./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:59:38,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:59:38,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:59:38,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:59:38,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:59:38,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:59:38,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:59:38,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:59:38,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:59:38,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:59:38,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:59:38,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:59:38,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:59:38,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:59:38,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:59:38,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:59:38,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:59:38,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:59:38,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:59:38,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:59:38,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:59:38,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:59:38,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:59:38,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:59:38,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:59:38,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:59:38,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:59:38,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:59:38,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:59:38,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:59:38,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:59:38,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:59:38,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:59:38,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:59:38,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:59:38,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:59:38,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:59:38,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:59:38,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:59:38,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:59:38,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:59:38,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:59:38,755 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:59:38,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:59:38,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:59:38,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:59:38,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:59:38,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:59:38,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:59:38,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:59:38,758 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:59:38,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:59:38,759 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:59:38,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:59:38,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:59:38,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:59:38,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:59:38,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:59:38,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:59:38,761 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:59:38,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:59:38,761 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:59:38,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:59:38,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:59:38,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:59:38,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:59:38,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:38,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:59:38,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:59:38,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:59:38,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:59:38,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:59:38,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:59:38,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:59:38,764 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:59:38,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:59:38,765 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:59:38,765 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:59:39,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:59:39,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:59:39,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:59:39,102 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:59:39,102 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:59:39,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-09-01 09:59:40,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:59:40,616 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:59:40,617 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-09-01 09:59:40,631 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dabcefc60/111bbdddc0e04de884106225b970f66b/FLAG7239be71e [2023-09-01 09:59:40,651 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dabcefc60/111bbdddc0e04de884106225b970f66b [2023-09-01 09:59:40,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:59:40,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:59:40,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:40,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:59:40,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:59:40,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:40" (1/1) ... [2023-09-01 09:59:40,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552b9a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:40, skipping insertion in model container [2023-09-01 09:59:40,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:40" (1/1) ... [2023-09-01 09:59:40,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:59:40,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:59:41,273 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-09-01 09:59:41,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:41,332 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:59:41,378 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-09-01 09:59:41,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:41,489 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:59:41,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41 WrapperNode [2023-09-01 09:59:41,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:41,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:41,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:59:41,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:59:41,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,545 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2023-09-01 09:59:41,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:41,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:59:41,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:59:41,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:59:41,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,581 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:59:41,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:59:41,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:59:41,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:59:41,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (1/1) ... [2023-09-01 09:59:41,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:41,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:59:41,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 09:59:41,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 09:59:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 09:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 09:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 09:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:59:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:59:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-09-01 09:59:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-09-01 09:59:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:59:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:59:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:59:41,665 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:59:41,960 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:59:41,962 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:59:42,198 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:59:42,204 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:59:42,205 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:59:42,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:42 BoogieIcfgContainer [2023-09-01 09:59:42,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:59:42,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:59:42,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:59:42,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:59:42,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:59:40" (1/3) ... [2023-09-01 09:59:42,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49284aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:42, skipping insertion in model container [2023-09-01 09:59:42,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:41" (2/3) ... [2023-09-01 09:59:42,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49284aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:42, skipping insertion in model container [2023-09-01 09:59:42,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:42" (3/3) ... [2023-09-01 09:59:42,213 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-09-01 09:59:42,220 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:59:42,228 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:59:42,228 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 09:59:42,228 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:59:42,300 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 09:59:42,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 366 flow [2023-09-01 09:59:42,431 INFO L130 PetriNetUnfolder]: 10/213 cut-off events. [2023-09-01 09:59:42,432 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:59:42,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 213 events. 10/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 373 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2023-09-01 09:59:42,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 366 flow [2023-09-01 09:59:42,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 163 transitions, 338 flow [2023-09-01 09:59:42,448 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:59:42,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 163 transitions, 338 flow [2023-09-01 09:59:42,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 163 transitions, 338 flow [2023-09-01 09:59:42,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 338 flow [2023-09-01 09:59:42,531 INFO L130 PetriNetUnfolder]: 7/194 cut-off events. [2023-09-01 09:59:42,532 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:59:42,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 7/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 312 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-09-01 09:59:42,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 2604 [2023-09-01 09:59:52,595 INFO L134 LiptonReduction]: Checked pairs total: 5770 [2023-09-01 09:59:52,596 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-09-01 09:59:52,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:59:52,612 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5763ac35, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:59:52,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 09:59:52,614 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 09:59:52,614 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:52,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:52,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 09:59:52,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 09:59:52,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash 610, now seen corresponding path program 1 times [2023-09-01 09:59:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:52,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130503786] [2023-09-01 09:59:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:52,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:52,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:52,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130503786] [2023-09-01 09:59:52,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130503786] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:52,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:52,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 09:59:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129617482] [2023-09-01 09:59:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:52,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 09:59:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 09:59:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 09:59:52,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 352 [2023-09-01 09:59:52,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:52,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:52,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 352 [2023-09-01 09:59:52,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:52,965 INFO L130 PetriNetUnfolder]: 217/420 cut-off events. [2023-09-01 09:59:52,965 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 09:59:52,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 420 events. 217/420 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2009 event pairs, 216 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 739. Up to 391 conditions per place. [2023-09-01 09:59:52,973 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-09-01 09:59:52,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-09-01 09:59:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 09:59:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 09:59:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 346 transitions. [2023-09-01 09:59:52,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914772727272727 [2023-09-01 09:59:52,994 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 346 transitions. [2023-09-01 09:59:52,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 346 transitions. [2023-09-01 09:59:52,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:52,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 346 transitions. [2023-09-01 09:59:53,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,009 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,010 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 346 transitions. [2023-09-01 09:59:53,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-09-01 09:59:53,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 09:59:53,015 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-09-01 09:59:53,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-09-01 09:59:53,019 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-09-01 09:59:53,020 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-09-01 09:59:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:53,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 09:59:53,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:59:53,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 09:59:53,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 18718605, now seen corresponding path program 1 times [2023-09-01 09:59:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:53,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132413946] [2023-09-01 09:59:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:53,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:53,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132413946] [2023-09-01 09:59:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132413946] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:53,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:53,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:59:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978826731] [2023-09-01 09:59:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:53,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:53,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:53,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:53,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-09-01 09:59:53,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:53,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-09-01 09:59:53,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:53,705 INFO L130 PetriNetUnfolder]: 344/670 cut-off events. [2023-09-01 09:59:53,705 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 09:59:53,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 670 events. 344/670 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3509 event pairs, 183 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1288. Up to 453 conditions per place. [2023-09-01 09:59:53,709 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-09-01 09:59:53,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2023-09-01 09:59:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-09-01 09:59:53,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2023-09-01 09:59:53,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-09-01 09:59:53,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-09-01 09:59:53,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:53,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-09-01 09:59:53,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,718 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 472 transitions. [2023-09-01 09:59:53,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2023-09-01 09:59:53,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:59:53,721 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-09-01 09:59:53,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-09-01 09:59:53,722 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-09-01 09:59:53,722 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-09-01 09:59:53,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:53,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 09:59:53,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:59:53,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 09:59:53,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 580276061, now seen corresponding path program 1 times [2023-09-01 09:59:53,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:53,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487185677] [2023-09-01 09:59:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:53,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:53,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:53,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487185677] [2023-09-01 09:59:53,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487185677] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:53,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:59:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133904985] [2023-09-01 09:59:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:53,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:53,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:53,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-09-01 09:59:53,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:53,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:53,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-09-01 09:59:53,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:54,126 INFO L130 PetriNetUnfolder]: 483/889 cut-off events. [2023-09-01 09:59:54,127 INFO L131 PetriNetUnfolder]: For 370/379 co-relation queries the response was YES. [2023-09-01 09:59:54,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 889 events. 483/889 cut-off events. For 370/379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4524 event pairs, 257 based on Foata normal form. 26/907 useless extension candidates. Maximal degree in co-relation 2323. Up to 669 conditions per place. [2023-09-01 09:59:54,131 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2023-09-01 09:59:54,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-09-01 09:59:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-09-01 09:59:54,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2023-09-01 09:59:54,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-09-01 09:59:54,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-09-01 09:59:54,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:54,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-09-01 09:59:54,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,138 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 473 transitions. [2023-09-01 09:59:54,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-09-01 09:59:54,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:54,142 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-09-01 09:59:54,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-09-01 09:59:54,143 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-09-01 09:59:54,143 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-09-01 09:59:54,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:54,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:54,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:59:54,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 09:59:54,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash -316833676, now seen corresponding path program 1 times [2023-09-01 09:59:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529541524] [2023-09-01 09:59:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:54,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:54,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529541524] [2023-09-01 09:59:54,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529541524] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:54,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:54,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:59:54,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766089434] [2023-09-01 09:59:54,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:54,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:54,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:54,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:54,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:54,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-09-01 09:59:54,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:54,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-09-01 09:59:54,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:54,307 INFO L130 PetriNetUnfolder]: 105/208 cut-off events. [2023-09-01 09:59:54,308 INFO L131 PetriNetUnfolder]: For 175/214 co-relation queries the response was YES. [2023-09-01 09:59:54,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 208 events. 105/208 cut-off events. For 175/214 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 789 event pairs, 23 based on Foata normal form. 23/221 useless extension candidates. Maximal degree in co-relation 539. Up to 149 conditions per place. [2023-09-01 09:59:54,311 INFO L137 encePairwiseOnDemand]: 350/352 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-09-01 09:59:54,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-09-01 09:59:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-09-01 09:59:54,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2023-09-01 09:59:54,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-09-01 09:59:54,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-09-01 09:59:54,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:54,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-09-01 09:59:54,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,320 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 489 transitions. [2023-09-01 09:59:54,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-09-01 09:59:54,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-09-01 09:59:54,322 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-09-01 09:59:54,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-09-01 09:59:54,324 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-09-01 09:59:54,324 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-09-01 09:59:54,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:54,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:54,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:54,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:59:54,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 09:59:54,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -162568070, now seen corresponding path program 1 times [2023-09-01 09:59:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:54,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250869837] [2023-09-01 09:59:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:54,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250869837] [2023-09-01 09:59:54,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250869837] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:54,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:54,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:59:54,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401014380] [2023-09-01 09:59:54,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:54,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:59:54,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:54,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:59:54,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:59:55,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 352 [2023-09-01 09:59:55,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:55,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 352 [2023-09-01 09:59:55,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:55,147 INFO L130 PetriNetUnfolder]: 110/249 cut-off events. [2023-09-01 09:59:55,148 INFO L131 PetriNetUnfolder]: For 70/72 co-relation queries the response was YES. [2023-09-01 09:59:55,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 249 events. 110/249 cut-off events. For 70/72 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1016 event pairs, 47 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 568. Up to 120 conditions per place. [2023-09-01 09:59:55,149 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 27 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-09-01 09:59:55,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 165 flow [2023-09-01 09:59:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:59:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:59:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 789 transitions. [2023-09-01 09:59:55,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44829545454545455 [2023-09-01 09:59:55,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 789 transitions. [2023-09-01 09:59:55,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 789 transitions. [2023-09-01 09:59:55,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:55,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 789 transitions. [2023-09-01 09:59:55,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,165 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,166 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 5 states and 789 transitions. [2023-09-01 09:59:55,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 165 flow [2023-09-01 09:59:55,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:59:55,167 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 92 flow [2023-09-01 09:59:55,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-09-01 09:59:55,168 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-09-01 09:59:55,168 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 92 flow [2023-09-01 09:59:55,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:55,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:55,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:59:55,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 09:59:55,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash 165079926, now seen corresponding path program 2 times [2023-09-01 09:59:55,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:55,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188463915] [2023-09-01 09:59:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:55,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:55,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:55,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188463915] [2023-09-01 09:59:55,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188463915] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:55,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:55,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:59:55,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120299299] [2023-09-01 09:59:55,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:55,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:59:55,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:55,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:59:55,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:59:55,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 352 [2023-09-01 09:59:55,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:55,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 352 [2023-09-01 09:59:55,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:55,811 INFO L130 PetriNetUnfolder]: 112/262 cut-off events. [2023-09-01 09:59:55,811 INFO L131 PetriNetUnfolder]: For 138/146 co-relation queries the response was YES. [2023-09-01 09:59:55,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 262 events. 112/262 cut-off events. For 138/146 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1175 event pairs, 37 based on Foata normal form. 9/261 useless extension candidates. Maximal degree in co-relation 703. Up to 124 conditions per place. [2023-09-01 09:59:55,813 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-09-01 09:59:55,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 211 flow [2023-09-01 09:59:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:59:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:59:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-09-01 09:59:55,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2023-09-01 09:59:55,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-09-01 09:59:55,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-09-01 09:59:55,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:55,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-09-01 09:59:55,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,823 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,823 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 92 flow. Second operand 5 states and 788 transitions. [2023-09-01 09:59:55,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 211 flow [2023-09-01 09:59:55,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:59:55,826 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 124 flow [2023-09-01 09:59:55,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-09-01 09:59:55,828 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-09-01 09:59:55,828 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 124 flow [2023-09-01 09:59:55,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:55,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:55,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:55,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:59:55,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 09:59:55,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash -879428702, now seen corresponding path program 3 times [2023-09-01 09:59:55,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:55,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47890075] [2023-09-01 09:59:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:55,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47890075] [2023-09-01 09:59:57,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47890075] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:57,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:57,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 09:59:57,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228962065] [2023-09-01 09:59:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:57,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 09:59:57,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 09:59:57,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-09-01 09:59:59,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 352 [2023-09-01 09:59:59,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 124 flow. Second operand has 14 states, 14 states have (on average 130.5) internal successors, (1827), 14 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:59,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:59,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 352 [2023-09-01 09:59:59,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:59,988 INFO L130 PetriNetUnfolder]: 267/541 cut-off events. [2023-09-01 09:59:59,988 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2023-09-01 09:59:59,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 541 events. 267/541 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2383 event pairs, 41 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1653. Up to 260 conditions per place. [2023-09-01 09:59:59,992 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 78 selfloop transitions, 25 changer transitions 0/103 dead transitions. [2023-09-01 09:59:59,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 612 flow [2023-09-01 09:59:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 09:59:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 09:59:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1901 transitions. [2023-09-01 09:59:59,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38575487012987014 [2023-09-01 09:59:59,998 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1901 transitions. [2023-09-01 09:59:59,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1901 transitions. [2023-09-01 09:59:59,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:59,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1901 transitions. [2023-09-01 10:00:00,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 135.78571428571428) internal successors, (1901), 14 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:00,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:00,013 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:00,013 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 124 flow. Second operand 14 states and 1901 transitions. [2023-09-01 10:00:00,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 612 flow [2023-09-01 10:00:00,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 103 transitions, 586 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 10:00:00,018 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 316 flow [2023-09-01 10:00:00,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=316, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-09-01 10:00:00,019 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-09-01 10:00:00,019 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 316 flow [2023-09-01 10:00:00,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 130.5) internal successors, (1827), 14 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:00,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:00,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:00,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:00:00,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:00,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash 150075208, now seen corresponding path program 4 times [2023-09-01 10:00:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:00,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823380946] [2023-09-01 10:00:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:02,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823380946] [2023-09-01 10:00:02,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823380946] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:02,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:02,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 10:00:02,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323354560] [2023-09-01 10:00:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:02,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 10:00:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 10:00:02,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-09-01 10:00:03,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 352 [2023-09-01 10:00:03,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 316 flow. Second operand has 17 states, 17 states have (on average 129.23529411764707) internal successors, (2197), 17 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:03,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 352 [2023-09-01 10:00:03,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:04,611 INFO L130 PetriNetUnfolder]: 305/638 cut-off events. [2023-09-01 10:00:04,611 INFO L131 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2023-09-01 10:00:04,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 638 events. 305/638 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3043 event pairs, 58 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 2379. Up to 378 conditions per place. [2023-09-01 10:00:04,615 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 98 selfloop transitions, 31 changer transitions 0/129 dead transitions. [2023-09-01 10:00:04,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 129 transitions, 976 flow [2023-09-01 10:00:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 10:00:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 10:00:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1888 transitions. [2023-09-01 10:00:04,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2023-09-01 10:00:04,636 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1888 transitions. [2023-09-01 10:00:04,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1888 transitions. [2023-09-01 10:00:04,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:04,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1888 transitions. [2023-09-01 10:00:04,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 134.85714285714286) internal successors, (1888), 14 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:04,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:04,648 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:04,648 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 316 flow. Second operand 14 states and 1888 transitions. [2023-09-01 10:00:04,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 129 transitions, 976 flow [2023-09-01 10:00:04,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 948 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:04,654 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 550 flow [2023-09-01 10:00:04,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=550, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-09-01 10:00:04,657 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-09-01 10:00:04,657 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 550 flow [2023-09-01 10:00:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 129.23529411764707) internal successors, (2197), 17 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:04,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:04,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:04,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:00:04,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:04,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1787597420, now seen corresponding path program 5 times [2023-09-01 10:00:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961500408] [2023-09-01 10:00:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:06,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:06,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961500408] [2023-09-01 10:00:06,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961500408] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:06,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:06,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 10:00:06,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723391950] [2023-09-01 10:00:06,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:06,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 10:00:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 10:00:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-09-01 10:00:07,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 352 [2023-09-01 10:00:07,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 550 flow. Second operand has 17 states, 17 states have (on average 129.23529411764707) internal successors, (2197), 17 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:07,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:07,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 352 [2023-09-01 10:00:07,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:09,000 INFO L130 PetriNetUnfolder]: 312/663 cut-off events. [2023-09-01 10:00:09,000 INFO L131 PetriNetUnfolder]: For 1608/1608 co-relation queries the response was YES. [2023-09-01 10:00:09,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 663 events. 312/663 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3240 event pairs, 62 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 2795. Up to 424 conditions per place. [2023-09-01 10:00:09,005 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 97 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2023-09-01 10:00:09,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1131 flow [2023-09-01 10:00:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 10:00:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 10:00:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2015 transitions. [2023-09-01 10:00:09,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3816287878787879 [2023-09-01 10:00:09,011 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2015 transitions. [2023-09-01 10:00:09,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2015 transitions. [2023-09-01 10:00:09,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:09,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2015 transitions. [2023-09-01 10:00:09,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 134.33333333333334) internal successors, (2015), 15 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:09,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:09,023 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:09,023 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 550 flow. Second operand 15 states and 2015 transitions. [2023-09-01 10:00:09,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1131 flow [2023-09-01 10:00:09,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 1103 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-09-01 10:00:09,031 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 703 flow [2023-09-01 10:00:09,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=703, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-09-01 10:00:09,032 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 54 predicate places. [2023-09-01 10:00:09,032 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 703 flow [2023-09-01 10:00:09,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 129.23529411764707) internal successors, (2197), 17 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:09,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:09,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:09,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:00:09,034 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:09,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash -472083164, now seen corresponding path program 6 times [2023-09-01 10:00:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:09,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965969448] [2023-09-01 10:00:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:10,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:10,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965969448] [2023-09-01 10:00:10,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965969448] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:10,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:10,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 10:00:10,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144863904] [2023-09-01 10:00:10,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:10,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 10:00:10,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:10,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 10:00:10,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-09-01 10:00:12,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 352 [2023-09-01 10:00:12,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 703 flow. Second operand has 17 states, 17 states have (on average 129.23529411764707) internal successors, (2197), 17 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:12,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:12,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 352 [2023-09-01 10:00:12,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:13,243 INFO L130 PetriNetUnfolder]: 316/681 cut-off events. [2023-09-01 10:00:13,243 INFO L131 PetriNetUnfolder]: For 1859/1859 co-relation queries the response was YES. [2023-09-01 10:00:13,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 681 events. 316/681 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3364 event pairs, 66 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 2973. Up to 433 conditions per place. [2023-09-01 10:00:13,249 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 102 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2023-09-01 10:00:13,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 137 transitions, 1284 flow [2023-09-01 10:00:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 10:00:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 10:00:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1887 transitions. [2023-09-01 10:00:13,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382913961038961 [2023-09-01 10:00:13,255 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1887 transitions. [2023-09-01 10:00:13,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1887 transitions. [2023-09-01 10:00:13,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:13,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1887 transitions. [2023-09-01 10:00:13,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 134.78571428571428) internal successors, (1887), 14 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,278 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,279 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 703 flow. Second operand 14 states and 1887 transitions. [2023-09-01 10:00:13,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 137 transitions, 1284 flow [2023-09-01 10:00:13,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 1230 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-09-01 10:00:13,293 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 819 flow [2023-09-01 10:00:13,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=819, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-09-01 10:00:13,294 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-09-01 10:00:13,295 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 819 flow [2023-09-01 10:00:13,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 129.23529411764707) internal successors, (2197), 17 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:13,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:13,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:00:13,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:13,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:13,297 INFO L85 PathProgramCache]: Analyzing trace with hash 636504459, now seen corresponding path program 1 times [2023-09-01 10:00:13,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:13,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576299416] [2023-09-01 10:00:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:13,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576299416] [2023-09-01 10:00:13,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576299416] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:13,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:13,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 10:00:13,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116382504] [2023-09-01 10:00:13,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:13,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 10:00:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:13,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 10:00:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-09-01 10:00:14,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 352 [2023-09-01 10:00:14,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 139.25) internal successors, (1114), 8 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:14,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:14,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 352 [2023-09-01 10:00:14,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:14,513 INFO L130 PetriNetUnfolder]: 278/731 cut-off events. [2023-09-01 10:00:14,514 INFO L131 PetriNetUnfolder]: For 2334/2344 co-relation queries the response was YES. [2023-09-01 10:00:14,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 731 events. 278/731 cut-off events. For 2334/2344 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4676 event pairs, 43 based on Foata normal form. 9/734 useless extension candidates. Maximal degree in co-relation 3180. Up to 245 conditions per place. [2023-09-01 10:00:14,521 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 81 selfloop transitions, 47 changer transitions 13/151 dead transitions. [2023-09-01 10:00:14,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 151 transitions, 1552 flow [2023-09-01 10:00:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 10:00:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 10:00:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1012 transitions. [2023-09-01 10:00:14,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2023-09-01 10:00:14,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1012 transitions. [2023-09-01 10:00:14,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1012 transitions. [2023-09-01 10:00:14,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:14,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1012 transitions. [2023-09-01 10:00:14,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.57142857142858) internal successors, (1012), 7 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:14,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:14,531 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:14,531 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 819 flow. Second operand 7 states and 1012 transitions. [2023-09-01 10:00:14,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 151 transitions, 1552 flow [2023-09-01 10:00:14,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 151 transitions, 1456 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-09-01 10:00:14,546 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 934 flow [2023-09-01 10:00:14,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=934, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-09-01 10:00:14,547 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-09-01 10:00:14,547 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 934 flow [2023-09-01 10:00:14,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.25) internal successors, (1114), 8 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:14,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:14,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:14,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:00:14,548 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:14,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1729503500, now seen corresponding path program 7 times [2023-09-01 10:00:14,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:14,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910635298] [2023-09-01 10:00:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:14,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:15,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:15,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910635298] [2023-09-01 10:00:15,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910635298] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:15,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:15,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 10:00:15,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108356386] [2023-09-01 10:00:15,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:15,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 10:00:15,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 10:00:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-09-01 10:00:17,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 352 [2023-09-01 10:00:17,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 934 flow. Second operand has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:17,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 352 [2023-09-01 10:00:17,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:17,965 INFO L130 PetriNetUnfolder]: 437/986 cut-off events. [2023-09-01 10:00:17,966 INFO L131 PetriNetUnfolder]: For 3431/3431 co-relation queries the response was YES. [2023-09-01 10:00:17,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 986 events. 437/986 cut-off events. For 3431/3431 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5796 event pairs, 170 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 4558. Up to 777 conditions per place. [2023-09-01 10:00:17,975 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 128 selfloop transitions, 28 changer transitions 0/156 dead transitions. [2023-09-01 10:00:17,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 156 transitions, 1669 flow [2023-09-01 10:00:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 10:00:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 10:00:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1763 transitions. [2023-09-01 10:00:17,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385270979020979 [2023-09-01 10:00:17,981 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1763 transitions. [2023-09-01 10:00:17,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1763 transitions. [2023-09-01 10:00:17,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:17,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1763 transitions. [2023-09-01 10:00:17,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.6153846153846) internal successors, (1763), 13 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,990 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,990 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 934 flow. Second operand 13 states and 1763 transitions. [2023-09-01 10:00:17,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 156 transitions, 1669 flow [2023-09-01 10:00:18,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 156 transitions, 1591 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-09-01 10:00:18,004 INFO L231 Difference]: Finished difference. Result has 105 places, 113 transitions, 1105 flow [2023-09-01 10:00:18,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1105, PETRI_PLACES=105, PETRI_TRANSITIONS=113} [2023-09-01 10:00:18,005 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2023-09-01 10:00:18,005 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 113 transitions, 1105 flow [2023-09-01 10:00:18,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:18,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:18,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:00:18,006 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:18,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:18,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1469704044, now seen corresponding path program 8 times [2023-09-01 10:00:18,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:18,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137886877] [2023-09-01 10:00:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:18,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:18,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:18,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137886877] [2023-09-01 10:00:18,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137886877] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:00:18,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763063734] [2023-09-01 10:00:18,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 10:00:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 10:00:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 10:00:18,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 352 [2023-09-01 10:00:18,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 113 transitions, 1105 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:18,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 352 [2023-09-01 10:00:18,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:18,598 INFO L130 PetriNetUnfolder]: 164/493 cut-off events. [2023-09-01 10:00:18,599 INFO L131 PetriNetUnfolder]: For 2294/2299 co-relation queries the response was YES. [2023-09-01 10:00:18,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 493 events. 164/493 cut-off events. For 2294/2299 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2870 event pairs, 95 based on Foata normal form. 6/489 useless extension candidates. Maximal degree in co-relation 2380. Up to 414 conditions per place. [2023-09-01 10:00:18,603 INFO L137 encePairwiseOnDemand]: 347/352 looper letters, 85 selfloop transitions, 11 changer transitions 0/107 dead transitions. [2023-09-01 10:00:18,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 1242 flow [2023-09-01 10:00:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 10:00:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 10:00:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2023-09-01 10:00:18,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44431818181818183 [2023-09-01 10:00:18,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2023-09-01 10:00:18,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2023-09-01 10:00:18,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:18,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2023-09-01 10:00:18,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 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) [2023-09-01 10:00:18,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,614 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,614 INFO L175 Difference]: Start difference. First operand has 105 places, 113 transitions, 1105 flow. Second operand 5 states and 782 transitions. [2023-09-01 10:00:18,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 1242 flow [2023-09-01 10:00:18,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 1157 flow, removed 26 selfloop flow, removed 8 redundant places. [2023-09-01 10:00:18,625 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 964 flow [2023-09-01 10:00:18,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=964, PETRI_PLACES=100, PETRI_TRANSITIONS=102} [2023-09-01 10:00:18,626 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-09-01 10:00:18,627 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 964 flow [2023-09-01 10:00:18,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:18,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:00:18,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:18,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash -115138199, now seen corresponding path program 2 times [2023-09-01 10:00:18,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:18,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889850917] [2023-09-01 10:00:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:19,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:19,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889850917] [2023-09-01 10:00:19,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889850917] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:19,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:19,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 10:00:19,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980755387] [2023-09-01 10:00:19,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:19,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 10:00:19,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 10:00:19,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-09-01 10:00:19,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 352 [2023-09-01 10:00:19,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 964 flow. Second operand has 11 states, 11 states have (on average 138.63636363636363) internal successors, (1525), 11 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:19,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:19,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 352 [2023-09-01 10:00:19,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:20,119 INFO L130 PetriNetUnfolder]: 206/645 cut-off events. [2023-09-01 10:00:20,120 INFO L131 PetriNetUnfolder]: For 2392/2393 co-relation queries the response was YES. [2023-09-01 10:00:20,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2848 conditions, 645 events. 206/645 cut-off events. For 2392/2393 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4248 event pairs, 82 based on Foata normal form. 7/647 useless extension candidates. Maximal degree in co-relation 2810. Up to 198 conditions per place. [2023-09-01 10:00:20,125 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 94 selfloop transitions, 38 changer transitions 17/157 dead transitions. [2023-09-01 10:00:20,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 157 transitions, 1697 flow [2023-09-01 10:00:20,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 10:00:20,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 10:00:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1292 transitions. [2023-09-01 10:00:20,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4078282828282828 [2023-09-01 10:00:20,128 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1292 transitions. [2023-09-01 10:00:20,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1292 transitions. [2023-09-01 10:00:20,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:20,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1292 transitions. [2023-09-01 10:00:20,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.55555555555554) internal successors, (1292), 9 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:20,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:20,134 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:20,134 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 964 flow. Second operand 9 states and 1292 transitions. [2023-09-01 10:00:20,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 157 transitions, 1697 flow [2023-09-01 10:00:20,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 157 transitions, 1686 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 10:00:20,151 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 1020 flow [2023-09-01 10:00:20,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1020, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2023-09-01 10:00:20,152 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2023-09-01 10:00:20,152 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 1020 flow [2023-09-01 10:00:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.63636363636363) internal successors, (1525), 11 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:20,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:20,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 10:00:20,153 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:20,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1078891341, now seen corresponding path program 3 times [2023-09-01 10:00:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179754887] [2023-09-01 10:00:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:20,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179754887] [2023-09-01 10:00:20,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179754887] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:20,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:20,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 10:00:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85359286] [2023-09-01 10:00:20,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:20,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 10:00:20,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 10:00:20,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-09-01 10:00:21,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 352 [2023-09-01 10:00:21,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 1020 flow. Second operand has 8 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:21,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 352 [2023-09-01 10:00:21,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:21,370 INFO L130 PetriNetUnfolder]: 181/594 cut-off events. [2023-09-01 10:00:21,371 INFO L131 PetriNetUnfolder]: For 3006/3009 co-relation queries the response was YES. [2023-09-01 10:00:21,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 594 events. 181/594 cut-off events. For 3006/3009 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3932 event pairs, 39 based on Foata normal form. 9/600 useless extension candidates. Maximal degree in co-relation 2781. Up to 199 conditions per place. [2023-09-01 10:00:21,376 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 79 selfloop transitions, 36 changer transitions 13/134 dead transitions. [2023-09-01 10:00:21,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 134 transitions, 1575 flow [2023-09-01 10:00:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 10:00:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 10:00:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1025 transitions. [2023-09-01 10:00:21,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159902597402597 [2023-09-01 10:00:21,379 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1025 transitions. [2023-09-01 10:00:21,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1025 transitions. [2023-09-01 10:00:21,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:21,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1025 transitions. [2023-09-01 10:00:21,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.42857142857142) internal successors, (1025), 7 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,384 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 1020 flow. Second operand 7 states and 1025 transitions. [2023-09-01 10:00:21,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 134 transitions, 1575 flow [2023-09-01 10:00:21,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 134 transitions, 1436 flow, removed 54 selfloop flow, removed 11 redundant places. [2023-09-01 10:00:21,397 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 895 flow [2023-09-01 10:00:21,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=895, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2023-09-01 10:00:21,398 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-09-01 10:00:21,398 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 895 flow [2023-09-01 10:00:21,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:21,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:21,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 10:00:21,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:21,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:21,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1552826806, now seen corresponding path program 9 times [2023-09-01 10:00:21,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:21,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819176953] [2023-09-01 10:00:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:21,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:22,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:22,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819176953] [2023-09-01 10:00:22,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819176953] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:22,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:22,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 10:00:22,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609302549] [2023-09-01 10:00:22,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:22,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 10:00:22,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:22,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 10:00:22,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-09-01 10:00:23,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 352 [2023-09-01 10:00:23,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 895 flow. Second operand has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:23,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:23,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 352 [2023-09-01 10:00:23,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:24,656 INFO L130 PetriNetUnfolder]: 237/678 cut-off events. [2023-09-01 10:00:24,656 INFO L131 PetriNetUnfolder]: For 3211/3211 co-relation queries the response was YES. [2023-09-01 10:00:24,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 678 events. 237/678 cut-off events. For 3211/3211 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4203 event pairs, 106 based on Foata normal form. 3/681 useless extension candidates. Maximal degree in co-relation 3128. Up to 524 conditions per place. [2023-09-01 10:00:24,661 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 99 selfloop transitions, 21 changer transitions 16/136 dead transitions. [2023-09-01 10:00:24,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 1600 flow [2023-09-01 10:00:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:00:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:00:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1621 transitions. [2023-09-01 10:00:24,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3837594696969697 [2023-09-01 10:00:24,671 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1621 transitions. [2023-09-01 10:00:24,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1621 transitions. [2023-09-01 10:00:24,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:24,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1621 transitions. [2023-09-01 10:00:24,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.08333333333334) internal successors, (1621), 12 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:24,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:24,686 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:24,686 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 895 flow. Second operand 12 states and 1621 transitions. [2023-09-01 10:00:24,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 1600 flow [2023-09-01 10:00:24,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 136 transitions, 1487 flow, removed 31 selfloop flow, removed 11 redundant places. [2023-09-01 10:00:24,702 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 1024 flow [2023-09-01 10:00:24,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1024, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2023-09-01 10:00:24,703 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2023-09-01 10:00:24,703 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 1024 flow [2023-09-01 10:00:24,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:24,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:24,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:24,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 10:00:24,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:24,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1669094552, now seen corresponding path program 10 times [2023-09-01 10:00:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120417306] [2023-09-01 10:00:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:26,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:26,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120417306] [2023-09-01 10:00:26,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120417306] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:26,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:26,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 10:00:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366251985] [2023-09-01 10:00:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:26,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 10:00:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 10:00:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-09-01 10:00:27,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 352 [2023-09-01 10:00:27,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 1024 flow. Second operand has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:27,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:27,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 352 [2023-09-01 10:00:27,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:28,162 INFO L130 PetriNetUnfolder]: 230/664 cut-off events. [2023-09-01 10:00:28,163 INFO L131 PetriNetUnfolder]: For 3259/3259 co-relation queries the response was YES. [2023-09-01 10:00:28,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 664 events. 230/664 cut-off events. For 3259/3259 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4086 event pairs, 111 based on Foata normal form. 2/666 useless extension candidates. Maximal degree in co-relation 3101. Up to 561 conditions per place. [2023-09-01 10:00:28,169 INFO L137 encePairwiseOnDemand]: 340/352 looper letters, 94 selfloop transitions, 14 changer transitions 25/133 dead transitions. [2023-09-01 10:00:28,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 133 transitions, 1591 flow [2023-09-01 10:00:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:00:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:00:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1613 transitions. [2023-09-01 10:00:28,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3818655303030303 [2023-09-01 10:00:28,172 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1613 transitions. [2023-09-01 10:00:28,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1613 transitions. [2023-09-01 10:00:28,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:28,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1613 transitions. [2023-09-01 10:00:28,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.41666666666666) internal successors, (1613), 12 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) [2023-09-01 10:00:28,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:28,180 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:28,180 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 1024 flow. Second operand 12 states and 1613 transitions. [2023-09-01 10:00:28,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 133 transitions, 1591 flow [2023-09-01 10:00:28,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 133 transitions, 1542 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-09-01 10:00:28,191 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 1079 flow [2023-09-01 10:00:28,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1079, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2023-09-01 10:00:28,192 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2023-09-01 10:00:28,192 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 1079 flow [2023-09-01 10:00:28,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:28,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:28,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:28,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 10:00:28,193 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:28,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1746854168, now seen corresponding path program 11 times [2023-09-01 10:00:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699431516] [2023-09-01 10:00:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:28,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:29,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699431516] [2023-09-01 10:00:29,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699431516] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:29,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:29,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 10:00:29,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213883097] [2023-09-01 10:00:29,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:29,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 10:00:29,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 10:00:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-09-01 10:00:30,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 352 [2023-09-01 10:00:30,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 1079 flow. Second operand has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:30,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:30,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 352 [2023-09-01 10:00:30,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:31,435 INFO L130 PetriNetUnfolder]: 229/662 cut-off events. [2023-09-01 10:00:31,436 INFO L131 PetriNetUnfolder]: For 3463/3463 co-relation queries the response was YES. [2023-09-01 10:00:31,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3214 conditions, 662 events. 229/662 cut-off events. For 3463/3463 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4090 event pairs, 111 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 3173. Up to 560 conditions per place. [2023-09-01 10:00:31,442 INFO L137 encePairwiseOnDemand]: 340/352 looper letters, 95 selfloop transitions, 13 changer transitions 24/132 dead transitions. [2023-09-01 10:00:31,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 132 transitions, 1599 flow [2023-09-01 10:00:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:00:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:00:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1613 transitions. [2023-09-01 10:00:31,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3818655303030303 [2023-09-01 10:00:31,446 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1613 transitions. [2023-09-01 10:00:31,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1613 transitions. [2023-09-01 10:00:31,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:31,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1613 transitions. [2023-09-01 10:00:31,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.41666666666666) internal successors, (1613), 12 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) [2023-09-01 10:00:31,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:31,454 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:31,454 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 1079 flow. Second operand 12 states and 1613 transitions. [2023-09-01 10:00:31,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 132 transitions, 1599 flow [2023-09-01 10:00:31,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 132 transitions, 1539 flow, removed 20 selfloop flow, removed 8 redundant places. [2023-09-01 10:00:31,467 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 1067 flow [2023-09-01 10:00:31,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1067, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2023-09-01 10:00:31,468 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 77 predicate places. [2023-09-01 10:00:31,468 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 1067 flow [2023-09-01 10:00:31,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:31,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:31,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:31,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 10:00:31,469 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:31,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:31,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1547090486, now seen corresponding path program 12 times [2023-09-01 10:00:31,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:31,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172378570] [2023-09-01 10:00:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:31,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:32,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:32,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172378570] [2023-09-01 10:00:32,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172378570] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:32,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:32,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 10:00:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614712248] [2023-09-01 10:00:32,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:32,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 10:00:32,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 10:00:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-09-01 10:00:33,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 352 [2023-09-01 10:00:33,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 1067 flow. Second operand has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:33,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:33,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 352 [2023-09-01 10:00:33,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:34,502 INFO L130 PetriNetUnfolder]: 220/643 cut-off events. [2023-09-01 10:00:34,502 INFO L131 PetriNetUnfolder]: For 3282/3282 co-relation queries the response was YES. [2023-09-01 10:00:34,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 643 events. 220/643 cut-off events. For 3282/3282 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3961 event pairs, 105 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 3050. Up to 518 conditions per place. [2023-09-01 10:00:34,507 INFO L137 encePairwiseOnDemand]: 340/352 looper letters, 94 selfloop transitions, 17 changer transitions 21/132 dead transitions. [2023-09-01 10:00:34,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 132 transitions, 1569 flow [2023-09-01 10:00:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:00:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:00:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1619 transitions. [2023-09-01 10:00:34,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38328598484848486 [2023-09-01 10:00:34,509 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1619 transitions. [2023-09-01 10:00:34,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1619 transitions. [2023-09-01 10:00:34,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:34,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1619 transitions. [2023-09-01 10:00:34,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.91666666666666) internal successors, (1619), 12 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:34,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:34,517 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:34,517 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 1067 flow. Second operand 12 states and 1619 transitions. [2023-09-01 10:00:34,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 132 transitions, 1569 flow [2023-09-01 10:00:34,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 132 transitions, 1519 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-09-01 10:00:34,530 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 1024 flow [2023-09-01 10:00:34,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1024, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2023-09-01 10:00:34,531 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 78 predicate places. [2023-09-01 10:00:34,531 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 1024 flow [2023-09-01 10:00:34,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 130.4) internal successors, (1956), 15 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:34,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:34,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:34,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 10:00:34,532 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:34,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1612514264, now seen corresponding path program 13 times [2023-09-01 10:00:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:34,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120771045] [2023-09-01 10:00:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:34,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:35,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 10:00:35,119 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-09-01 10:00:35,122 INFO L158 Benchmark]: Toolchain (without parser) took 54467.20ms. Allocated memory was 75.5MB in the beginning and 654.3MB in the end (delta: 578.8MB). Free memory was 50.5MB in the beginning and 437.4MB in the end (delta: -386.9MB). Peak memory consumption was 403.7MB. Max. memory is 16.1GB. [2023-09-01 10:00:35,122 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 58.7MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 10:00:35,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 832.98ms. Allocated memory is still 75.5MB. Free memory was 50.3MB in the beginning and 34.8MB in the end (delta: 15.5MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2023-09-01 10:00:35,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.06ms. Allocated memory is still 75.5MB. Free memory was 34.8MB in the beginning and 31.4MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:00:35,123 INFO L158 Benchmark]: Boogie Preprocessor took 44.95ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 31.4MB in the beginning and 65.4MB in the end (delta: -34.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2023-09-01 10:00:35,123 INFO L158 Benchmark]: RCFGBuilder took 611.61ms. Allocated memory is still 92.3MB. Free memory was 65.4MB in the beginning and 41.7MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-09-01 10:00:35,124 INFO L158 Benchmark]: TraceAbstraction took 52913.58ms. Allocated memory was 92.3MB in the beginning and 654.3MB in the end (delta: 562.0MB). Free memory was 41.2MB in the beginning and 437.4MB in the end (delta: -396.1MB). Peak memory consumption was 376.2MB. Max. memory is 16.1GB. [2023-09-01 10:00:35,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 58.7MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 832.98ms. Allocated memory is still 75.5MB. Free memory was 50.3MB in the beginning and 34.8MB in the end (delta: 15.5MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.06ms. Allocated memory is still 75.5MB. Free memory was 34.8MB in the beginning and 31.4MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.95ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 31.4MB in the beginning and 65.4MB in the end (delta: -34.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * RCFGBuilder took 611.61ms. Allocated memory is still 92.3MB. Free memory was 65.4MB in the beginning and 41.7MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 52913.58ms. Allocated memory was 92.3MB in the beginning and 654.3MB in the end (delta: 562.0MB). Free memory was 41.2MB in the beginning and 437.4MB in the end (delta: -396.1MB). Peak memory consumption was 376.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.1s, 163 PlacesBefore, 36 PlacesAfterwards, 163 TransitionsBefore, 32 TransitionsAfterwards, 2604 CoEnabledTransitionPairs, 8 FixpointIterations, 97 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 177 TotalNumberOfCompositions, 5770 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2818, independent: 2592, independent conditional: 0, independent unconditional: 2592, dependent: 226, dependent conditional: 0, dependent unconditional: 226, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1388, independent: 1342, independent conditional: 0, independent unconditional: 1342, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2818, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 1388, unknown conditional: 0, unknown unconditional: 1388] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-09-01 10:00:35,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:00:37,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:00:37,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:00:37,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:00:37,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:00:37,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:00:37,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:00:37,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:00:37,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:00:37,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:00:37,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:00:37,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:00:37,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:00:37,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:00:37,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:00:37,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:00:37,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:00:37,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:00:37,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:00:37,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:00:37,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:00:37,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:00:37,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:00:37,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:00:37,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:00:37,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:00:37,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:00:37,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:00:37,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:00:37,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:00:37,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:00:37,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:00:37,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:00:37,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:00:37,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:00:37,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:00:37,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:00:37,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:00:37,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:00:37,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:00:37,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:00:37,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-09-01 10:00:37,307 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:00:37,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:00:37,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:00:37,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:00:37,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:00:37,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:00:37,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:00:37,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:00:37,310 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:00:37,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:00:37,311 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:00:37,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:00:37,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:00:37,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:00:37,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:00:37,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:00:37,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 10:00:37,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 10:00:37,312 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 10:00:37,313 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:00:37,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:00:37,313 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:00:37,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:00:37,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:00:37,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:00:37,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:00:37,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:00:37,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:00:37,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:00:37,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:00:37,315 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 10:00:37,315 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 10:00:37,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:00:37,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:00:37,315 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:00:37,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:00:37,316 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 10:00:37,316 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:00:37,316 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:00:37,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:00:37,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:00:37,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:00:37,680 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:00:37,680 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:00:37,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-09-01 10:00:38,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:00:39,048 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:00:39,049 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-09-01 10:00:39,071 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/328116cc1/8497563d22da4c779ed8e08bf1058bfb/FLAG439221998 [2023-09-01 10:00:39,089 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/328116cc1/8497563d22da4c779ed8e08bf1058bfb [2023-09-01 10:00:39,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:00:39,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:00:39,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:00:39,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:00:39,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:00:39,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:00:39" (1/1) ... [2023-09-01 10:00:39,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ad6af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:39, skipping insertion in model container [2023-09-01 10:00:39,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:00:39" (1/1) ... [2023-09-01 10:00:39,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:00:39,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:00:39,954 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-09-01 10:00:39,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:00:40,008 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 10:00:40,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:00:40,067 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-09-01 10:00:40,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:00:40,096 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:00:40,140 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-09-01 10:00:40,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:00:40,264 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:00:40,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40 WrapperNode [2023-09-01 10:00:40,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:00:40,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:00:40,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:00:40,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:00:40,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,319 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 132 [2023-09-01 10:00:40,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:00:40,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:00:40,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:00:40,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:00:40,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:00:40,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:00:40,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:00:40,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:00:40,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (1/1) ... [2023-09-01 10:00:40,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:00:40,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:00:40,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 10:00:40,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 10:00:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:00:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 10:00:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-09-01 10:00:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:00:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:00:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 10:00:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:00:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:00:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 10:00:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-09-01 10:00:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-09-01 10:00:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:00:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 10:00:40,443 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:00:40,834 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:00:40,835 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:00:41,136 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:00:41,143 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:00:41,143 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 10:00:41,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:00:41 BoogieIcfgContainer [2023-09-01 10:00:41,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:00:41,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:00:41,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:00:41,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:00:41,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:00:39" (1/3) ... [2023-09-01 10:00:41,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bec863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:00:41, skipping insertion in model container [2023-09-01 10:00:41,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:40" (2/3) ... [2023-09-01 10:00:41,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bec863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:00:41, skipping insertion in model container [2023-09-01 10:00:41,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:00:41" (3/3) ... [2023-09-01 10:00:41,151 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-09-01 10:00:41,156 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:00:41,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:00:41,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 10:00:41,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:00:41,256 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:00:41,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 173 transitions, 362 flow [2023-09-01 10:00:41,378 INFO L130 PetriNetUnfolder]: 10/210 cut-off events. [2023-09-01 10:00:41,379 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:00:41,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 210 events. 10/210 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 371 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-09-01 10:00:41,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 173 transitions, 362 flow [2023-09-01 10:00:41,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 161 transitions, 334 flow [2023-09-01 10:00:41,398 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:00:41,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 161 transitions, 334 flow [2023-09-01 10:00:41,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 161 transitions, 334 flow [2023-09-01 10:00:41,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 161 transitions, 334 flow [2023-09-01 10:00:41,474 INFO L130 PetriNetUnfolder]: 7/191 cut-off events. [2023-09-01 10:00:41,475 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:00:41,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 7/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 314 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2023-09-01 10:00:41,479 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-09-01 10:01:07,487 WARN L222 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:01:12,541 WARN L222 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:01:33,910 WARN L222 SmtUtils]: Spent 16.61s on a formula simplification. DAG size of input: 217 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:01:41,634 WARN L222 SmtUtils]: Spent 7.72s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:01:50,473 WARN L222 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 217 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:01:58,597 WARN L222 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:02:08,669 WARN L222 SmtUtils]: Spent 10.07s on a formula simplification that was a NOOP. DAG size: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:02:16,346 WARN L222 SmtUtils]: Spent 7.67s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:02:43,507 WARN L222 SmtUtils]: Spent 27.16s on a formula simplification. DAG size of input: 157 DAG size of output: 155 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:02:51,552 WARN L222 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:03:09,536 WARN L222 SmtUtils]: Spent 17.65s on a formula simplification. DAG size of input: 223 DAG size of output: 221 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:03:19,272 WARN L222 SmtUtils]: Spent 9.73s on a formula simplification that was a NOOP. DAG size: 219 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:03:38,046 WARN L222 SmtUtils]: Spent 18.77s on a formula simplification. DAG size of input: 223 DAG size of output: 221 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:03:47,798 WARN L222 SmtUtils]: Spent 9.75s on a formula simplification that was a NOOP. DAG size: 219 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:05:36,873 WARN L222 SmtUtils]: Spent 1.82m on a formula simplification. DAG size of input: 273 DAG size of output: 265 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:06:28,515 WARN L222 SmtUtils]: Spent 51.64s on a formula simplification that was a NOOP. DAG size: 249 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:08:32,773 WARN L222 SmtUtils]: Spent 2.07m on a formula simplification. DAG size of input: 282 DAG size of output: 272 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:09:31,466 WARN L222 SmtUtils]: Spent 58.69s on a formula simplification that was a NOOP. DAG size: 255 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:09:54,314 WARN L222 SmtUtils]: Spent 22.85s on a formula simplification. DAG size of input: 237 DAG size of output: 235 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:10:04,847 WARN L222 SmtUtils]: Spent 10.53s on a formula simplification that was a NOOP. DAG size: 220 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:10:29,835 WARN L222 SmtUtils]: Spent 24.98s on a formula simplification. DAG size of input: 246 DAG size of output: 242 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:10:40,937 WARN L222 SmtUtils]: Spent 11.10s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:10:40,939 INFO L134 LiptonReduction]: Checked pairs total: 6189 [2023-09-01 10:10:40,939 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-09-01 10:10:40,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 10:10:40,954 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4811bb1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:10:40,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 10:10:40,955 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 10:10:40,955 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:10:40,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:40,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 10:10:40,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:40,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash 606, now seen corresponding path program 1 times [2023-09-01 10:10:40,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:40,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322486525] [2023-09-01 10:10:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:40,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:40,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:40,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:40,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 10:10:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:41,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-09-01 10:10:41,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:41,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:41,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322486525] [2023-09-01 10:10:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322486525] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:41,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:41,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 10:10:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863344803] [2023-09-01 10:10:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:41,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 10:10:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 10:10:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 10:10:41,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 353 [2023-09-01 10:10:41,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:41,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:41,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 353 [2023-09-01 10:10:41,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:42,327 INFO L130 PetriNetUnfolder]: 216/444 cut-off events. [2023-09-01 10:10:42,327 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 10:10:42,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 444 events. 216/444 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2128 event pairs, 215 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 775. Up to 389 conditions per place. [2023-09-01 10:10:42,331 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-09-01 10:10:42,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-09-01 10:10:42,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 10:10:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 10:10:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 342 transitions. [2023-09-01 10:10:42,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48441926345609065 [2023-09-01 10:10:42,349 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 342 transitions. [2023-09-01 10:10:42,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 342 transitions. [2023-09-01 10:10:42,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:42,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 342 transitions. [2023-09-01 10:10:42,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:42,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:42,362 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:42,363 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 342 transitions. [2023-09-01 10:10:42,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-09-01 10:10:42,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 10:10:42,368 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-09-01 10:10:42,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-09-01 10:10:42,374 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-09-01 10:10:42,375 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-09-01 10:10:42,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:42,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:42,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 10:10:42,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:42,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:42,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:42,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:42,586 INFO L85 PathProgramCache]: Analyzing trace with hash 18742502, now seen corresponding path program 1 times [2023-09-01 10:10:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:42,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30381511] [2023-09-01 10:10:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:42,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:42,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:42,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:42,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-09-01 10:10:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:42,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 10:10:42,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:42,831 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:42,831 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:42,832 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:42,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-09-01 10:10:42,916 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 10:10:42,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 89 [2023-09-01 10:10:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:42,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:42,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:42,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30381511] [2023-09-01 10:10:42,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30381511] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:42,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:10:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349473077] [2023-09-01 10:10:42,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:42,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:10:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:42,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:10:42,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:10:43,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-09-01 10:10:43,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:43,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:43,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-09-01 10:10:43,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:44,774 INFO L130 PetriNetUnfolder]: 344/668 cut-off events. [2023-09-01 10:10:44,774 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:10:44,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 668 events. 344/668 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3448 event pairs, 184 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1286. Up to 453 conditions per place. [2023-09-01 10:10:44,778 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-09-01 10:10:44,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2023-09-01 10:10:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:10:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:10:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-09-01 10:10:44,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4400377714825307 [2023-09-01 10:10:44,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-09-01 10:10:44,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-09-01 10:10:44,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:44,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-09-01 10:10:44,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:44,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:44,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:44,791 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 466 transitions. [2023-09-01 10:10:44,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2023-09-01 10:10:44,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 10:10:44,792 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-09-01 10:10:44,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-09-01 10:10:44,792 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-09-01 10:10:44,793 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-09-01 10:10:44,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:44,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:44,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 10:10:44,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:45,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:45,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:45,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash 581017178, now seen corresponding path program 1 times [2023-09-01 10:10:45,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:45,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729161020] [2023-09-01 10:10:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:45,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:45,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:45,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:45,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-09-01 10:10:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:45,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 10:10:45,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:45,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:45,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:45,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:45,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-09-01 10:10:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:45,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:45,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729161020] [2023-09-01 10:10:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729161020] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:45,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:45,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:10:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995382178] [2023-09-01 10:10:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:10:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:10:45,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:10:45,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-09-01 10:10:45,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:45,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:45,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-09-01 10:10:45,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:47,344 INFO L130 PetriNetUnfolder]: 483/887 cut-off events. [2023-09-01 10:10:47,344 INFO L131 PetriNetUnfolder]: For 388/396 co-relation queries the response was YES. [2023-09-01 10:10:47,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 887 events. 483/887 cut-off events. For 388/396 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4509 event pairs, 259 based on Foata normal form. 26/907 useless extension candidates. Maximal degree in co-relation 2321. Up to 669 conditions per place. [2023-09-01 10:10:47,348 INFO L137 encePairwiseOnDemand]: 346/353 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2023-09-01 10:10:47,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-09-01 10:10:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:10:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:10:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-09-01 10:10:47,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409820585457979 [2023-09-01 10:10:47,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-09-01 10:10:47,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-09-01 10:10:47,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:47,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-09-01 10:10:47,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:47,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:47,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:47,356 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 467 transitions. [2023-09-01 10:10:47,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-09-01 10:10:47,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:10:47,360 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-09-01 10:10:47,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-09-01 10:10:47,361 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-09-01 10:10:47,362 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-09-01 10:10:47,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:47,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:47,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:47,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-09-01 10:10:47,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:47,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:47,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:47,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1699745419, now seen corresponding path program 1 times [2023-09-01 10:10:47,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:47,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613277649] [2023-09-01 10:10:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:47,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:47,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:47,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:47,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-09-01 10:10:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:47,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 10:10:47,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:47,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:47,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:47,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613277649] [2023-09-01 10:10:47,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613277649] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:47,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:47,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:10:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918956549] [2023-09-01 10:10:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:47,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:10:47,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:10:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:10:47,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 353 [2023-09-01 10:10:47,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:47,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:47,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 353 [2023-09-01 10:10:47,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:49,082 INFO L130 PetriNetUnfolder]: 107/215 cut-off events. [2023-09-01 10:10:49,082 INFO L131 PetriNetUnfolder]: For 169/185 co-relation queries the response was YES. [2023-09-01 10:10:49,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 215 events. 107/215 cut-off events. For 169/185 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 775 event pairs, 42 based on Foata normal form. 31/236 useless extension candidates. Maximal degree in co-relation 557. Up to 149 conditions per place. [2023-09-01 10:10:49,083 INFO L137 encePairwiseOnDemand]: 351/353 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-09-01 10:10:49,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-09-01 10:10:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:10:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:10:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-09-01 10:10:49,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45609065155807366 [2023-09-01 10:10:49,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-09-01 10:10:49,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-09-01 10:10:49,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:49,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-09-01 10:10:49,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:49,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:49,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:49,093 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 483 transitions. [2023-09-01 10:10:49,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-09-01 10:10:49,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-09-01 10:10:49,097 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-09-01 10:10:49,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-09-01 10:10:49,098 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-09-01 10:10:49,099 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-09-01 10:10:49,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:49,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:49,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:49,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-09-01 10:10:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:49,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:49,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2130198213, now seen corresponding path program 1 times [2023-09-01 10:10:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:49,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533990938] [2023-09-01 10:10:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:49,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:49,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:49,314 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:49,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-09-01 10:10:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:49,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 10:10:49,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:49,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-09-01 10:10:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:49,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:49,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533990938] [2023-09-01 10:10:49,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533990938] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:49,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:49,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:10:49,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743565385] [2023-09-01 10:10:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 10:10:49,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 10:10:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 10:10:49,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 353 [2023-09-01 10:10:49,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:49,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:49,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 353 [2023-09-01 10:10:49,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:51,564 INFO L130 PetriNetUnfolder]: 109/247 cut-off events. [2023-09-01 10:10:51,564 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2023-09-01 10:10:51,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 247 events. 109/247 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1063 event pairs, 46 based on Foata normal form. 11/252 useless extension candidates. Maximal degree in co-relation 566. Up to 104 conditions per place. [2023-09-01 10:10:51,565 INFO L137 encePairwiseOnDemand]: 346/353 looper letters, 27 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-09-01 10:10:51,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 171 flow [2023-09-01 10:10:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 10:10:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 10:10:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 947 transitions. [2023-09-01 10:10:51,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471199244570349 [2023-09-01 10:10:51,570 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 947 transitions. [2023-09-01 10:10:51,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 947 transitions. [2023-09-01 10:10:51,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:51,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 947 transitions. [2023-09-01 10:10:51,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:51,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:51,577 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:51,578 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 6 states and 947 transitions. [2023-09-01 10:10:51,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 171 flow [2023-09-01 10:10:51,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:10:51,579 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 94 flow [2023-09-01 10:10:51,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-09-01 10:10:51,580 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-09-01 10:10:51,580 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 94 flow [2023-09-01 10:10:51,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:51,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:51,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:51,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:51,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:51,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:51,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1969654565, now seen corresponding path program 2 times [2023-09-01 10:10:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:51,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663051005] [2023-09-01 10:10:51,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 10:10:51,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:51,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:51,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-09-01 10:10:52,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:10:52,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:10:52,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:10:52,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:52,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:10:52,278 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:10:52,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:10:52,358 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:10:52,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:10:52,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:52,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:10:53,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:10:53,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:53,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:53,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:53,395 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:53,396 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:53,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:10:53,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:10:54,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:10:54,124 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:10:54,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:10:54,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:10:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:54,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:54,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663051005] [2023-09-01 10:10:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663051005] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:54,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:10:54,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392850993] [2023-09-01 10:10:54,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:54,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:10:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:10:54,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:10:59,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:10:59,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 94 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:59,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:59,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:10:59,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:06,623 INFO L130 PetriNetUnfolder]: 227/451 cut-off events. [2023-09-01 10:11:06,624 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-09-01 10:11:06,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 451 events. 227/451 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1864 event pairs, 16 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 1251. Up to 282 conditions per place. [2023-09-01 10:11:06,626 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 66 selfloop transitions, 26 changer transitions 0/92 dead transitions. [2023-09-01 10:11:06,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 92 transitions, 498 flow [2023-09-01 10:11:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 10:11:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 10:11:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1725 transitions. [2023-09-01 10:11:06,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375898888646764 [2023-09-01 10:11:06,632 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1725 transitions. [2023-09-01 10:11:06,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1725 transitions. [2023-09-01 10:11:06,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:06,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1725 transitions. [2023-09-01 10:11:06,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.69230769230768) internal successors, (1725), 13 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:06,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:06,643 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:06,643 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 94 flow. Second operand 13 states and 1725 transitions. [2023-09-01 10:11:06,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 92 transitions, 498 flow [2023-09-01 10:11:06,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 92 transitions, 495 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:11:06,646 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 300 flow [2023-09-01 10:11:06,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=300, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-09-01 10:11:06,647 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-09-01 10:11:06,647 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 300 flow [2023-09-01 10:11:06,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:06,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:06,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:06,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:06,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:06,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:06,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1455497181, now seen corresponding path program 3 times [2023-09-01 10:11:06,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:06,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734755412] [2023-09-01 10:11:06,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 10:11:06,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:06,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:06,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:06,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 10:11:07,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 10:11:07,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:07,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 10:11:07,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:07,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-09-01 10:11:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:07,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:07,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:07,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734755412] [2023-09-01 10:11:07,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734755412] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:07,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:07,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:11:07,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125501710] [2023-09-01 10:11:07,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:07,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 10:11:07,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 10:11:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 10:11:07,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 353 [2023-09-01 10:11:07,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:07,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:07,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 353 [2023-09-01 10:11:07,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:09,409 INFO L130 PetriNetUnfolder]: 88/249 cut-off events. [2023-09-01 10:11:09,409 INFO L131 PetriNetUnfolder]: For 398/402 co-relation queries the response was YES. [2023-09-01 10:11:09,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 249 events. 88/249 cut-off events. For 398/402 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1071 event pairs, 11 based on Foata normal form. 20/268 useless extension candidates. Maximal degree in co-relation 877. Up to 125 conditions per place. [2023-09-01 10:11:09,411 INFO L137 encePairwiseOnDemand]: 346/353 looper letters, 40 selfloop transitions, 15 changer transitions 0/63 dead transitions. [2023-09-01 10:11:09,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 457 flow [2023-09-01 10:11:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 10:11:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 10:11:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1096 transitions. [2023-09-01 10:11:09,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44354512343180896 [2023-09-01 10:11:09,415 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1096 transitions. [2023-09-01 10:11:09,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1096 transitions. [2023-09-01 10:11:09,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:09,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1096 transitions. [2023-09-01 10:11:09,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.57142857142858) internal successors, (1096), 7 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:09,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:09,421 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:09,421 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 300 flow. Second operand 7 states and 1096 transitions. [2023-09-01 10:11:09,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 457 flow [2023-09-01 10:11:09,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 420 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-09-01 10:11:09,425 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 283 flow [2023-09-01 10:11:09,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-09-01 10:11:09,426 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-09-01 10:11:09,426 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 283 flow [2023-09-01 10:11:09,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:09,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:09,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:09,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:09,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:09,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -992304405, now seen corresponding path program 4 times [2023-09-01 10:11:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819561480] [2023-09-01 10:11:09,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 10:11:09,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:09,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:09,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:09,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-09-01 10:11:09,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 10:11:09,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:10,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:11:10,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:10,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:10,077 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:11:10,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:11:10,145 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:10,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:10,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:10,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:11:10,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:10,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:10,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:10,976 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:10,976 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:10,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:11:11,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:11:11,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:11:11,451 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:11:11,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:11:11,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:11:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:11,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:11,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:11,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819561480] [2023-09-01 10:11:11,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819561480] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:11,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:11,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:11:11,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115174737] [2023-09-01 10:11:11,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:11,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:11:11,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:11,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:11:11,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:11:17,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:11:17,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 283 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:17,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:17,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:11:17,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:24,705 INFO L130 PetriNetUnfolder]: 141/345 cut-off events. [2023-09-01 10:11:24,705 INFO L131 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2023-09-01 10:11:24,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 345 events. 141/345 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1462 event pairs, 38 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 1190. Up to 238 conditions per place. [2023-09-01 10:11:24,707 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 73 selfloop transitions, 22 changer transitions 0/95 dead transitions. [2023-09-01 10:11:24,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 677 flow [2023-09-01 10:11:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 10:11:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 10:11:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1714 transitions. [2023-09-01 10:11:24,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37350185225539334 [2023-09-01 10:11:24,722 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1714 transitions. [2023-09-01 10:11:24,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1714 transitions. [2023-09-01 10:11:24,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:24,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1714 transitions. [2023-09-01 10:11:24,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 131.84615384615384) internal successors, (1714), 13 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:24,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:24,734 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:24,734 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 283 flow. Second operand 13 states and 1714 transitions. [2023-09-01 10:11:24,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 677 flow [2023-09-01 10:11:24,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 643 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-09-01 10:11:24,740 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 409 flow [2023-09-01 10:11:24,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=409, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-09-01 10:11:24,742 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-09-01 10:11:24,742 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 409 flow [2023-09-01 10:11:24,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:24,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:24,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:24,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:24,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:24,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:24,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1195329309, now seen corresponding path program 1 times [2023-09-01 10:11:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:24,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134076217] [2023-09-01 10:11:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:11:24,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:24,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:24,961 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:24,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-09-01 10:11:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:11:25,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 10:11:25,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:25,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-09-01 10:11:25,396 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 10:11:25,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 10:11:25,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:25,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:25,495 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:25,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:25,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-09-01 10:11:25,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-09-01 10:11:25,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 10:11:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:25,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:25,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:25,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134076217] [2023-09-01 10:11:25,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134076217] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:25,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:25,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 10:11:25,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291990699] [2023-09-01 10:11:25,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:25,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 10:11:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 10:11:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-09-01 10:11:26,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 353 [2023-09-01 10:11:26,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 409 flow. Second operand has 8 states, 8 states have (on average 138.375) internal successors, (1107), 8 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:26,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:26,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 353 [2023-09-01 10:11:26,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:29,514 INFO L130 PetriNetUnfolder]: 147/397 cut-off events. [2023-09-01 10:11:29,514 INFO L131 PetriNetUnfolder]: For 612/620 co-relation queries the response was YES. [2023-09-01 10:11:29,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 397 events. 147/397 cut-off events. For 612/620 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2011 event pairs, 35 based on Foata normal form. 4/398 useless extension candidates. Maximal degree in co-relation 1463. Up to 149 conditions per place. [2023-09-01 10:11:29,517 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 89 selfloop transitions, 24 changer transitions 0/118 dead transitions. [2023-09-01 10:11:29,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 118 transitions, 954 flow [2023-09-01 10:11:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 10:11:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 10:11:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1003 transitions. [2023-09-01 10:11:29,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405908539053015 [2023-09-01 10:11:29,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1003 transitions. [2023-09-01 10:11:29,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1003 transitions. [2023-09-01 10:11:29,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:29,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1003 transitions. [2023-09-01 10:11:29,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:29,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:29,526 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:29,526 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 409 flow. Second operand 7 states and 1003 transitions. [2023-09-01 10:11:29,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 118 transitions, 954 flow [2023-09-01 10:11:29,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 899 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-09-01 10:11:29,532 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 530 flow [2023-09-01 10:11:29,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-09-01 10:11:29,532 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2023-09-01 10:11:29,532 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 530 flow [2023-09-01 10:11:29,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.375) internal successors, (1107), 8 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:29,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:29,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:29,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:29,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:29,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:29,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1863836567, now seen corresponding path program 5 times [2023-09-01 10:11:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:29,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677786588] [2023-09-01 10:11:29,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 10:11:29,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:29,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:29,751 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:29,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-09-01 10:11:30,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:11:30,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:30,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:11:30,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:30,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:30,269 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:11:30,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:11:30,347 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:30,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:30,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:30,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:30,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:11:31,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:31,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:31,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:31,130 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:31,130 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:31,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:11:31,290 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:11:31,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:11:31,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:11:31,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:11:31,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:11:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:31,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:31,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:31,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677786588] [2023-09-01 10:11:31,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677786588] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:31,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:31,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:11:31,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555416981] [2023-09-01 10:11:31,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:31,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:11:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:11:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:11:35,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:11:35,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 530 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:35,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:35,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:11:35,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:44,099 INFO L130 PetriNetUnfolder]: 197/496 cut-off events. [2023-09-01 10:11:44,100 INFO L131 PetriNetUnfolder]: For 1124/1124 co-relation queries the response was YES. [2023-09-01 10:11:44,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 496 events. 197/496 cut-off events. For 1124/1124 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2516 event pairs, 58 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 1965. Up to 386 conditions per place. [2023-09-01 10:11:44,102 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 85 selfloop transitions, 23 changer transitions 18/126 dead transitions. [2023-09-01 10:11:44,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 1115 flow [2023-09-01 10:11:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 10:11:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 10:11:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1842 transitions. [2023-09-01 10:11:44,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727235936867665 [2023-09-01 10:11:44,107 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1842 transitions. [2023-09-01 10:11:44,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1842 transitions. [2023-09-01 10:11:44,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:44,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1842 transitions. [2023-09-01 10:11:44,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.57142857142858) internal successors, (1842), 14 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:44,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:44,117 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:44,117 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 530 flow. Second operand 14 states and 1842 transitions. [2023-09-01 10:11:44,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 1115 flow [2023-09-01 10:11:44,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 126 transitions, 1066 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-09-01 10:11:44,124 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 662 flow [2023-09-01 10:11:44,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=662, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2023-09-01 10:11:44,124 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-09-01 10:11:44,125 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 662 flow [2023-09-01 10:11:44,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:44,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:44,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:44,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:44,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:44,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:44,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash -585529955, now seen corresponding path program 6 times [2023-09-01 10:11:44,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:44,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762622118] [2023-09-01 10:11:44,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 10:11:44,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:44,343 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:44,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-09-01 10:11:44,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 10:11:44,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:44,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:11:44,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:44,838 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:44,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:44,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:44,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:44,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:45,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:45,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:45,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:11:45,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:45,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:45,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:45,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:45,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:45,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:11:45,745 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:11:45,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:11:45,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:11:46,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:11:46,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:11:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:46,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:46,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762622118] [2023-09-01 10:11:46,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762622118] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:46,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:46,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:11:46,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815228571] [2023-09-01 10:11:46,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:46,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:11:46,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:11:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:11:49,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:11:49,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 662 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:49,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:49,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:11:49,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:58,937 INFO L130 PetriNetUnfolder]: 187/480 cut-off events. [2023-09-01 10:11:58,940 INFO L131 PetriNetUnfolder]: For 1343/1343 co-relation queries the response was YES. [2023-09-01 10:11:58,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 480 events. 187/480 cut-off events. For 1343/1343 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2425 event pairs, 47 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 2059. Up to 313 conditions per place. [2023-09-01 10:11:58,943 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 78 selfloop transitions, 31 changer transitions 21/130 dead transitions. [2023-09-01 10:11:58,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 130 transitions, 1194 flow [2023-09-01 10:11:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 10:11:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 10:11:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1716 transitions. [2023-09-01 10:11:58,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37393767705382436 [2023-09-01 10:11:58,949 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1716 transitions. [2023-09-01 10:11:58,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1716 transitions. [2023-09-01 10:11:58,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:58,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1716 transitions. [2023-09-01 10:11:58,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.0) internal successors, (1716), 13 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:58,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:58,971 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:58,971 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 662 flow. Second operand 13 states and 1716 transitions. [2023-09-01 10:11:58,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 130 transitions, 1194 flow [2023-09-01 10:11:58,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 130 transitions, 1159 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-09-01 10:11:58,982 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 715 flow [2023-09-01 10:11:58,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=715, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2023-09-01 10:11:58,983 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2023-09-01 10:11:58,983 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 715 flow [2023-09-01 10:11:58,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:58,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:58,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:59,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:59,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:59,202 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:59,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1856341931, now seen corresponding path program 7 times [2023-09-01 10:11:59,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:59,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496289677] [2023-09-01 10:11:59,203 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 10:11:59,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:59,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:59,204 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:59,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-09-01 10:11:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:11:59,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:11:59,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:59,664 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:59,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:59,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:59,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:59,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:59,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:59,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:00,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:00,485 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:00,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:00,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:00,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:00,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:00,594 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:00,594 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:00,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:00,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:00,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:12:01,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:01,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:01,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496289677] [2023-09-01 10:12:01,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496289677] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:01,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:01,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:12:01,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378568294] [2023-09-01 10:12:01,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:01,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:12:01,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:01,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:12:01,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:12:04,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:12:04,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 715 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:04,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:04,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:12:04,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:11,584 INFO L130 PetriNetUnfolder]: 186/482 cut-off events. [2023-09-01 10:12:11,584 INFO L131 PetriNetUnfolder]: For 1739/1739 co-relation queries the response was YES. [2023-09-01 10:12:11,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2243 conditions, 482 events. 186/482 cut-off events. For 1739/1739 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2453 event pairs, 62 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 2208. Up to 392 conditions per place. [2023-09-01 10:12:11,587 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 81 selfloop transitions, 16 changer transitions 26/123 dead transitions. [2023-09-01 10:12:11,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 123 transitions, 1228 flow [2023-09-01 10:12:11,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 10:12:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 10:12:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1706 transitions. [2023-09-01 10:12:11,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717585530616692 [2023-09-01 10:12:11,591 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1706 transitions. [2023-09-01 10:12:11,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1706 transitions. [2023-09-01 10:12:11,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:11,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1706 transitions. [2023-09-01 10:12:11,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 131.23076923076923) internal successors, (1706), 13 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:11,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:11,597 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:11,598 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 715 flow. Second operand 13 states and 1706 transitions. [2023-09-01 10:12:11,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 123 transitions, 1228 flow [2023-09-01 10:12:11,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 123 transitions, 1137 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-09-01 10:12:11,606 INFO L231 Difference]: Finished difference. Result has 106 places, 85 transitions, 686 flow [2023-09-01 10:12:11,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=686, PETRI_PLACES=106, PETRI_TRANSITIONS=85} [2023-09-01 10:12:11,607 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 70 predicate places. [2023-09-01 10:12:11,607 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 85 transitions, 686 flow [2023-09-01 10:12:11,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:11,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:11,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:11,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-09-01 10:12:11,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:11,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:11,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:11,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2042953009, now seen corresponding path program 8 times [2023-09-01 10:12:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:11,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212772700] [2023-09-01 10:12:11,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 10:12:11,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:11,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:11,827 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:11,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-09-01 10:12:12,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:12:12,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:12:12,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:12:12,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:12,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:12,252 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:12:12,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:12:12,329 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:12:12,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:12:12,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:12,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:12,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:13,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:13,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:13,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:13,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:13,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:13,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:13,244 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:13,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:13,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:13,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:12:13,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:13,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:13,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212772700] [2023-09-01 10:12:13,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212772700] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:13,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:13,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:12:13,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379645561] [2023-09-01 10:12:13,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:13,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:12:13,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:13,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:12:13,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:12:16,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:12:16,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 85 transitions, 686 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:16,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:16,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:12:16,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:25,140 INFO L130 PetriNetUnfolder]: 176/460 cut-off events. [2023-09-01 10:12:25,141 INFO L131 PetriNetUnfolder]: For 1851/1851 co-relation queries the response was YES. [2023-09-01 10:12:25,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 460 events. 176/460 cut-off events. For 1851/1851 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2318 event pairs, 59 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2111. Up to 357 conditions per place. [2023-09-01 10:12:25,144 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 83 selfloop transitions, 20 changer transitions 22/125 dead transitions. [2023-09-01 10:12:25,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 125 transitions, 1218 flow [2023-09-01 10:12:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 10:12:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 10:12:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1710 transitions. [2023-09-01 10:12:25,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37263020265853125 [2023-09-01 10:12:25,151 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1710 transitions. [2023-09-01 10:12:25,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1710 transitions. [2023-09-01 10:12:25,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:25,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1710 transitions. [2023-09-01 10:12:25,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 131.53846153846155) internal successors, (1710), 13 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:25,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:25,158 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:25,158 INFO L175 Difference]: Start difference. First operand has 106 places, 85 transitions, 686 flow. Second operand 13 states and 1710 transitions. [2023-09-01 10:12:25,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 125 transitions, 1218 flow [2023-09-01 10:12:25,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 125 transitions, 1160 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-09-01 10:12:25,167 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 726 flow [2023-09-01 10:12:25,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=726, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2023-09-01 10:12:25,168 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 71 predicate places. [2023-09-01 10:12:25,168 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 726 flow [2023-09-01 10:12:25,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:25,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:25,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:25,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-09-01 10:12:25,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:25,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:25,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 53624049, now seen corresponding path program 9 times [2023-09-01 10:12:25,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:25,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654204507] [2023-09-01 10:12:25,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 10:12:25,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:25,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:25,387 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:25,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-09-01 10:12:25,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 10:12:25,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:12:25,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 78 conjunts are in the unsatisfiable core [2023-09-01 10:12:25,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:25,912 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:12:25,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:12:25,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:25,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:25,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:26,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:26,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:26,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:26,604 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:26,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:26,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:26,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:26,817 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:26,817 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:26,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:27,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:12:27,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:27,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:27,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:27,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654204507] [2023-09-01 10:12:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654204507] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:27,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:27,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:12:27,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737902110] [2023-09-01 10:12:27,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:27,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:12:27,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:27,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:12:27,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:12:30,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:12:30,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 726 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:30,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:30,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:12:30,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:40,385 INFO L130 PetriNetUnfolder]: 175/463 cut-off events. [2023-09-01 10:12:40,385 INFO L131 PetriNetUnfolder]: For 2210/2210 co-relation queries the response was YES. [2023-09-01 10:12:40,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 463 events. 175/463 cut-off events. For 2210/2210 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2365 event pairs, 56 based on Foata normal form. 1/462 useless extension candidates. Maximal degree in co-relation 2189. Up to 374 conditions per place. [2023-09-01 10:12:40,388 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 82 selfloop transitions, 18 changer transitions 25/125 dead transitions. [2023-09-01 10:12:40,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 125 transitions, 1275 flow [2023-09-01 10:12:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 10:12:40,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 10:12:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1961 transitions. [2023-09-01 10:12:40,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37034938621340885 [2023-09-01 10:12:40,393 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1961 transitions. [2023-09-01 10:12:40,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1961 transitions. [2023-09-01 10:12:40,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:40,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1961 transitions. [2023-09-01 10:12:40,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 130.73333333333332) internal successors, (1961), 15 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:40,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:40,403 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:40,403 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 726 flow. Second operand 15 states and 1961 transitions. [2023-09-01 10:12:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 125 transitions, 1275 flow [2023-09-01 10:12:40,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 125 transitions, 1207 flow, removed 19 selfloop flow, removed 9 redundant places. [2023-09-01 10:12:40,413 INFO L231 Difference]: Finished difference. Result has 116 places, 89 transitions, 756 flow [2023-09-01 10:12:40,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=756, PETRI_PLACES=116, PETRI_TRANSITIONS=89} [2023-09-01 10:12:40,414 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 80 predicate places. [2023-09-01 10:12:40,414 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 89 transitions, 756 flow [2023-09-01 10:12:40,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:40,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:40,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:40,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-09-01 10:12:40,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:40,636 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:40,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash 699562651, now seen corresponding path program 10 times [2023-09-01 10:12:40,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61268450] [2023-09-01 10:12:40,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 10:12:40,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:40,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:40,638 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:40,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-09-01 10:12:41,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 10:12:41,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:12:41,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:12:41,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:41,157 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:12:41,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:12:41,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:41,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:41,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:41,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:41,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:41,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:41,928 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:41,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:42,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:42,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:42,028 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:42,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:42,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:42,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:12:42,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:42,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:42,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:42,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:42,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61268450] [2023-09-01 10:12:42,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61268450] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:42,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:12:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110372767] [2023-09-01 10:12:42,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:42,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:12:42,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:12:42,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:12:46,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:12:46,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 89 transitions, 756 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:46,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:46,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:12:46,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:54,527 INFO L130 PetriNetUnfolder]: 169/450 cut-off events. [2023-09-01 10:12:54,527 INFO L131 PetriNetUnfolder]: For 2567/2567 co-relation queries the response was YES. [2023-09-01 10:12:54,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 450 events. 169/450 cut-off events. For 2567/2567 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2289 event pairs, 49 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2160. Up to 364 conditions per place. [2023-09-01 10:12:54,531 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 80 selfloop transitions, 17 changer transitions 24/121 dead transitions. [2023-09-01 10:12:54,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 121 transitions, 1235 flow [2023-09-01 10:12:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 10:12:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 10:12:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1834 transitions. [2023-09-01 10:12:54,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37110481586402266 [2023-09-01 10:12:54,535 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1834 transitions. [2023-09-01 10:12:54,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1834 transitions. [2023-09-01 10:12:54,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:54,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1834 transitions. [2023-09-01 10:12:54,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.0) internal successors, (1834), 14 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:54,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:54,542 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:54,542 INFO L175 Difference]: Start difference. First operand has 116 places, 89 transitions, 756 flow. Second operand 14 states and 1834 transitions. [2023-09-01 10:12:54,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 121 transitions, 1235 flow [2023-09-01 10:12:54,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 121 transitions, 1163 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-09-01 10:12:54,552 INFO L231 Difference]: Finished difference. Result has 117 places, 85 transitions, 706 flow [2023-09-01 10:12:54,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=706, PETRI_PLACES=117, PETRI_TRANSITIONS=85} [2023-09-01 10:12:54,553 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2023-09-01 10:12:54,553 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 85 transitions, 706 flow [2023-09-01 10:12:54,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:54,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:54,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:54,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-09-01 10:12:54,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:54,772 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:54,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash 319122909, now seen corresponding path program 11 times [2023-09-01 10:12:54,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:54,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099391067] [2023-09-01 10:12:54,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 10:12:54,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:54,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:54,774 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:54,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-09-01 10:12:55,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:12:55,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:12:55,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:12:55,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:55,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:55,297 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:12:55,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:12:55,353 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:12:55,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:12:55,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:55,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:55,952 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:55,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:56,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:56,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:56,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:56,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:56,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:56,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:56,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:56,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:12:56,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:56,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:56,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:56,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:56,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099391067] [2023-09-01 10:12:56,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099391067] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:56,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:56,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:12:56,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327613301] [2023-09-01 10:12:56,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:56,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:12:56,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:56,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:12:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:13:00,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2023-09-01 10:13:00,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 85 transitions, 706 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:00,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:00,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2023-09-01 10:13:00,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:13:09,646 INFO L130 PetriNetUnfolder]: 168/450 cut-off events. [2023-09-01 10:13:09,646 INFO L131 PetriNetUnfolder]: For 2284/2284 co-relation queries the response was YES. [2023-09-01 10:13:09,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 450 events. 168/450 cut-off events. For 2284/2284 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2289 event pairs, 71 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2123. Up to 387 conditions per place. [2023-09-01 10:13:09,649 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 81 selfloop transitions, 12 changer transitions 25/118 dead transitions. [2023-09-01 10:13:09,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 118 transitions, 1199 flow [2023-09-01 10:13:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 10:13:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 10:13:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1697 transitions. [2023-09-01 10:13:09,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36979734146872956 [2023-09-01 10:13:09,652 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1697 transitions. [2023-09-01 10:13:09,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1697 transitions. [2023-09-01 10:13:09,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:13:09,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1697 transitions. [2023-09-01 10:13:09,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 130.53846153846155) internal successors, (1697), 13 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) [2023-09-01 10:13:09,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:09,657 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:09,658 INFO L175 Difference]: Start difference. First operand has 117 places, 85 transitions, 706 flow. Second operand 13 states and 1697 transitions. [2023-09-01 10:13:09,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 118 transitions, 1199 flow [2023-09-01 10:13:09,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 118 transitions, 1126 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-09-01 10:13:09,666 INFO L231 Difference]: Finished difference. Result has 117 places, 90 transitions, 760 flow [2023-09-01 10:13:09,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=760, PETRI_PLACES=117, PETRI_TRANSITIONS=90} [2023-09-01 10:13:09,667 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2023-09-01 10:13:09,667 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 90 transitions, 760 flow [2023-09-01 10:13:09,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:09,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:13:09,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:13:09,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-09-01 10:13:09,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:09,885 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:13:09,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:13:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1026722449, now seen corresponding path program 12 times [2023-09-01 10:13:09,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:13:09,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14936526] [2023-09-01 10:13:09,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 10:13:09,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:09,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:13:09,887 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:13:09,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-09-01 10:13:10,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 10:13:10,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:13:10,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 76 conjunts are in the unsatisfiable core [2023-09-01 10:13:10,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:13:10,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:13:10,351 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:13:10,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:13:10,389 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-09-01 10:13:10,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-09-01 10:13:10,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:13:10,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2023-09-01 10:13:10,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:10,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:10,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:10,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:10,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:10,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 65 [2023-09-01 10:13:10,973 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-09-01 10:13:10,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-09-01 10:13:11,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:13:11,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:13:11,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:13:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:13:11,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:13:11,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:13:11,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14936526] [2023-09-01 10:13:11,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14936526] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:13:11,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:13:11,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 10:13:11,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967492939] [2023-09-01 10:13:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:13:11,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 10:13:11,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:13:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 10:13:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-09-01 10:13:14,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 353 [2023-09-01 10:13:14,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 90 transitions, 760 flow. Second operand has 13 states, 13 states have (on average 128.6153846153846) internal successors, (1672), 13 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:14,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:14,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 353 [2023-09-01 10:13:14,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:13:23,091 INFO L130 PetriNetUnfolder]: 183/481 cut-off events. [2023-09-01 10:13:23,092 INFO L131 PetriNetUnfolder]: For 2867/2867 co-relation queries the response was YES. [2023-09-01 10:13:23,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 481 events. 183/481 cut-off events. For 2867/2867 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2461 event pairs, 89 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2307. Up to 412 conditions per place. [2023-09-01 10:13:23,094 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 94 selfloop transitions, 18 changer transitions 16/128 dead transitions. [2023-09-01 10:13:23,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 128 transitions, 1302 flow [2023-09-01 10:13:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 10:13:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 10:13:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1841 transitions. [2023-09-01 10:13:23,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37252124645892354 [2023-09-01 10:13:23,097 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1841 transitions. [2023-09-01 10:13:23,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1841 transitions. [2023-09-01 10:13:23,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:13:23,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1841 transitions. [2023-09-01 10:13:23,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.5) internal successors, (1841), 14 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:23,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:23,104 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:23,104 INFO L175 Difference]: Start difference. First operand has 117 places, 90 transitions, 760 flow. Second operand 14 states and 1841 transitions. [2023-09-01 10:13:23,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 128 transitions, 1302 flow [2023-09-01 10:13:23,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 1245 flow, removed 23 selfloop flow, removed 8 redundant places. [2023-09-01 10:13:23,115 INFO L231 Difference]: Finished difference. Result has 125 places, 102 transitions, 921 flow [2023-09-01 10:13:23,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=921, PETRI_PLACES=125, PETRI_TRANSITIONS=102} [2023-09-01 10:13:23,115 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 89 predicate places. [2023-09-01 10:13:23,115 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 102 transitions, 921 flow [2023-09-01 10:13:23,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 128.6153846153846) internal successors, (1672), 13 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:23,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:13:23,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:13:23,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-09-01 10:13:23,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:23,333 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:13:23,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:13:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1695050323, now seen corresponding path program 13 times [2023-09-01 10:13:23,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:13:23,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2408159] [2023-09-01 10:13:23,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 10:13:23,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:23,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:13:23,335 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:13:23,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-09-01 10:13:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:13:23,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 10:13:23,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:13:23,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:13:23,817 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:13:23,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:13:23,884 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:13:23,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:13:24,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:13:24,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:24,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:24,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:24,425 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:24,425 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:24,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:13:24,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:24,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:13:24,684 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:13:24,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:13:24,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:13:25,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:13:25,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:13:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:13:25,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:13:25,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:13:25,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2408159] [2023-09-01 10:13:25,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2408159] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:13:25,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:13:25,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:13:25,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005039568] [2023-09-01 10:13:25,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:13:25,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:13:25,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:13:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:13:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 Killed by 15