PLACES=434, PETRI_TRANSITIONS=381} [2022-01-19 07:17:43,941 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 322 predicate places. [2022-01-19 07:17:43,941 INFO L470 AbstractCegarLoop]: Abstraction has has 434 places, 381 transitions, 4580 flow [2022-01-19 07:17:43,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:43,941 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:43,942 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:43,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 07:17:43,942 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:43,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash -466981080, now seen corresponding path program 7 times [2022-01-19 07:17:43,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:43,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474929651] [2022-01-19 07:17:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:43,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:44,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:44,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474929651] [2022-01-19 07:17:44,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474929651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:44,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:44,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:44,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184112158] [2022-01-19 07:17:44,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:44,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:44,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:44,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:44,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 381 transitions, 4580 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:44,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:44,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:44,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:45,176 INFO L129 PetriNetUnfolder]: 1901/5615 cut-off events. [2022-01-19 07:17:45,177 INFO L130 PetriNetUnfolder]: For 50739/50919 co-relation queries the response was YES. [2022-01-19 07:17:45,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 5615 events. 1901/5615 cut-off events. For 50739/50919 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 61886 event pairs, 544 based on Foata normal form. 4/5486 useless extension candidates. Maximal degree in co-relation 27831. Up to 2201 conditions per place. [2022-01-19 07:17:45,257 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 203 selfloop transitions, 91 changer transitions 19/456 dead transitions. [2022-01-19 07:17:45,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 456 transitions, 6177 flow [2022-01-19 07:17:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:17:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:17:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1885 transitions. [2022-01-19 07:17:45,259 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-01-19 07:17:45,259 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1885 transitions. [2022-01-19 07:17:45,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1885 transitions. [2022-01-19 07:17:45,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:45,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1885 transitions. [2022-01-19 07:17:45,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.25) internal successors, (1885), 20 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:45,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:45,263 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:45,263 INFO L186 Difference]: Start difference. First operand has 434 places, 381 transitions, 4580 flow. Second operand 20 states and 1885 transitions. [2022-01-19 07:17:45,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 456 transitions, 6177 flow [2022-01-19 07:17:45,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 456 transitions, 5715 flow, removed 231 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:45,582 INFO L242 Difference]: Finished difference. Result has 464 places, 414 transitions, 5148 flow [2022-01-19 07:17:45,582 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5148, PETRI_PLACES=464, PETRI_TRANSITIONS=414} [2022-01-19 07:17:45,582 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 352 predicate places. [2022-01-19 07:17:45,582 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 414 transitions, 5148 flow [2022-01-19 07:17:45,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:45,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:45,583 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:45,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 07:17:45,583 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:45,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:45,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2069386238, now seen corresponding path program 8 times [2022-01-19 07:17:45,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259896075] [2022-01-19 07:17:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:45,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:45,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:45,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259896075] [2022-01-19 07:17:45,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259896075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:45,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:45,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:45,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445628333] [2022-01-19 07:17:45,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:45,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:45,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:45,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:45,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 414 transitions, 5148 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:45,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:45,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:45,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:46,869 INFO L129 PetriNetUnfolder]: 1900/5624 cut-off events. [2022-01-19 07:17:46,869 INFO L130 PetriNetUnfolder]: For 45964/46167 co-relation queries the response was YES. [2022-01-19 07:17:46,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27980 conditions, 5624 events. 1900/5624 cut-off events. For 45964/46167 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 61629 event pairs, 522 based on Foata normal form. 14/5514 useless extension candidates. Maximal degree in co-relation 27829. Up to 2190 conditions per place. [2022-01-19 07:17:46,965 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 190 selfloop transitions, 107 changer transitions 23/463 dead transitions. [2022-01-19 07:17:46,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 463 transitions, 6407 flow [2022-01-19 07:17:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:17:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:17:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-01-19 07:17:46,967 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-01-19 07:17:46,967 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-01-19 07:17:46,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-01-19 07:17:46,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:46,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-01-19 07:17:46,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:46,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:46,971 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:46,971 INFO L186 Difference]: Start difference. First operand has 464 places, 414 transitions, 5148 flow. Second operand 18 states and 1699 transitions. [2022-01-19 07:17:46,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 463 transitions, 6407 flow [2022-01-19 07:17:47,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 463 transitions, 6061 flow, removed 173 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:47,306 INFO L242 Difference]: Finished difference. Result has 484 places, 423 transitions, 5357 flow [2022-01-19 07:17:47,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5357, PETRI_PLACES=484, PETRI_TRANSITIONS=423} [2022-01-19 07:17:47,306 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 372 predicate places. [2022-01-19 07:17:47,307 INFO L470 AbstractCegarLoop]: Abstraction has has 484 places, 423 transitions, 5357 flow [2022-01-19 07:17:47,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:47,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:47,307 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:47,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 07:17:47,307 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash -6694178, now seen corresponding path program 9 times [2022-01-19 07:17:47,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:47,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439326232] [2022-01-19 07:17:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:47,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:47,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439326232] [2022-01-19 07:17:47,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439326232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:47,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:47,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:47,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296367634] [2022-01-19 07:17:47,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:47,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:47,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:47,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:47,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:47,390 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:47,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 423 transitions, 5357 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:47,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:47,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:47,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:48,638 INFO L129 PetriNetUnfolder]: 2022/5985 cut-off events. [2022-01-19 07:17:48,638 INFO L130 PetriNetUnfolder]: For 40196/40399 co-relation queries the response was YES. [2022-01-19 07:17:48,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29780 conditions, 5985 events. 2022/5985 cut-off events. For 40196/40399 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 66539 event pairs, 561 based on Foata normal form. 8/5857 useless extension candidates. Maximal degree in co-relation 29623. Up to 2284 conditions per place. [2022-01-19 07:17:48,739 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 220 selfloop transitions, 104 changer transitions 16/483 dead transitions. [2022-01-19 07:17:48,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 483 transitions, 6755 flow [2022-01-19 07:17:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:17:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:17:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-01-19 07:17:48,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-01-19 07:17:48,741 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-01-19 07:17:48,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-01-19 07:17:48,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:48,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-01-19 07:17:48,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:48,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:48,744 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:48,744 INFO L186 Difference]: Start difference. First operand has 484 places, 423 transitions, 5357 flow. Second operand 17 states and 1610 transitions. [2022-01-19 07:17:48,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 483 transitions, 6755 flow [2022-01-19 07:17:49,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 483 transitions, 6637 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-01-19 07:17:49,045 INFO L242 Difference]: Finished difference. Result has 501 places, 445 transitions, 5945 flow [2022-01-19 07:17:49,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5945, PETRI_PLACES=501, PETRI_TRANSITIONS=445} [2022-01-19 07:17:49,046 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 389 predicate places. [2022-01-19 07:17:49,046 INFO L470 AbstractCegarLoop]: Abstraction has has 501 places, 445 transitions, 5945 flow [2022-01-19 07:17:49,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:49,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:49,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:49,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 07:17:49,046 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1085284942, now seen corresponding path program 10 times [2022-01-19 07:17:49,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:49,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533883743] [2022-01-19 07:17:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:49,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:49,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:49,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533883743] [2022-01-19 07:17:49,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533883743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:49,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:49,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:49,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49795625] [2022-01-19 07:17:49,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:49,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:49,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:49,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:49,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:49,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 445 transitions, 5945 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:49,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:49,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:49,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:50,701 INFO L129 PetriNetUnfolder]: 2103/6267 cut-off events. [2022-01-19 07:17:50,701 INFO L130 PetriNetUnfolder]: For 47136/47336 co-relation queries the response was YES. [2022-01-19 07:17:50,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32504 conditions, 6267 events. 2103/6267 cut-off events. For 47136/47336 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 70116 event pairs, 550 based on Foata normal form. 4/6134 useless extension candidates. Maximal degree in co-relation 32342. Up to 2210 conditions per place. [2022-01-19 07:17:50,784 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 244 selfloop transitions, 103 changer transitions 23/513 dead transitions. [2022-01-19 07:17:50,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 513 transitions, 7565 flow [2022-01-19 07:17:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:17:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:17:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1982 transitions. [2022-01-19 07:17:50,786 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761136712749616 [2022-01-19 07:17:50,786 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1982 transitions. [2022-01-19 07:17:50,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1982 transitions. [2022-01-19 07:17:50,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:50,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1982 transitions. [2022-01-19 07:17:50,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:50,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:50,790 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:50,790 INFO L186 Difference]: Start difference. First operand has 501 places, 445 transitions, 5945 flow. Second operand 21 states and 1982 transitions. [2022-01-19 07:17:50,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 513 transitions, 7565 flow [2022-01-19 07:17:51,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 513 transitions, 7397 flow, removed 84 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:51,142 INFO L242 Difference]: Finished difference. Result has 531 places, 470 transitions, 6629 flow [2022-01-19 07:17:51,143 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5781, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6629, PETRI_PLACES=531, PETRI_TRANSITIONS=470} [2022-01-19 07:17:51,143 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 419 predicate places. [2022-01-19 07:17:51,143 INFO L470 AbstractCegarLoop]: Abstraction has has 531 places, 470 transitions, 6629 flow [2022-01-19 07:17:51,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:51,143 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:51,143 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:51,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 07:17:51,143 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:51,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash -776227570, now seen corresponding path program 11 times [2022-01-19 07:17:51,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:51,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079531884] [2022-01-19 07:17:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:51,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:51,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:51,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079531884] [2022-01-19 07:17:51,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079531884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:51,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:51,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:51,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588317566] [2022-01-19 07:17:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:51,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:51,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:51,216 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:51,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 470 transitions, 6629 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:51,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:51,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:51,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:52,758 INFO L129 PetriNetUnfolder]: 2143/6487 cut-off events. [2022-01-19 07:17:52,759 INFO L130 PetriNetUnfolder]: For 54356/54570 co-relation queries the response was YES. [2022-01-19 07:17:52,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34619 conditions, 6487 events. 2143/6487 cut-off events. For 54356/54570 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 73400 event pairs, 565 based on Foata normal form. 4/6351 useless extension candidates. Maximal degree in co-relation 34444. Up to 2457 conditions per place. [2022-01-19 07:17:52,872 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 229 selfloop transitions, 122 changer transitions 20/514 dead transitions. [2022-01-19 07:17:52,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 514 transitions, 7866 flow [2022-01-19 07:17:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:17:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:17:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1700 transitions. [2022-01-19 07:17:52,874 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616487455197133 [2022-01-19 07:17:52,874 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1700 transitions. [2022-01-19 07:17:52,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1700 transitions. [2022-01-19 07:17:52,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:52,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1700 transitions. [2022-01-19 07:17:52,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.44444444444444) internal successors, (1700), 18 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) [2022-01-19 07:17:52,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:52,878 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:52,878 INFO L186 Difference]: Start difference. First operand has 531 places, 470 transitions, 6629 flow. Second operand 18 states and 1700 transitions. [2022-01-19 07:17:52,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 514 transitions, 7866 flow [2022-01-19 07:17:53,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 514 transitions, 7592 flow, removed 137 selfloop flow, removed 2 redundant places. [2022-01-19 07:17:53,289 INFO L242 Difference]: Finished difference. Result has 551 places, 483 transitions, 6927 flow [2022-01-19 07:17:53,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6411, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6927, PETRI_PLACES=551, PETRI_TRANSITIONS=483} [2022-01-19 07:17:53,289 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 439 predicate places. [2022-01-19 07:17:53,289 INFO L470 AbstractCegarLoop]: Abstraction has has 551 places, 483 transitions, 6927 flow [2022-01-19 07:17:53,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:53,289 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:53,289 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:53,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 07:17:53,290 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:53,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:53,290 INFO L85 PathProgramCache]: Analyzing trace with hash -499431268, now seen corresponding path program 12 times [2022-01-19 07:17:53,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:53,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612087778] [2022-01-19 07:17:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:53,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:53,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:53,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612087778] [2022-01-19 07:17:53,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612087778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:53,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:53,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:53,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493730281] [2022-01-19 07:17:53,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:53,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:53,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:53,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:53,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:53,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:53,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 483 transitions, 6927 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:53,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:53,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:53,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:55,187 INFO L129 PetriNetUnfolder]: 2191/6703 cut-off events. [2022-01-19 07:17:55,188 INFO L130 PetriNetUnfolder]: For 55213/55420 co-relation queries the response was YES. [2022-01-19 07:17:55,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36007 conditions, 6703 events. 2191/6703 cut-off events. For 55213/55420 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 77142 event pairs, 572 based on Foata normal form. 8/6577 useless extension candidates. Maximal degree in co-relation 35826. Up to 2521 conditions per place. [2022-01-19 07:17:55,308 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 257 selfloop transitions, 117 changer transitions 15/532 dead transitions. [2022-01-19 07:17:55,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 532 transitions, 8375 flow [2022-01-19 07:17:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:17:55,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:17:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-01-19 07:17:55,309 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-01-19 07:17:55,310 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-01-19 07:17:55,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-01-19 07:17:55,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:55,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-01-19 07:17:55,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:55,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:55,313 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:55,313 INFO L186 Difference]: Start difference. First operand has 551 places, 483 transitions, 6927 flow. Second operand 17 states and 1610 transitions. [2022-01-19 07:17:55,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 532 transitions, 8375 flow [2022-01-19 07:17:55,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 532 transitions, 8213 flow, removed 27 selfloop flow, removed 5 redundant places. [2022-01-19 07:17:55,755 INFO L242 Difference]: Finished difference. Result has 568 places, 502 transitions, 7500 flow [2022-01-19 07:17:55,755 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6777, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7500, PETRI_PLACES=568, PETRI_TRANSITIONS=502} [2022-01-19 07:17:55,755 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 456 predicate places. [2022-01-19 07:17:55,755 INFO L470 AbstractCegarLoop]: Abstraction has has 568 places, 502 transitions, 7500 flow [2022-01-19 07:17:55,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:55,755 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:55,756 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:55,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 07:17:55,756 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1820934362, now seen corresponding path program 13 times [2022-01-19 07:17:55,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:55,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953407553] [2022-01-19 07:17:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:55,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:55,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:55,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953407553] [2022-01-19 07:17:55,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953407553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:55,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:55,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:55,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656001294] [2022-01-19 07:17:55,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:55,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:55,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:55,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:55,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:55,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 502 transitions, 7500 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:55,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:55,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:55,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:17:57,639 INFO L129 PetriNetUnfolder]: 2187/6776 cut-off events. [2022-01-19 07:17:57,639 INFO L130 PetriNetUnfolder]: For 58135/58344 co-relation queries the response was YES. [2022-01-19 07:17:57,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36623 conditions, 6776 events. 2187/6776 cut-off events. For 58135/58344 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 78255 event pairs, 568 based on Foata normal form. 8/6651 useless extension candidates. Maximal degree in co-relation 36437. Up to 2503 conditions per place. [2022-01-19 07:17:57,734 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 254 selfloop transitions, 119 changer transitions 24/540 dead transitions. [2022-01-19 07:17:57,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 540 transitions, 8691 flow [2022-01-19 07:17:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:17:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:17:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1704 transitions. [2022-01-19 07:17:57,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2022-01-19 07:17:57,735 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1704 transitions. [2022-01-19 07:17:57,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1704 transitions. [2022-01-19 07:17:57,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:17:57,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1704 transitions. [2022-01-19 07:17:57,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.66666666666667) internal successors, (1704), 18 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) [2022-01-19 07:17:57,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:57,738 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:57,738 INFO L186 Difference]: Start difference. First operand has 568 places, 502 transitions, 7500 flow. Second operand 18 states and 1704 transitions. [2022-01-19 07:17:57,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 540 transitions, 8691 flow [2022-01-19 07:17:58,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 540 transitions, 8452 flow, removed 91 selfloop flow, removed 4 redundant places. [2022-01-19 07:17:58,179 INFO L242 Difference]: Finished difference. Result has 584 places, 509 transitions, 7736 flow [2022-01-19 07:17:58,179 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7285, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7736, PETRI_PLACES=584, PETRI_TRANSITIONS=509} [2022-01-19 07:17:58,180 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 472 predicate places. [2022-01-19 07:17:58,180 INFO L470 AbstractCegarLoop]: Abstraction has has 584 places, 509 transitions, 7736 flow [2022-01-19 07:17:58,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:58,180 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:17:58,180 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:17:58,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 07:17:58,180 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:17:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:17:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash -238388428, now seen corresponding path program 14 times [2022-01-19 07:17:58,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:17:58,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297069609] [2022-01-19 07:17:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:17:58,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:17:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:17:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:17:58,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:17:58,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297069609] [2022-01-19 07:17:58,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297069609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:17:58,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:17:58,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:17:58,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284727698] [2022-01-19 07:17:58,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:17:58,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:17:58,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:17:58,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:17:58,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:17:58,251 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:17:58,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 509 transitions, 7736 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:17:58,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:17:58,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:17:58,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:00,043 INFO L129 PetriNetUnfolder]: 2314/7189 cut-off events. [2022-01-19 07:18:00,043 INFO L130 PetriNetUnfolder]: For 65052/65261 co-relation queries the response was YES. [2022-01-19 07:18:00,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38786 conditions, 7189 events. 2314/7189 cut-off events. For 65052/65261 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 84179 event pairs, 546 based on Foata normal form. 12/7076 useless extension candidates. Maximal degree in co-relation 38598. Up to 2400 conditions per place. [2022-01-19 07:18:00,179 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 256 selfloop transitions, 156 changer transitions 23/578 dead transitions. [2022-01-19 07:18:00,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 578 transitions, 9355 flow [2022-01-19 07:18:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:18:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:18:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2069 transitions. [2022-01-19 07:18:00,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584310850439883 [2022-01-19 07:18:00,180 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2069 transitions. [2022-01-19 07:18:00,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2069 transitions. [2022-01-19 07:18:00,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:00,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2069 transitions. [2022-01-19 07:18:00,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.04545454545455) internal successors, (2069), 22 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:00,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:00,183 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:00,183 INFO L186 Difference]: Start difference. First operand has 584 places, 509 transitions, 7736 flow. Second operand 22 states and 2069 transitions. [2022-01-19 07:18:00,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 578 transitions, 9355 flow [2022-01-19 07:18:00,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 578 transitions, 9196 flow, removed 66 selfloop flow, removed 8 redundant places. [2022-01-19 07:18:00,733 INFO L242 Difference]: Finished difference. Result has 609 places, 537 transitions, 8448 flow [2022-01-19 07:18:00,733 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8448, PETRI_PLACES=609, PETRI_TRANSITIONS=537} [2022-01-19 07:18:00,734 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 497 predicate places. [2022-01-19 07:18:00,734 INFO L470 AbstractCegarLoop]: Abstraction has has 609 places, 537 transitions, 8448 flow [2022-01-19 07:18:00,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:00,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:00,734 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:00,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 07:18:00,734 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:00,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:00,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1075834156, now seen corresponding path program 15 times [2022-01-19 07:18:00,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:00,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675700557] [2022-01-19 07:18:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:00,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:00,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:00,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675700557] [2022-01-19 07:18:00,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675700557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:00,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:00,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:00,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142851550] [2022-01-19 07:18:00,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:00,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:00,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:00,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:00,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:00,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 537 transitions, 8448 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:00,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:00,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:00,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:02,798 INFO L129 PetriNetUnfolder]: 2389/7470 cut-off events. [2022-01-19 07:18:02,798 INFO L130 PetriNetUnfolder]: For 70964/71173 co-relation queries the response was YES. [2022-01-19 07:18:02,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41656 conditions, 7470 events. 2389/7470 cut-off events. For 70964/71173 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 88349 event pairs, 557 based on Foata normal form. 9/7347 useless extension candidates. Maximal degree in co-relation 41461. Up to 2475 conditions per place. [2022-01-19 07:18:02,942 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 327 selfloop transitions, 110 changer transitions 21/601 dead transitions. [2022-01-19 07:18:02,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 601 transitions, 10233 flow [2022-01-19 07:18:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:18:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:18:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1979 transitions. [2022-01-19 07:18:02,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599846390168971 [2022-01-19 07:18:02,944 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1979 transitions. [2022-01-19 07:18:02,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1979 transitions. [2022-01-19 07:18:02,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:02,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1979 transitions. [2022-01-19 07:18:02,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.23809523809524) internal successors, (1979), 21 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:02,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:02,947 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:02,947 INFO L186 Difference]: Start difference. First operand has 609 places, 537 transitions, 8448 flow. Second operand 21 states and 1979 transitions. [2022-01-19 07:18:02,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 601 transitions, 10233 flow [2022-01-19 07:18:03,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 601 transitions, 10143 flow, removed 45 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:03,556 INFO L242 Difference]: Finished difference. Result has 639 places, 563 transitions, 9272 flow [2022-01-19 07:18:03,557 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8360, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9272, PETRI_PLACES=639, PETRI_TRANSITIONS=563} [2022-01-19 07:18:03,557 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 527 predicate places. [2022-01-19 07:18:03,557 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 563 transitions, 9272 flow [2022-01-19 07:18:03,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:03,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:03,557 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:03,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 07:18:03,557 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:03,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash -537173466, now seen corresponding path program 16 times [2022-01-19 07:18:03,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:03,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600577563] [2022-01-19 07:18:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:03,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:03,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600577563] [2022-01-19 07:18:03,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600577563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:03,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:03,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:03,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647843811] [2022-01-19 07:18:03,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:03,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:03,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:03,642 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:03,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 563 transitions, 9272 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:03,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:03,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:03,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:05,771 INFO L129 PetriNetUnfolder]: 2390/7539 cut-off events. [2022-01-19 07:18:05,771 INFO L130 PetriNetUnfolder]: For 78318/78530 co-relation queries the response was YES. [2022-01-19 07:18:05,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43147 conditions, 7539 events. 2390/7539 cut-off events. For 78318/78530 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 89038 event pairs, 557 based on Foata normal form. 12/7424 useless extension candidates. Maximal degree in co-relation 42939. Up to 2577 conditions per place. [2022-01-19 07:18:05,902 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 273 selfloop transitions, 166 changer transitions 23/605 dead transitions. [2022-01-19 07:18:05,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 605 transitions, 10624 flow [2022-01-19 07:18:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:18:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:18:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-01-19 07:18:05,904 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-01-19 07:18:05,904 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-01-19 07:18:05,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-01-19 07:18:05,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:05,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-01-19 07:18:05,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:05,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:05,908 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:05,908 INFO L186 Difference]: Start difference. First operand has 639 places, 563 transitions, 9272 flow. Second operand 18 states and 1699 transitions. [2022-01-19 07:18:05,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 605 transitions, 10624 flow [2022-01-19 07:18:06,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 605 transitions, 10414 flow, removed 105 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:06,575 INFO L242 Difference]: Finished difference. Result has 659 places, 572 transitions, 9629 flow [2022-01-19 07:18:06,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9064, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9629, PETRI_PLACES=659, PETRI_TRANSITIONS=572} [2022-01-19 07:18:06,576 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 547 predicate places. [2022-01-19 07:18:06,576 INFO L470 AbstractCegarLoop]: Abstraction has has 659 places, 572 transitions, 9629 flow [2022-01-19 07:18:06,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:06,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:06,576 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:06,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 07:18:06,576 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:06,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 260532618, now seen corresponding path program 17 times [2022-01-19 07:18:06,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:06,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164351196] [2022-01-19 07:18:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:06,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:06,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:06,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164351196] [2022-01-19 07:18:06,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164351196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:06,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:06,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:06,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53210870] [2022-01-19 07:18:06,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:06,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:06,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:06,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:06,656 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:06,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 572 transitions, 9629 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:06,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:06,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:06,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:08,929 INFO L129 PetriNetUnfolder]: 2508/7920 cut-off events. [2022-01-19 07:18:08,929 INFO L130 PetriNetUnfolder]: For 84985/85197 co-relation queries the response was YES. [2022-01-19 07:18:09,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46478 conditions, 7920 events. 2508/7920 cut-off events. For 84985/85197 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 95020 event pairs, 581 based on Foata normal form. 9/7785 useless extension candidates. Maximal degree in co-relation 46264. Up to 2659 conditions per place. [2022-01-19 07:18:09,057 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 331 selfloop transitions, 135 changer transitions 16/625 dead transitions. [2022-01-19 07:18:09,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 625 transitions, 11329 flow [2022-01-19 07:18:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:18:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:18:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1609 transitions. [2022-01-19 07:18:09,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632827324478179 [2022-01-19 07:18:09,059 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1609 transitions. [2022-01-19 07:18:09,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1609 transitions. [2022-01-19 07:18:09,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:09,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1609 transitions. [2022-01-19 07:18:09,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.6470588235294) internal successors, (1609), 17 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:09,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:09,063 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:09,063 INFO L186 Difference]: Start difference. First operand has 659 places, 572 transitions, 9629 flow. Second operand 17 states and 1609 transitions. [2022-01-19 07:18:09,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 625 transitions, 11329 flow [2022-01-19 07:18:09,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 625 transitions, 11077 flow, removed 48 selfloop flow, removed 6 redundant places. [2022-01-19 07:18:09,759 INFO L242 Difference]: Finished difference. Result has 675 places, 594 transitions, 10233 flow [2022-01-19 07:18:09,759 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9391, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10233, PETRI_PLACES=675, PETRI_TRANSITIONS=594} [2022-01-19 07:18:09,760 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 563 predicate places. [2022-01-19 07:18:09,760 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 594 transitions, 10233 flow [2022-01-19 07:18:09,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:09,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:09,761 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:09,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 07:18:09,761 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash -718975862, now seen corresponding path program 18 times [2022-01-19 07:18:09,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:09,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021301277] [2022-01-19 07:18:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:09,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:09,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:09,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021301277] [2022-01-19 07:18:09,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021301277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:09,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:09,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:09,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801254755] [2022-01-19 07:18:09,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:09,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:09,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:09,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:09,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 594 transitions, 10233 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:09,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:09,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:09,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:12,288 INFO L129 PetriNetUnfolder]: 2590/8147 cut-off events. [2022-01-19 07:18:12,288 INFO L130 PetriNetUnfolder]: For 92177/92385 co-relation queries the response was YES. [2022-01-19 07:18:12,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49479 conditions, 8147 events. 2590/8147 cut-off events. For 92177/92385 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 97916 event pairs, 597 based on Foata normal form. 9/8012 useless extension candidates. Maximal degree in co-relation 49260. Up to 2754 conditions per place. [2022-01-19 07:18:12,703 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 357 selfloop transitions, 130 changer transitions 17/647 dead transitions. [2022-01-19 07:18:12,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 647 transitions, 11998 flow [2022-01-19 07:18:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:18:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:18:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2022-01-19 07:18:12,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2022-01-19 07:18:12,705 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2022-01-19 07:18:12,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2022-01-19 07:18:12,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:12,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2022-01-19 07:18:12,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:12,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:12,708 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:12,708 INFO L186 Difference]: Start difference. First operand has 675 places, 594 transitions, 10233 flow. Second operand 17 states and 1613 transitions. [2022-01-19 07:18:12,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 647 transitions, 11998 flow [2022-01-19 07:18:13,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 647 transitions, 11818 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:13,588 INFO L242 Difference]: Finished difference. Result has 695 places, 616 transitions, 10914 flow [2022-01-19 07:18:13,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10059, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10914, PETRI_PLACES=695, PETRI_TRANSITIONS=616} [2022-01-19 07:18:13,589 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 583 predicate places. [2022-01-19 07:18:13,589 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 616 transitions, 10914 flow [2022-01-19 07:18:13,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:13,589 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:13,589 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:13,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 07:18:13,589 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash -2127790576, now seen corresponding path program 19 times [2022-01-19 07:18:13,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:13,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538570794] [2022-01-19 07:18:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:13,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:13,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:13,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538570794] [2022-01-19 07:18:13,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538570794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:13,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:13,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:13,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158540652] [2022-01-19 07:18:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:13,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:13,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:13,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:13,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:13,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:13,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 616 transitions, 10914 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:13,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:13,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:13,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:16,500 INFO L129 PetriNetUnfolder]: 2604/8307 cut-off events. [2022-01-19 07:18:16,500 INFO L130 PetriNetUnfolder]: For 96572/96780 co-relation queries the response was YES. [2022-01-19 07:18:16,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50823 conditions, 8307 events. 2604/8307 cut-off events. For 96572/96780 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 100697 event pairs, 595 based on Foata normal form. 9/8172 useless extension candidates. Maximal degree in co-relation 50597. Up to 2768 conditions per place. [2022-01-19 07:18:16,669 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 354 selfloop transitions, 135 changer transitions 21/653 dead transitions. [2022-01-19 07:18:16,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 653 transitions, 12363 flow [2022-01-19 07:18:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:18:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:18:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-01-19 07:18:16,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-01-19 07:18:16,671 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-01-19 07:18:16,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-01-19 07:18:16,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:16,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-01-19 07:18:16,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 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) [2022-01-19 07:18:16,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:16,675 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:16,675 INFO L186 Difference]: Start difference. First operand has 695 places, 616 transitions, 10914 flow. Second operand 18 states and 1703 transitions. [2022-01-19 07:18:16,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 653 transitions, 12363 flow [2022-01-19 07:18:17,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 653 transitions, 12089 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-01-19 07:18:17,548 INFO L242 Difference]: Finished difference. Result has 711 places, 625 transitions, 11201 flow [2022-01-19 07:18:17,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10674, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11201, PETRI_PLACES=711, PETRI_TRANSITIONS=625} [2022-01-19 07:18:17,549 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 599 predicate places. [2022-01-19 07:18:17,549 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 625 transitions, 11201 flow [2022-01-19 07:18:17,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:17,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:17,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:17,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 07:18:17,549 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:17,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1827453946, now seen corresponding path program 20 times [2022-01-19 07:18:17,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:17,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648729446] [2022-01-19 07:18:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:17,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:17,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648729446] [2022-01-19 07:18:17,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648729446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:17,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:17,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:17,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79928623] [2022-01-19 07:18:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:17,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:17,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:17,625 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:17,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 625 transitions, 11201 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:17,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:17,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:17,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:20,450 INFO L129 PetriNetUnfolder]: 2604/8307 cut-off events. [2022-01-19 07:18:20,451 INFO L130 PetriNetUnfolder]: For 97908/98116 co-relation queries the response was YES. [2022-01-19 07:18:20,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50610 conditions, 8307 events. 2604/8307 cut-off events. For 97908/98116 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 100661 event pairs, 593 based on Foata normal form. 9/8176 useless extension candidates. Maximal degree in co-relation 50382. Up to 2787 conditions per place. [2022-01-19 07:18:20,704 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 73 selfloop transitions, 0 changer transitions 477/659 dead transitions. [2022-01-19 07:18:20,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 659 transitions, 12525 flow [2022-01-19 07:18:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:18:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:18:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-01-19 07:18:20,706 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-01-19 07:18:20,706 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-01-19 07:18:20,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-01-19 07:18:20,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:20,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-01-19 07:18:20,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 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) [2022-01-19 07:18:20,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:20,708 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:20,709 INFO L186 Difference]: Start difference. First operand has 711 places, 625 transitions, 11201 flow. Second operand 18 states and 1703 transitions. [2022-01-19 07:18:20,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 659 transitions, 12525 flow [2022-01-19 07:18:21,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 659 transitions, 12327 flow, removed 66 selfloop flow, removed 17 redundant places. [2022-01-19 07:18:21,514 INFO L242 Difference]: Finished difference. Result has 712 places, 182 transitions, 1659 flow [2022-01-19 07:18:21,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11005, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1659, PETRI_PLACES=712, PETRI_TRANSITIONS=182} [2022-01-19 07:18:21,515 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 600 predicate places. [2022-01-19 07:18:21,515 INFO L470 AbstractCegarLoop]: Abstraction has has 712 places, 182 transitions, 1659 flow [2022-01-19 07:18:21,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:21,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:21,515 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:21,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 07:18:21,515 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash -579562400, now seen corresponding path program 3 times [2022-01-19 07:18:21,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:21,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475804737] [2022-01-19 07:18:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:21,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:21,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:21,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475804737] [2022-01-19 07:18:21,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475804737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:21,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:21,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:21,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282197397] [2022-01-19 07:18:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:21,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:21,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:21,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:21,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:21,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:21,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 182 transitions, 1659 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:21,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:21,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:21,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:22,303 INFO L129 PetriNetUnfolder]: 791/2407 cut-off events. [2022-01-19 07:18:22,304 INFO L130 PetriNetUnfolder]: For 7505/7582 co-relation queries the response was YES. [2022-01-19 07:18:22,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9277 conditions, 2407 events. 791/2407 cut-off events. For 7505/7582 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 22332 event pairs, 104 based on Foata normal form. 6/2373 useless extension candidates. Maximal degree in co-relation 9062. Up to 494 conditions per place. [2022-01-19 07:18:22,347 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 82 selfloop transitions, 51 changer transitions 24/266 dead transitions. [2022-01-19 07:18:22,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 266 transitions, 2600 flow [2022-01-19 07:18:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:18:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:18:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2065 transitions. [2022-01-19 07:18:22,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7569648093841642 [2022-01-19 07:18:22,349 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2065 transitions. [2022-01-19 07:18:22,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2065 transitions. [2022-01-19 07:18:22,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:22,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2065 transitions. [2022-01-19 07:18:22,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.86363636363636) internal successors, (2065), 22 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:22,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:22,351 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:22,352 INFO L186 Difference]: Start difference. First operand has 712 places, 182 transitions, 1659 flow. Second operand 22 states and 2065 transitions. [2022-01-19 07:18:22,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 266 transitions, 2600 flow [2022-01-19 07:18:22,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 266 transitions, 2353 flow, removed 60 selfloop flow, removed 40 redundant places. [2022-01-19 07:18:22,400 INFO L242 Difference]: Finished difference. Result has 394 places, 213 transitions, 1943 flow [2022-01-19 07:18:22,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1943, PETRI_PLACES=394, PETRI_TRANSITIONS=213} [2022-01-19 07:18:22,400 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 282 predicate places. [2022-01-19 07:18:22,400 INFO L470 AbstractCegarLoop]: Abstraction has has 394 places, 213 transitions, 1943 flow [2022-01-19 07:18:22,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:22,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:22,400 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:22,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 07:18:22,401 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:22,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1573834650, now seen corresponding path program 4 times [2022-01-19 07:18:22,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:22,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732890752] [2022-01-19 07:18:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:22,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:22,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:22,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732890752] [2022-01-19 07:18:22,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732890752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:22,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:22,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:22,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56778964] [2022-01-19 07:18:22,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:22,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:22,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:22,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:22,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 213 transitions, 1943 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:22,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:22,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:22,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:23,347 INFO L129 PetriNetUnfolder]: 1037/3129 cut-off events. [2022-01-19 07:18:23,347 INFO L130 PetriNetUnfolder]: For 18491/18574 co-relation queries the response was YES. [2022-01-19 07:18:23,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14533 conditions, 3129 events. 1037/3129 cut-off events. For 18491/18574 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 30448 event pairs, 192 based on Foata normal form. 5/3089 useless extension candidates. Maximal degree in co-relation 14335. Up to 744 conditions per place. [2022-01-19 07:18:23,438 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 106 selfloop transitions, 55 changer transitions 23/293 dead transitions. [2022-01-19 07:18:23,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 293 transitions, 3057 flow [2022-01-19 07:18:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:18:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:18:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1976 transitions. [2022-01-19 07:18:23,441 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588325652841782 [2022-01-19 07:18:23,441 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1976 transitions. [2022-01-19 07:18:23,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1976 transitions. [2022-01-19 07:18:23,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:23,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1976 transitions. [2022-01-19 07:18:23,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.0952380952381) internal successors, (1976), 21 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:23,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:23,624 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:23,624 INFO L186 Difference]: Start difference. First operand has 394 places, 213 transitions, 1943 flow. Second operand 21 states and 1976 transitions. [2022-01-19 07:18:23,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 293 transitions, 3057 flow [2022-01-19 07:18:23,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 293 transitions, 2845 flow, removed 106 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:23,834 INFO L242 Difference]: Finished difference. Result has 425 places, 244 transitions, 2355 flow [2022-01-19 07:18:23,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2355, PETRI_PLACES=425, PETRI_TRANSITIONS=244} [2022-01-19 07:18:23,834 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 313 predicate places. [2022-01-19 07:18:23,835 INFO L470 AbstractCegarLoop]: Abstraction has has 425 places, 244 transitions, 2355 flow [2022-01-19 07:18:23,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:23,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:23,835 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:23,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 07:18:23,835 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash -462960196, now seen corresponding path program 5 times [2022-01-19 07:18:23,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:23,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611565231] [2022-01-19 07:18:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:23,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:23,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:23,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611565231] [2022-01-19 07:18:23,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611565231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:23,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:23,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:23,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278502117] [2022-01-19 07:18:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:23,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:23,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:23,927 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:23,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 244 transitions, 2355 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:23,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:23,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:23,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:24,863 INFO L129 PetriNetUnfolder]: 1103/3382 cut-off events. [2022-01-19 07:18:24,863 INFO L130 PetriNetUnfolder]: For 30184/30271 co-relation queries the response was YES. [2022-01-19 07:18:24,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17329 conditions, 3382 events. 1103/3382 cut-off events. For 30184/30271 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 33707 event pairs, 172 based on Foata normal form. 2/3353 useless extension candidates. Maximal degree in co-relation 17117. Up to 1080 conditions per place. [2022-01-19 07:18:24,919 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 121 selfloop transitions, 65 changer transitions 22/317 dead transitions. [2022-01-19 07:18:24,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 317 transitions, 3551 flow [2022-01-19 07:18:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:18:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:18:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1883 transitions. [2022-01-19 07:18:24,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592741935483871 [2022-01-19 07:18:24,920 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1883 transitions. [2022-01-19 07:18:24,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1883 transitions. [2022-01-19 07:18:24,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:24,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1883 transitions. [2022-01-19 07:18:24,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.15) internal successors, (1883), 20 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:24,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:24,922 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:24,922 INFO L186 Difference]: Start difference. First operand has 425 places, 244 transitions, 2355 flow. Second operand 20 states and 1883 transitions. [2022-01-19 07:18:24,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 317 transitions, 3551 flow [2022-01-19 07:18:25,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 317 transitions, 3345 flow, removed 103 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:25,103 INFO L242 Difference]: Finished difference. Result has 455 places, 275 transitions, 2852 flow [2022-01-19 07:18:25,103 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2852, PETRI_PLACES=455, PETRI_TRANSITIONS=275} [2022-01-19 07:18:25,103 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 343 predicate places. [2022-01-19 07:18:25,103 INFO L470 AbstractCegarLoop]: Abstraction has has 455 places, 275 transitions, 2852 flow [2022-01-19 07:18:25,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:25,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:25,104 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:25,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 07:18:25,104 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:25,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash 158013750, now seen corresponding path program 6 times [2022-01-19 07:18:25,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:25,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153649825] [2022-01-19 07:18:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:25,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:25,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:25,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153649825] [2022-01-19 07:18:25,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153649825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:25,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:25,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:25,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588938516] [2022-01-19 07:18:25,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:25,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:25,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:25,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:25,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 275 transitions, 2852 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:25,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:25,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:25,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:26,359 INFO L129 PetriNetUnfolder]: 1193/3768 cut-off events. [2022-01-19 07:18:26,360 INFO L130 PetriNetUnfolder]: For 41544/41656 co-relation queries the response was YES. [2022-01-19 07:18:26,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20067 conditions, 3768 events. 1193/3768 cut-off events. For 41544/41656 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 39248 event pairs, 45 based on Foata normal form. 8/3757 useless extension candidates. Maximal degree in co-relation 19841. Up to 569 conditions per place. [2022-01-19 07:18:26,426 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 124 selfloop transitions, 112 changer transitions 27/372 dead transitions. [2022-01-19 07:18:26,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 372 transitions, 4226 flow [2022-01-19 07:18:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:18:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:18:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2246 transitions. [2022-01-19 07:18:26,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547043010752689 [2022-01-19 07:18:26,427 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2246 transitions. [2022-01-19 07:18:26,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2246 transitions. [2022-01-19 07:18:26,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:26,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2246 transitions. [2022-01-19 07:18:26,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 93.58333333333333) internal successors, (2246), 24 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) [2022-01-19 07:18:26,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:26,430 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:26,430 INFO L186 Difference]: Start difference. First operand has 455 places, 275 transitions, 2852 flow. Second operand 24 states and 2246 transitions. [2022-01-19 07:18:26,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 372 transitions, 4226 flow [2022-01-19 07:18:26,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 372 transitions, 3874 flow, removed 176 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:26,704 INFO L242 Difference]: Finished difference. Result has 492 places, 300 transitions, 3244 flow [2022-01-19 07:18:26,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3244, PETRI_PLACES=492, PETRI_TRANSITIONS=300} [2022-01-19 07:18:26,704 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 380 predicate places. [2022-01-19 07:18:26,704 INFO L470 AbstractCegarLoop]: Abstraction has has 492 places, 300 transitions, 3244 flow [2022-01-19 07:18:26,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:26,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:26,704 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:26,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 07:18:26,705 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash 16277834, now seen corresponding path program 7 times [2022-01-19 07:18:26,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:26,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972088310] [2022-01-19 07:18:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:26,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:26,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:26,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972088310] [2022-01-19 07:18:26,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972088310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:26,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:26,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:26,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139814254] [2022-01-19 07:18:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:26,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:26,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:26,780 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:26,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 300 transitions, 3244 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:26,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:26,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:26,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:28,096 INFO L129 PetriNetUnfolder]: 1247/3899 cut-off events. [2022-01-19 07:18:28,097 INFO L130 PetriNetUnfolder]: For 47451/47560 co-relation queries the response was YES. [2022-01-19 07:18:28,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22130 conditions, 3899 events. 1247/3899 cut-off events. For 47451/47560 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 40405 event pairs, 162 based on Foata normal form. 12/3866 useless extension candidates. Maximal degree in co-relation 21887. Up to 994 conditions per place. [2022-01-19 07:18:28,168 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 135 selfloop transitions, 95 changer transitions 14/353 dead transitions. [2022-01-19 07:18:28,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 353 transitions, 4391 flow [2022-01-19 07:18:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:18:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:18:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1508 transitions. [2022-01-19 07:18:28,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-01-19 07:18:28,169 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1508 transitions. [2022-01-19 07:18:28,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1508 transitions. [2022-01-19 07:18:28,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:28,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1508 transitions. [2022-01-19 07:18:28,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.25) internal successors, (1508), 16 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:28,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:28,172 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:28,172 INFO L186 Difference]: Start difference. First operand has 492 places, 300 transitions, 3244 flow. Second operand 16 states and 1508 transitions. [2022-01-19 07:18:28,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 353 transitions, 4391 flow [2022-01-19 07:18:28,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 353 transitions, 4159 flow, removed 20 selfloop flow, removed 7 redundant places. [2022-01-19 07:18:28,454 INFO L242 Difference]: Finished difference. Result has 506 places, 317 transitions, 3553 flow [2022-01-19 07:18:28,455 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3553, PETRI_PLACES=506, PETRI_TRANSITIONS=317} [2022-01-19 07:18:28,455 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 394 predicate places. [2022-01-19 07:18:28,455 INFO L470 AbstractCegarLoop]: Abstraction has has 506 places, 317 transitions, 3553 flow [2022-01-19 07:18:28,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:28,455 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:28,455 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:28,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 07:18:28,455 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:28,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1613740250, now seen corresponding path program 8 times [2022-01-19 07:18:28,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:28,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732491107] [2022-01-19 07:18:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:28,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:28,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:28,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732491107] [2022-01-19 07:18:28,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732491107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:28,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:28,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:28,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826528406] [2022-01-19 07:18:28,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:28,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:28,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:28,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:28,526 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:28,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 317 transitions, 3553 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:28,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:28,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:28,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:29,892 INFO L129 PetriNetUnfolder]: 1323/4311 cut-off events. [2022-01-19 07:18:29,892 INFO L130 PetriNetUnfolder]: For 57854/57963 co-relation queries the response was YES. [2022-01-19 07:18:30,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24864 conditions, 4311 events. 1323/4311 cut-off events. For 57854/57963 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 46682 event pairs, 183 based on Foata normal form. 7/4264 useless extension candidates. Maximal degree in co-relation 24615. Up to 1068 conditions per place. [2022-01-19 07:18:30,144 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 155 selfloop transitions, 105 changer transitions 19/388 dead transitions. [2022-01-19 07:18:30,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 388 transitions, 4968 flow [2022-01-19 07:18:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:18:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:18:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1879 transitions. [2022-01-19 07:18:30,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7576612903225807 [2022-01-19 07:18:30,145 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1879 transitions. [2022-01-19 07:18:30,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1879 transitions. [2022-01-19 07:18:30,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:30,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1879 transitions. [2022-01-19 07:18:30,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 93.95) internal successors, (1879), 20 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:30,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:30,148 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:30,148 INFO L186 Difference]: Start difference. First operand has 506 places, 317 transitions, 3553 flow. Second operand 20 states and 1879 transitions. [2022-01-19 07:18:30,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 388 transitions, 4968 flow [2022-01-19 07:18:30,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 388 transitions, 4794 flow, removed 66 selfloop flow, removed 3 redundant places. [2022-01-19 07:18:30,476 INFO L242 Difference]: Finished difference. Result has 534 places, 349 transitions, 4351 flow [2022-01-19 07:18:30,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4351, PETRI_PLACES=534, PETRI_TRANSITIONS=349} [2022-01-19 07:18:30,476 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 422 predicate places. [2022-01-19 07:18:30,476 INFO L470 AbstractCegarLoop]: Abstraction has has 534 places, 349 transitions, 4351 flow [2022-01-19 07:18:30,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:30,476 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:30,476 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:30,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 07:18:30,477 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:30,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash -279606758, now seen corresponding path program 9 times [2022-01-19 07:18:30,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:30,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854629341] [2022-01-19 07:18:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:30,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:30,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:30,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854629341] [2022-01-19 07:18:30,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854629341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:30,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:30,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:30,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843174086] [2022-01-19 07:18:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:30,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:30,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:30,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:30,547 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:30,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 349 transitions, 4351 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:30,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:30,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:30,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:31,899 INFO L129 PetriNetUnfolder]: 1315/4354 cut-off events. [2022-01-19 07:18:31,900 INFO L130 PetriNetUnfolder]: For 59673/59785 co-relation queries the response was YES. [2022-01-19 07:18:31,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26068 conditions, 4354 events. 1315/4354 cut-off events. For 59673/59785 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 47648 event pairs, 144 based on Foata normal form. 16/4337 useless extension candidates. Maximal degree in co-relation 25807. Up to 1056 conditions per place. [2022-01-19 07:18:32,007 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 150 selfloop transitions, 116 changer transitions 23/398 dead transitions. [2022-01-19 07:18:32,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 398 transitions, 5612 flow [2022-01-19 07:18:32,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:18:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:18:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 07:18:32,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 07:18:32,008 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 07:18:32,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 07:18:32,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:32,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 07:18:32,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:32,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:32,011 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:32,011 INFO L186 Difference]: Start difference. First operand has 534 places, 349 transitions, 4351 flow. Second operand 18 states and 1693 transitions. [2022-01-19 07:18:32,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 398 transitions, 5612 flow [2022-01-19 07:18:32,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 398 transitions, 5168 flow, removed 222 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:32,674 INFO L242 Difference]: Finished difference. Result has 554 places, 358 transitions, 4547 flow [2022-01-19 07:18:32,674 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4105, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4547, PETRI_PLACES=554, PETRI_TRANSITIONS=358} [2022-01-19 07:18:32,675 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 442 predicate places. [2022-01-19 07:18:32,675 INFO L470 AbstractCegarLoop]: Abstraction has has 554 places, 358 transitions, 4547 flow [2022-01-19 07:18:32,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:32,675 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:32,675 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:32,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 07:18:32,675 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1098363170, now seen corresponding path program 10 times [2022-01-19 07:18:32,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:32,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232499501] [2022-01-19 07:18:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:32,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:32,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:32,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232499501] [2022-01-19 07:18:32,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232499501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:32,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:32,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:32,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493407001] [2022-01-19 07:18:32,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:32,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:32,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:32,753 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:32,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 358 transitions, 4547 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:32,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:32,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:32,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:34,181 INFO L129 PetriNetUnfolder]: 1429/4760 cut-off events. [2022-01-19 07:18:34,181 INFO L130 PetriNetUnfolder]: For 43464/43576 co-relation queries the response was YES. [2022-01-19 07:18:34,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27630 conditions, 4760 events. 1429/4760 cut-off events. For 43464/43576 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 53226 event pairs, 178 based on Foata normal form. 10/4733 useless extension candidates. Maximal degree in co-relation 27363. Up to 1156 conditions per place. [2022-01-19 07:18:34,281 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 174 selfloop transitions, 116 changer transitions 16/415 dead transitions. [2022-01-19 07:18:34,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 415 transitions, 5841 flow [2022-01-19 07:18:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:18:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:18:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1604 transitions. [2022-01-19 07:18:34,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609108159392789 [2022-01-19 07:18:34,283 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1604 transitions. [2022-01-19 07:18:34,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1604 transitions. [2022-01-19 07:18:34,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:34,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1604 transitions. [2022-01-19 07:18:34,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.3529411764706) internal successors, (1604), 17 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:34,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:34,285 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:34,285 INFO L186 Difference]: Start difference. First operand has 554 places, 358 transitions, 4547 flow. Second operand 17 states and 1604 transitions. [2022-01-19 07:18:34,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 415 transitions, 5841 flow [2022-01-19 07:18:34,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 415 transitions, 5657 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-01-19 07:18:34,869 INFO L242 Difference]: Finished difference. Result has 570 places, 380 transitions, 5119 flow [2022-01-19 07:18:34,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5119, PETRI_PLACES=570, PETRI_TRANSITIONS=380} [2022-01-19 07:18:34,869 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 458 predicate places. [2022-01-19 07:18:34,869 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 380 transitions, 5119 flow [2022-01-19 07:18:34,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:34,869 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:34,869 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:34,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 07:18:34,870 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:34,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:34,870 INFO L85 PathProgramCache]: Analyzing trace with hash -593310370, now seen corresponding path program 11 times [2022-01-19 07:18:34,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:34,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844066069] [2022-01-19 07:18:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:34,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:34,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:34,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844066069] [2022-01-19 07:18:34,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844066069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:34,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:34,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:34,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625549067] [2022-01-19 07:18:34,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:34,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:34,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:34,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:34,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 380 transitions, 5119 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:34,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:34,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:34,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:36,676 INFO L129 PetriNetUnfolder]: 1503/5139 cut-off events. [2022-01-19 07:18:36,676 INFO L130 PetriNetUnfolder]: For 49423/49532 co-relation queries the response was YES. [2022-01-19 07:18:36,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30555 conditions, 5139 events. 1503/5139 cut-off events. For 49423/49532 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 58854 event pairs, 194 based on Foata normal form. 7/5100 useless extension candidates. Maximal degree in co-relation 30283. Up to 1266 conditions per place. [2022-01-19 07:18:36,999 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 197 selfloop transitions, 112 changer transitions 15/433 dead transitions. [2022-01-19 07:18:37,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 433 transitions, 6434 flow [2022-01-19 07:18:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:18:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:18:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1604 transitions. [2022-01-19 07:18:37,001 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609108159392789 [2022-01-19 07:18:37,001 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1604 transitions. [2022-01-19 07:18:37,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1604 transitions. [2022-01-19 07:18:37,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:37,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1604 transitions. [2022-01-19 07:18:37,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.3529411764706) internal successors, (1604), 17 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:37,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:37,018 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:37,018 INFO L186 Difference]: Start difference. First operand has 570 places, 380 transitions, 5119 flow. Second operand 17 states and 1604 transitions. [2022-01-19 07:18:37,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 433 transitions, 6434 flow [2022-01-19 07:18:37,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 433 transitions, 6262 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:37,508 INFO L242 Difference]: Finished difference. Result has 590 places, 402 transitions, 5675 flow [2022-01-19 07:18:37,508 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5675, PETRI_PLACES=590, PETRI_TRANSITIONS=402} [2022-01-19 07:18:37,508 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 478 predicate places. [2022-01-19 07:18:37,508 INFO L470 AbstractCegarLoop]: Abstraction has has 590 places, 402 transitions, 5675 flow [2022-01-19 07:18:37,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:37,509 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:37,509 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:37,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 07:18:37,509 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:37,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:37,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1911279180, now seen corresponding path program 12 times [2022-01-19 07:18:37,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:37,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102522941] [2022-01-19 07:18:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:37,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:37,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:37,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102522941] [2022-01-19 07:18:37,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102522941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:37,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:37,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:37,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374357625] [2022-01-19 07:18:37,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:37,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:37,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:37,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:37,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:37,586 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:37,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 402 transitions, 5675 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:37,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:37,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:37,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:39,363 INFO L129 PetriNetUnfolder]: 1513/5279 cut-off events. [2022-01-19 07:18:39,364 INFO L130 PetriNetUnfolder]: For 51423/51534 co-relation queries the response was YES. [2022-01-19 07:18:39,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31770 conditions, 5279 events. 1513/5279 cut-off events. For 51423/51534 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 60886 event pairs, 204 based on Foata normal form. 7/5236 useless extension candidates. Maximal degree in co-relation 31491. Up to 1310 conditions per place. [2022-01-19 07:18:39,475 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 182 selfloop transitions, 130 changer transitions 20/441 dead transitions. [2022-01-19 07:18:39,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 441 transitions, 6714 flow [2022-01-19 07:18:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:18:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:18:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1694 transitions. [2022-01-19 07:18:39,476 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7589605734767025 [2022-01-19 07:18:39,476 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1694 transitions. [2022-01-19 07:18:39,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1694 transitions. [2022-01-19 07:18:39,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:39,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1694 transitions. [2022-01-19 07:18:39,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.11111111111111) internal successors, (1694), 18 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:39,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:39,478 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:39,478 INFO L186 Difference]: Start difference. First operand has 590 places, 402 transitions, 5675 flow. Second operand 18 states and 1694 transitions. [2022-01-19 07:18:39,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 441 transitions, 6714 flow [2022-01-19 07:18:39,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 441 transitions, 6517 flow, removed 72 selfloop flow, removed 3 redundant places. [2022-01-19 07:18:39,972 INFO L242 Difference]: Finished difference. Result has 607 places, 412 transitions, 5972 flow [2022-01-19 07:18:39,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5972, PETRI_PLACES=607, PETRI_TRANSITIONS=412} [2022-01-19 07:18:39,973 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 495 predicate places. [2022-01-19 07:18:39,973 INFO L470 AbstractCegarLoop]: Abstraction has has 607 places, 412 transitions, 5972 flow [2022-01-19 07:18:39,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:39,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:39,973 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:39,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 07:18:39,974 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:39,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash -426158626, now seen corresponding path program 13 times [2022-01-19 07:18:39,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:39,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627403361] [2022-01-19 07:18:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:39,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:40,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:40,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627403361] [2022-01-19 07:18:40,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627403361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:40,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:40,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:40,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502035554] [2022-01-19 07:18:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:40,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:40,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:40,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:40,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 412 transitions, 5972 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:40,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:40,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:40,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:42,114 INFO L129 PetriNetUnfolder]: 1507/5265 cut-off events. [2022-01-19 07:18:42,114 INFO L130 PetriNetUnfolder]: For 51138/51252 co-relation queries the response was YES. [2022-01-19 07:18:42,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31997 conditions, 5265 events. 1507/5265 cut-off events. For 51138/51252 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 60736 event pairs, 211 based on Foata normal form. 7/5224 useless extension candidates. Maximal degree in co-relation 31715. Up to 1290 conditions per place. [2022-01-19 07:18:42,218 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 196 selfloop transitions, 119 changer transitions 25/449 dead transitions. [2022-01-19 07:18:42,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 449 transitions, 6992 flow [2022-01-19 07:18:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:18:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:18:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1698 transitions. [2022-01-19 07:18:42,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 07:18:42,219 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1698 transitions. [2022-01-19 07:18:42,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1698 transitions. [2022-01-19 07:18:42,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:42,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1698 transitions. [2022-01-19 07:18:42,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.33333333333333) internal successors, (1698), 18 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:42,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:42,221 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:42,221 INFO L186 Difference]: Start difference. First operand has 607 places, 412 transitions, 5972 flow. Second operand 18 states and 1698 transitions. [2022-01-19 07:18:42,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 449 transitions, 6992 flow [2022-01-19 07:18:42,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 449 transitions, 6842 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-01-19 07:18:42,727 INFO L242 Difference]: Finished difference. Result has 620 places, 419 transitions, 6262 flow [2022-01-19 07:18:42,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5828, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6262, PETRI_PLACES=620, PETRI_TRANSITIONS=419} [2022-01-19 07:18:42,728 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 508 predicate places. [2022-01-19 07:18:42,728 INFO L470 AbstractCegarLoop]: Abstraction has has 620 places, 419 transitions, 6262 flow [2022-01-19 07:18:42,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:42,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:42,729 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:42,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 07:18:42,729 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:42,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1251488116, now seen corresponding path program 14 times [2022-01-19 07:18:42,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:42,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496087811] [2022-01-19 07:18:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:42,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:42,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:42,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496087811] [2022-01-19 07:18:42,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496087811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:42,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:42,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:42,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446722110] [2022-01-19 07:18:42,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:42,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:42,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:42,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:42,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 419 transitions, 6262 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:42,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:42,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:42,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:44,863 INFO L129 PetriNetUnfolder]: 1619/5708 cut-off events. [2022-01-19 07:18:44,864 INFO L130 PetriNetUnfolder]: For 58892/59003 co-relation queries the response was YES. [2022-01-19 07:18:44,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34628 conditions, 5708 events. 1619/5708 cut-off events. For 58892/59003 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 67264 event pairs, 164 based on Foata normal form. 8/5690 useless extension candidates. Maximal degree in co-relation 34347. Up to 1170 conditions per place. [2022-01-19 07:18:44,977 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 200 selfloop transitions, 156 changer transitions 23/488 dead transitions. [2022-01-19 07:18:44,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 488 transitions, 7744 flow [2022-01-19 07:18:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:18:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:18:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2063 transitions. [2022-01-19 07:18:44,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7562316715542522 [2022-01-19 07:18:44,978 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2063 transitions. [2022-01-19 07:18:44,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2063 transitions. [2022-01-19 07:18:44,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:44,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2063 transitions. [2022-01-19 07:18:44,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.77272727272727) internal successors, (2063), 22 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:44,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:44,981 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:44,981 INFO L186 Difference]: Start difference. First operand has 620 places, 419 transitions, 6262 flow. Second operand 22 states and 2063 transitions. [2022-01-19 07:18:44,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 488 transitions, 7744 flow [2022-01-19 07:18:45,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 488 transitions, 7589 flow, removed 64 selfloop flow, removed 8 redundant places. [2022-01-19 07:18:45,556 INFO L242 Difference]: Finished difference. Result has 645 places, 447 transitions, 6955 flow [2022-01-19 07:18:45,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6109, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6955, PETRI_PLACES=645, PETRI_TRANSITIONS=447} [2022-01-19 07:18:45,557 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 533 predicate places. [2022-01-19 07:18:45,557 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 447 transitions, 6955 flow [2022-01-19 07:18:45,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:45,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:45,557 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:45,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 07:18:45,557 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:45,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:45,557 INFO L85 PathProgramCache]: Analyzing trace with hash -646797606, now seen corresponding path program 15 times [2022-01-19 07:18:45,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:45,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408086198] [2022-01-19 07:18:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:45,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:45,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:45,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408086198] [2022-01-19 07:18:45,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408086198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:45,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:45,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:45,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018029251] [2022-01-19 07:18:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:45,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:45,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:45,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:45,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:45,643 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:45,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 447 transitions, 6955 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:45,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:45,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:45,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:47,945 INFO L129 PetriNetUnfolder]: 1687/5916 cut-off events. [2022-01-19 07:18:47,945 INFO L130 PetriNetUnfolder]: For 68955/69066 co-relation queries the response was YES. [2022-01-19 07:18:48,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37743 conditions, 5916 events. 1687/5916 cut-off events. For 68955/69066 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 69959 event pairs, 176 based on Foata normal form. 8/5889 useless extension candidates. Maximal degree in co-relation 37455. Up to 1862 conditions per place. [2022-01-19 07:18:48,069 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 271 selfloop transitions, 110 changer transitions 21/511 dead transitions. [2022-01-19 07:18:48,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 511 transitions, 8605 flow [2022-01-19 07:18:48,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:18:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:18:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1973 transitions. [2022-01-19 07:18:48,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7576804915514593 [2022-01-19 07:18:48,071 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1973 transitions. [2022-01-19 07:18:48,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1973 transitions. [2022-01-19 07:18:48,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:48,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1973 transitions. [2022-01-19 07:18:48,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.95238095238095) internal successors, (1973), 21 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) [2022-01-19 07:18:48,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:48,073 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:48,073 INFO L186 Difference]: Start difference. First operand has 645 places, 447 transitions, 6955 flow. Second operand 21 states and 1973 transitions. [2022-01-19 07:18:48,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 511 transitions, 8605 flow [2022-01-19 07:18:48,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 511 transitions, 8519 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:48,764 INFO L242 Difference]: Finished difference. Result has 675 places, 473 transitions, 7764 flow [2022-01-19 07:18:48,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6871, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7764, PETRI_PLACES=675, PETRI_TRANSITIONS=473} [2022-01-19 07:18:48,764 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 563 predicate places. [2022-01-19 07:18:48,764 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 473 transitions, 7764 flow [2022-01-19 07:18:48,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:48,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:48,765 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:48,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 07:18:48,765 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:48,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash 951166574, now seen corresponding path program 16 times [2022-01-19 07:18:48,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:48,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970429452] [2022-01-19 07:18:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:48,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:48,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:48,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970429452] [2022-01-19 07:18:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970429452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:48,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:48,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:48,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307705285] [2022-01-19 07:18:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:48,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:48,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:48,838 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:48,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 473 transitions, 7764 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:48,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:48,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:48,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:51,132 INFO L129 PetriNetUnfolder]: 1685/5872 cut-off events. [2022-01-19 07:18:51,132 INFO L130 PetriNetUnfolder]: For 76728/76836 co-relation queries the response was YES. [2022-01-19 07:18:51,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39310 conditions, 5872 events. 1685/5872 cut-off events. For 76728/76836 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 69042 event pairs, 180 based on Foata normal form. 8/5852 useless extension candidates. Maximal degree in co-relation 39009. Up to 1354 conditions per place. [2022-01-19 07:18:51,270 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 217 selfloop transitions, 166 changer transitions 23/515 dead transitions. [2022-01-19 07:18:51,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 515 transitions, 9000 flow [2022-01-19 07:18:51,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:18:51,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:18:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 07:18:51,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 07:18:51,271 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 07:18:51,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 07:18:51,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:51,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 07:18:51,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:51,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:51,273 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:51,273 INFO L186 Difference]: Start difference. First operand has 675 places, 473 transitions, 7764 flow. Second operand 18 states and 1693 transitions. [2022-01-19 07:18:51,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 515 transitions, 9000 flow [2022-01-19 07:18:52,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 515 transitions, 8790 flow, removed 105 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:52,308 INFO L242 Difference]: Finished difference. Result has 695 places, 482 transitions, 8121 flow [2022-01-19 07:18:52,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7556, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8121, PETRI_PLACES=695, PETRI_TRANSITIONS=482} [2022-01-19 07:18:52,309 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 583 predicate places. [2022-01-19 07:18:52,309 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 482 transitions, 8121 flow [2022-01-19 07:18:52,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:52,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:52,309 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:52,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 07:18:52,309 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:52,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2117309622, now seen corresponding path program 17 times [2022-01-19 07:18:52,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:52,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796812199] [2022-01-19 07:18:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:52,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:52,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:52,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796812199] [2022-01-19 07:18:52,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796812199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:52,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:52,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:52,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279236112] [2022-01-19 07:18:52,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:52,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:52,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:52,391 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:52,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 482 transitions, 8121 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:52,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:52,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:52,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:54,945 INFO L129 PetriNetUnfolder]: 1795/6394 cut-off events. [2022-01-19 07:18:54,946 INFO L130 PetriNetUnfolder]: For 84137/84245 co-relation queries the response was YES. [2022-01-19 07:18:55,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43076 conditions, 6394 events. 1795/6394 cut-off events. For 84137/84245 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 77068 event pairs, 200 based on Foata normal form. 8/6361 useless extension candidates. Maximal degree in co-relation 42769. Up to 1900 conditions per place. [2022-01-19 07:18:55,088 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 275 selfloop transitions, 135 changer transitions 16/535 dead transitions. [2022-01-19 07:18:55,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 535 transitions, 9679 flow [2022-01-19 07:18:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:18:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:18:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1603 transitions. [2022-01-19 07:18:55,089 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604364326375711 [2022-01-19 07:18:55,090 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1603 transitions. [2022-01-19 07:18:55,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1603 transitions. [2022-01-19 07:18:55,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:55,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1603 transitions. [2022-01-19 07:18:55,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.29411764705883) internal successors, (1603), 17 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:55,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:55,092 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:55,092 INFO L186 Difference]: Start difference. First operand has 695 places, 482 transitions, 8121 flow. Second operand 17 states and 1603 transitions. [2022-01-19 07:18:55,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 535 transitions, 9679 flow [2022-01-19 07:18:55,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 535 transitions, 9423 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-01-19 07:18:55,946 INFO L242 Difference]: Finished difference. Result has 711 places, 504 transitions, 8707 flow [2022-01-19 07:18:55,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7879, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8707, PETRI_PLACES=711, PETRI_TRANSITIONS=504} [2022-01-19 07:18:55,946 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 599 predicate places. [2022-01-19 07:18:55,946 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 504 transitions, 8707 flow [2022-01-19 07:18:55,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:55,946 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:55,947 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:55,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 07:18:55,947 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1896439110, now seen corresponding path program 18 times [2022-01-19 07:18:55,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:55,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869738731] [2022-01-19 07:18:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:55,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:56,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869738731] [2022-01-19 07:18:56,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869738731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:56,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:56,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:56,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499046305] [2022-01-19 07:18:56,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:56,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:56,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:56,023 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:56,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 504 transitions, 8707 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:56,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:56,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:56,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:18:58,500 INFO L129 PetriNetUnfolder]: 1869/6664 cut-off events. [2022-01-19 07:18:58,501 INFO L130 PetriNetUnfolder]: For 89616/89724 co-relation queries the response was YES. [2022-01-19 07:18:58,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46371 conditions, 6664 events. 1869/6664 cut-off events. For 89616/89724 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 81099 event pairs, 212 based on Foata normal form. 8/6631 useless extension candidates. Maximal degree in co-relation 46059. Up to 1932 conditions per place. [2022-01-19 07:18:58,659 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 301 selfloop transitions, 130 changer transitions 17/557 dead transitions. [2022-01-19 07:18:58,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 557 transitions, 10329 flow [2022-01-19 07:18:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:18:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:18:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1607 transitions. [2022-01-19 07:18:58,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623339658444023 [2022-01-19 07:18:58,661 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1607 transitions. [2022-01-19 07:18:58,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1607 transitions. [2022-01-19 07:18:58,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:18:58,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1607 transitions. [2022-01-19 07:18:58,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.52941176470588) internal successors, (1607), 17 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:58,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:58,663 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:58,663 INFO L186 Difference]: Start difference. First operand has 711 places, 504 transitions, 8707 flow. Second operand 17 states and 1607 transitions. [2022-01-19 07:18:58,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 557 transitions, 10329 flow [2022-01-19 07:18:59,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 557 transitions, 10143 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-01-19 07:18:59,892 INFO L242 Difference]: Finished difference. Result has 731 places, 526 transitions, 9356 flow [2022-01-19 07:18:59,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8527, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9356, PETRI_PLACES=731, PETRI_TRANSITIONS=526} [2022-01-19 07:18:59,893 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 619 predicate places. [2022-01-19 07:18:59,893 INFO L470 AbstractCegarLoop]: Abstraction has has 731 places, 526 transitions, 9356 flow [2022-01-19 07:18:59,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:59,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:18:59,893 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:18:59,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 07:18:59,893 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:18:59,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:18:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1402188288, now seen corresponding path program 19 times [2022-01-19 07:18:59,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:18:59,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166039606] [2022-01-19 07:18:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:18:59,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:18:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:18:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:18:59,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:18:59,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166039606] [2022-01-19 07:18:59,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166039606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:18:59,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:18:59,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:18:59,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484862019] [2022-01-19 07:18:59,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:18:59,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:18:59,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:18:59,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:18:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:18:59,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:18:59,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 526 transitions, 9356 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:18:59,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:18:59,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:18:59,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:02,633 INFO L129 PetriNetUnfolder]: 1879/6832 cut-off events. [2022-01-19 07:19:02,634 INFO L130 PetriNetUnfolder]: For 95799/95907 co-relation queries the response was YES. [2022-01-19 07:19:02,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47838 conditions, 6832 events. 1879/6832 cut-off events. For 95799/95907 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 83965 event pairs, 214 based on Foata normal form. 8/6797 useless extension candidates. Maximal degree in co-relation 47519. Up to 1990 conditions per place. [2022-01-19 07:19:02,791 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 298 selfloop transitions, 135 changer transitions 21/563 dead transitions. [2022-01-19 07:19:02,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 563 transitions, 10686 flow [2022-01-19 07:19:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1697 transitions. [2022-01-19 07:19:02,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603046594982079 [2022-01-19 07:19:02,792 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1697 transitions. [2022-01-19 07:19:02,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1697 transitions. [2022-01-19 07:19:02,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:02,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1697 transitions. [2022-01-19 07:19:02,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.27777777777777) internal successors, (1697), 18 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:02,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:02,795 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:02,795 INFO L186 Difference]: Start difference. First operand has 731 places, 526 transitions, 9356 flow. Second operand 18 states and 1697 transitions. [2022-01-19 07:19:02,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 563 transitions, 10686 flow [2022-01-19 07:19:03,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 563 transitions, 10412 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-01-19 07:19:03,908 INFO L242 Difference]: Finished difference. Result has 747 places, 535 transitions, 9642 flow [2022-01-19 07:19:03,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9116, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9642, PETRI_PLACES=747, PETRI_TRANSITIONS=535} [2022-01-19 07:19:03,909 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 635 predicate places. [2022-01-19 07:19:03,909 INFO L470 AbstractCegarLoop]: Abstraction has has 747 places, 535 transitions, 9642 flow [2022-01-19 07:19:03,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:03,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:03,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:03,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 07:19:03,909 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:19:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash -807038490, now seen corresponding path program 20 times [2022-01-19 07:19:03,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:03,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373716989] [2022-01-19 07:19:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:03,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:03,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:03,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373716989] [2022-01-19 07:19:03,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373716989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:03,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:03,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:03,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465885403] [2022-01-19 07:19:03,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:03,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:03,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:03,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:03,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 07:19:03,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 535 transitions, 9642 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:03,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:03,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 07:19:03,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:06,504 INFO L129 PetriNetUnfolder]: 1879/6860 cut-off events. [2022-01-19 07:19:06,504 INFO L130 PetriNetUnfolder]: For 96632/96740 co-relation queries the response was YES. [2022-01-19 07:19:06,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47628 conditions, 6860 events. 1879/6860 cut-off events. For 96632/96740 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 84650 event pairs, 214 based on Foata normal form. 8/6829 useless extension candidates. Maximal degree in co-relation 47307. Up to 1956 conditions per place. [2022-01-19 07:19:06,662 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 0 selfloop transitions, 0 changer transitions 563/563 dead transitions. [2022-01-19 07:19:06,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 563 transitions, 10778 flow [2022-01-19 07:19:06,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 07:19:06,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 07:19:06,663 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 07:19:06,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 07:19:06,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:06,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 07:19:06,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:06,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:06,666 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:06,666 INFO L186 Difference]: Start difference. First operand has 747 places, 535 transitions, 9642 flow. Second operand 18 states and 1693 transitions. [2022-01-19 07:19:06,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 563 transitions, 10778 flow [2022-01-19 07:19:07,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 563 transitions, 10579 flow, removed 66 selfloop flow, removed 16 redundant places. [2022-01-19 07:19:07,994 INFO L242 Difference]: Finished difference. Result has 743 places, 0 transitions, 0 flow [2022-01-19 07:19:07,995 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9435, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=743, PETRI_TRANSITIONS=0} [2022-01-19 07:19:07,995 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 631 predicate places. [2022-01-19 07:19:07,995 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 0 transitions, 0 flow [2022-01-19 07:19:07,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:19:07,998 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 07:19:07,998 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 07:19:07,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 07:19:07,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 07:19:07,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 07:19:08,001 INFO L732 BasicCegarLoop]: Path program histogram: [20, 20, 12, 11, 8, 8, 1, 1, 1] [2022-01-19 07:19:08,003 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 07:19:08,003 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 07:19:08,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 07:19:08 BasicIcfg [2022-01-19 07:19:08,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 07:19:08,005 INFO L158 Benchmark]: Toolchain (without parser) took 139776.92ms. Allocated memory was 371.2MB in the beginning and 14.8GB in the end (delta: 14.4GB). Free memory was 318.4MB in the beginning and 9.8GB in the end (delta: -9.4GB). Peak memory consumption was 5.4GB. Max. memory is 16.0GB. [2022-01-19 07:19:08,005 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 335.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:19:08,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.02ms. Allocated memory is still 371.2MB. Free memory was 318.2MB in the beginning and 344.4MB in the end (delta: -26.2MB). Peak memory consumption was 17.2MB. Max. memory is 16.0GB. [2022-01-19 07:19:08,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.53ms. Allocated memory is still 371.2MB. Free memory was 344.4MB in the beginning and 342.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:19:08,006 INFO L158 Benchmark]: Boogie Preprocessor took 23.99ms. Allocated memory is still 371.2MB. Free memory was 342.8MB in the beginning and 341.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:19:08,006 INFO L158 Benchmark]: RCFGBuilder took 352.00ms. Allocated memory is still 371.2MB. Free memory was 341.3MB in the beginning and 327.9MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 07:19:08,007 INFO L158 Benchmark]: TraceAbstraction took 139120.18ms. Allocated memory was 371.2MB in the beginning and 14.8GB in the end (delta: 14.4GB). Free memory was 327.6MB in the beginning and 9.8GB in the end (delta: -9.4GB). Peak memory consumption was 5.4GB. Max. memory is 16.0GB. [2022-01-19 07:19:08,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 335.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 250.02ms. Allocated memory is still 371.2MB. Free memory was 318.2MB in the beginning and 344.4MB in the end (delta: -26.2MB). Peak memory consumption was 17.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.53ms. Allocated memory is still 371.2MB. Free memory was 344.4MB in the beginning and 342.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.99ms. Allocated memory is still 371.2MB. Free memory was 342.8MB in the beginning and 341.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 352.00ms. Allocated memory is still 371.2MB. Free memory was 341.3MB in the beginning and 327.9MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 139120.18ms. Allocated memory was 371.2MB in the beginning and 14.8GB in the end (delta: 14.4GB). Free memory was 327.6MB in the beginning and 9.8GB in the end (delta: -9.4GB). Peak memory consumption was 5.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 156 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: 139.0s, OverallIterations: 82, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 131.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3741 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3741 mSDsluCounter, 12248 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14451 mSDsCounter, 366 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14398 IncrementalHoareTripleChecker+Invalid, 14764 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 366 mSolverCounterUnsat, 2666 mSDtfsCounter, 14398 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1664 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 1047 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3645 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13038occurred in iteration=40, InterpolantAutomatonStates: 1013, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 7462 NumberOfCodeBlocks, 7462 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 7380 ConstructedInterpolants, 0 QuantifiedInterpolants, 31311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 82 InterpolantComputations, 82 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 07:19:08,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...