./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/queue.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/pthread/queue.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --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 04:42:18,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:42:18,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:42:18,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:42:18,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:42:18,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:42:18,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:42:18,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:42:18,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:42:18,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:42:18,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:42:18,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:42:18,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:42:18,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:42:18,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:42:18,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:42:18,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:42:18,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:42:18,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:42:18,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:42:18,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:42:18,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:42:18,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:42:18,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:42:18,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:42:18,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:42:18,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:42:18,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:42:18,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:42:18,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:42:18,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:42:18,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:42:18,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:42:18,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:42:18,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:42:18,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:42:18,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:42:18,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:42:18,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:42:18,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:42:18,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:42:18,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:42:18,745 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:42:18,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:42:18,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:42:18,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:42:18,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:42:18,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:42:18,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:42:18,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:42:18,748 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:42:18,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:42:18,748 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:42:18,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:42:18,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:42:18,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:42:18,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:42:18,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:42:18,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:42:18,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:42:18,749 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:42:18,749 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:42:18,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:42:18,750 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:42:18,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:42:18,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:42:18,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:42:18,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:42:18,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:42:18,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:42:18,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:42:18,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:42:18,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:42:18,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:42:18,752 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:42:18,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:42:18,752 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:42:18,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:42:18,752 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:42:18,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:42:19,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:42:19,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:42:19,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:42:19,061 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:42:19,061 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:42:19,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2023-09-01 04:42:20,349 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:42:20,638 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:42:20,638 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2023-09-01 04:42:20,659 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/506a4044b/6943cb617ccf42a6939998d1f8856511/FLAG9c80cec20 [2023-09-01 04:42:20,681 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/506a4044b/6943cb617ccf42a6939998d1f8856511 [2023-09-01 04:42:20,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:42:20,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:42:20,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:42:20,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:42:20,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:42:20,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:42:20" (1/1) ... [2023-09-01 04:42:20,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748b7171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:20, skipping insertion in model container [2023-09-01 04:42:20,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:42:20" (1/1) ... [2023-09-01 04:42:20,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:42:20,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:42:21,113 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2023-09-01 04:42:21,118 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2023-09-01 04:42:21,123 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2023-09-01 04:42:21,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:42:21,145 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:42:21,192 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2023-09-01 04:42:21,198 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2023-09-01 04:42:21,205 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2023-09-01 04:42:21,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:42:21,300 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:42:21,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21 WrapperNode [2023-09-01 04:42:21,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:42:21,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:42:21,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:42:21,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:42:21,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,369 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 270 [2023-09-01 04:42:21,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:42:21,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:42:21,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:42:21,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:42:21,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,407 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:42:21,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:42:21,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:42:21,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:42:21,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (1/1) ... [2023-09-01 04:42:21,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:42:21,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:42:21,459 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 04:42:21,487 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 04:42:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:42:21,500 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:42:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:42:21,501 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:42:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:42:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:42:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:42:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:42:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 04:42:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:42:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:42:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:42:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:42:21,503 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 04:42:21,698 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:42:21,709 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:42:22,191 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:42:22,205 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:42:22,206 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:42:22,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:42:22 BoogieIcfgContainer [2023-09-01 04:42:22,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:42:22,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:42:22,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:42:22,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:42:22,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:42:20" (1/3) ... [2023-09-01 04:42:22,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3527862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:42:22, skipping insertion in model container [2023-09-01 04:42:22,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:21" (2/3) ... [2023-09-01 04:42:22,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3527862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:42:22, skipping insertion in model container [2023-09-01 04:42:22,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:42:22" (3/3) ... [2023-09-01 04:42:22,224 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-09-01 04:42:22,231 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:42:22,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:42:22,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-09-01 04:42:22,240 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:42:22,330 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:42:22,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 299 transitions, 614 flow [2023-09-01 04:42:22,518 INFO L130 PetriNetUnfolder]: 15/297 cut-off events. [2023-09-01 04:42:22,519 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:42:22,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 297 events. 15/297 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 469 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-09-01 04:42:22,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 299 transitions, 614 flow [2023-09-01 04:42:22,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 284 transitions, 577 flow [2023-09-01 04:42:22,547 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:42:22,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 284 transitions, 577 flow [2023-09-01 04:42:22,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 284 transitions, 577 flow [2023-09-01 04:42:22,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 284 transitions, 577 flow [2023-09-01 04:42:22,637 INFO L130 PetriNetUnfolder]: 14/284 cut-off events. [2023-09-01 04:42:22,638 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:42:22,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 284 events. 14/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 423 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-09-01 04:42:22,652 INFO L119 LiptonReduction]: Number of co-enabled transitions 22068 [2023-09-01 04:42:31,984 INFO L134 LiptonReduction]: Checked pairs total: 48983 [2023-09-01 04:42:31,985 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-09-01 04:42:32,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:42:32,082 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;@288b1211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:42:32,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-09-01 04:42:32,086 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2023-09-01 04:42:32,086 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:42:32,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:32,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:42:32,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:32,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:32,102 INFO L85 PathProgramCache]: Analyzing trace with hash -140422463, now seen corresponding path program 1 times [2023-09-01 04:42:32,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:32,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457713121] [2023-09-01 04:42:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:32,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:33,473 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 04:42:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457713121] [2023-09-01 04:42:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457713121] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:33,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 04:42:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835388637] [2023-09-01 04:42:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:33,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:42:33,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:42:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 04:42:34,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 563 [2023-09-01 04:42:34,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 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 04:42:34,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:34,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 563 [2023-09-01 04:42:34,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:34,955 INFO L130 PetriNetUnfolder]: 3023/5050 cut-off events. [2023-09-01 04:42:34,955 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-09-01 04:42:34,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9959 conditions, 5050 events. 3023/5050 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 26908 event pairs, 2536 based on Foata normal form. 78/3610 useless extension candidates. Maximal degree in co-relation 9738. Up to 4799 conditions per place. [2023-09-01 04:42:35,001 INFO L137 encePairwiseOnDemand]: 553/563 looper letters, 71 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2023-09-01 04:42:35,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 341 flow [2023-09-01 04:42:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:42:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:42:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1656 transitions. [2023-09-01 04:42:35,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49023090586145646 [2023-09-01 04:42:35,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1656 transitions. [2023-09-01 04:42:35,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1656 transitions. [2023-09-01 04:42:35,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:35,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1656 transitions. [2023-09-01 04:42:35,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 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 04:42:35,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 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 04:42:35,052 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 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 04:42:35,054 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 6 states and 1656 transitions. [2023-09-01 04:42:35,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 341 flow [2023-09-01 04:42:35,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:42:35,063 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 218 flow [2023-09-01 04:42:35,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-09-01 04:42:35,069 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2023-09-01 04:42:35,070 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 218 flow [2023-09-01 04:42:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 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 04:42:35,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:35,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:35,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:42:35,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:35,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash -52854247, now seen corresponding path program 1 times [2023-09-01 04:42:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:35,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146535812] [2023-09-01 04:42:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:35,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:35,855 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 04:42:35,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:35,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146535812] [2023-09-01 04:42:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146535812] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:35,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:35,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:42:35,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013462248] [2023-09-01 04:42:35,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:35,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:42:35,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:42:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:42:36,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 563 [2023-09-01 04:42:36,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 04:42:36,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:36,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 563 [2023-09-01 04:42:36,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:37,620 INFO L130 PetriNetUnfolder]: 3240/5399 cut-off events. [2023-09-01 04:42:37,620 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2023-09-01 04:42:37,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 5399 events. 3240/5399 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 29442 event pairs, 792 based on Foata normal form. 27/3869 useless extension candidates. Maximal degree in co-relation 10619. Up to 4845 conditions per place. [2023-09-01 04:42:37,656 INFO L137 encePairwiseOnDemand]: 554/563 looper letters, 134 selfloop transitions, 14 changer transitions 0/154 dead transitions. [2023-09-01 04:42:37,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 668 flow [2023-09-01 04:42:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:42:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:42:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2023-09-01 04:42:37,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032563647128478 [2023-09-01 04:42:37,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2023-09-01 04:42:37,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2023-09-01 04:42:37,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:37,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2023-09-01 04:42:37,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:37,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 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 04:42:37,676 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 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 04:42:37,677 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 218 flow. Second operand 6 states and 1700 transitions. [2023-09-01 04:42:37,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 668 flow [2023-09-01 04:42:37,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 154 transitions, 668 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 04:42:37,682 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 304 flow [2023-09-01 04:42:37,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2023-09-01 04:42:37,684 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2023-09-01 04:42:37,684 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 304 flow [2023-09-01 04:42:37,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 04:42:37,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:37,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:37,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:42:37,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:37,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash -58126417, now seen corresponding path program 2 times [2023-09-01 04:42:37,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:37,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317918117] [2023-09-01 04:42:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:38,147 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 04:42:38,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:38,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317918117] [2023-09-01 04:42:38,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317918117] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:38,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:38,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:42:38,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233784998] [2023-09-01 04:42:38,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:38,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:42:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:38,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:42:38,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:42:38,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 563 [2023-09-01 04:42:38,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 04:42:38,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:38,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 563 [2023-09-01 04:42:38,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:39,240 INFO L130 PetriNetUnfolder]: 3296/5505 cut-off events. [2023-09-01 04:42:39,240 INFO L131 PetriNetUnfolder]: For 1444/1444 co-relation queries the response was YES. [2023-09-01 04:42:39,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 5505 events. 3296/5505 cut-off events. For 1444/1444 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 30353 event pairs, 837 based on Foata normal form. 27/3956 useless extension candidates. Maximal degree in co-relation 11336. Up to 4834 conditions per place. [2023-09-01 04:42:39,282 INFO L137 encePairwiseOnDemand]: 555/563 looper letters, 120 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2023-09-01 04:42:39,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 682 flow [2023-09-01 04:42:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:42:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:42:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1424 transitions. [2023-09-01 04:42:39,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058614564831261 [2023-09-01 04:42:39,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1424 transitions. [2023-09-01 04:42:39,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1424 transitions. [2023-09-01 04:42:39,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:39,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1424 transitions. [2023-09-01 04:42:39,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.8) internal successors, (1424), 5 states have internal predecessors, (1424), 0 states have call successors, (0), 0 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 04:42:39,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 0 states have call successors, (0), 0 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 04:42:39,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 0 states have call successors, (0), 0 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 04:42:39,298 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 304 flow. Second operand 5 states and 1424 transitions. [2023-09-01 04:42:39,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 682 flow [2023-09-01 04:42:39,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 668 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-09-01 04:42:39,307 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 350 flow [2023-09-01 04:42:39,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2023-09-01 04:42:39,309 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2023-09-01 04:42:39,309 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 350 flow [2023-09-01 04:42:39,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 04:42:39,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:39,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:39,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:42:39,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:39,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash -31274464, now seen corresponding path program 1 times [2023-09-01 04:42:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:39,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207887434] [2023-09-01 04:42:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:39,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:39,778 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 04:42:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207887434] [2023-09-01 04:42:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207887434] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:39,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:39,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:42:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550238758] [2023-09-01 04:42:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:39,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:42:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:39,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:42:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:42:40,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 563 [2023-09-01 04:42:40,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 263.8) internal successors, (1319), 5 states have internal predecessors, (1319), 0 states have call successors, (0), 0 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 04:42:40,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:40,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 563 [2023-09-01 04:42:40,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:41,447 INFO L130 PetriNetUnfolder]: 3290/5496 cut-off events. [2023-09-01 04:42:41,447 INFO L131 PetriNetUnfolder]: For 1869/1869 co-relation queries the response was YES. [2023-09-01 04:42:41,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12055 conditions, 5496 events. 3290/5496 cut-off events. For 1869/1869 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 30123 event pairs, 2563 based on Foata normal form. 0/3921 useless extension candidates. Maximal degree in co-relation 11498. Up to 5244 conditions per place. [2023-09-01 04:42:41,477 INFO L137 encePairwiseOnDemand]: 554/563 looper letters, 84 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2023-09-01 04:42:41,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 550 flow [2023-09-01 04:42:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:42:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:42:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1658 transitions. [2023-09-01 04:42:41,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49082297217288334 [2023-09-01 04:42:41,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1658 transitions. [2023-09-01 04:42:41,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1658 transitions. [2023-09-01 04:42:41,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:41,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1658 transitions. [2023-09-01 04:42:41,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 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 04:42:41,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 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 04:42:41,494 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 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 04:42:41,494 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 350 flow. Second operand 6 states and 1658 transitions. [2023-09-01 04:42:41,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 550 flow [2023-09-01 04:42:41,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 526 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 04:42:41,500 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 366 flow [2023-09-01 04:42:41,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-09-01 04:42:41,502 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2023-09-01 04:42:41,502 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 366 flow [2023-09-01 04:42:41,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 263.8) internal successors, (1319), 5 states have internal predecessors, (1319), 0 states have call successors, (0), 0 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 04:42:41,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:41,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:41,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 04:42:41,504 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:41,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1157652466, now seen corresponding path program 1 times [2023-09-01 04:42:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:41,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366419437] [2023-09-01 04:42:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:41,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:41,561 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 04:42:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366419437] [2023-09-01 04:42:41,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366419437] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:41,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:41,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:41,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592637382] [2023-09-01 04:42:41,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:41,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:41,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:41,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 563 [2023-09-01 04:42:41,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 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 04:42:41,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:41,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 563 [2023-09-01 04:42:41,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:42,416 INFO L130 PetriNetUnfolder]: 5604/9352 cut-off events. [2023-09-01 04:42:42,416 INFO L131 PetriNetUnfolder]: For 2568/2568 co-relation queries the response was YES. [2023-09-01 04:42:42,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20302 conditions, 9352 events. 5604/9352 cut-off events. For 2568/2568 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 58733 event pairs, 2548 based on Foata normal form. 0/6921 useless extension candidates. Maximal degree in co-relation 19459. Up to 5146 conditions per place. [2023-09-01 04:42:42,491 INFO L137 encePairwiseOnDemand]: 558/563 looper letters, 160 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-09-01 04:42:42,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 169 transitions, 914 flow [2023-09-01 04:42:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2023-09-01 04:42:42,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808170515097691 [2023-09-01 04:42:42,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2023-09-01 04:42:42,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2023-09-01 04:42:42,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:42,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2023-09-01 04:42:42,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 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 04:42:42,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:42:42,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:42:42,504 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 366 flow. Second operand 3 states and 981 transitions. [2023-09-01 04:42:42,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 169 transitions, 914 flow [2023-09-01 04:42:42,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 169 transitions, 898 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 04:42:42,513 INFO L231 Difference]: Finished difference. Result has 99 places, 98 transitions, 366 flow [2023-09-01 04:42:42,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=99, PETRI_TRANSITIONS=98} [2023-09-01 04:42:42,517 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2023-09-01 04:42:42,517 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 98 transitions, 366 flow [2023-09-01 04:42:42,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 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 04:42:42,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:42,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:42,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 04:42:42,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:42,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:42,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1521764710, now seen corresponding path program 1 times [2023-09-01 04:42:42,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:42,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457159496] [2023-09-01 04:42:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:42,569 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 04:42:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457159496] [2023-09-01 04:42:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457159496] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:42,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:42,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:42,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411305191] [2023-09-01 04:42:42,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:42,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:42,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:42,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:42,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:42,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 563 [2023-09-01 04:42:42,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 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 04:42:42,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:42,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 563 [2023-09-01 04:42:42,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:43,278 INFO L130 PetriNetUnfolder]: 4291/7369 cut-off events. [2023-09-01 04:42:43,279 INFO L131 PetriNetUnfolder]: For 1847/1847 co-relation queries the response was YES. [2023-09-01 04:42:43,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16181 conditions, 7369 events. 4291/7369 cut-off events. For 1847/1847 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 42309 event pairs, 2314 based on Foata normal form. 0/5368 useless extension candidates. Maximal degree in co-relation 15939. Up to 4775 conditions per place. [2023-09-01 04:42:43,317 INFO L137 encePairwiseOnDemand]: 559/563 looper letters, 113 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2023-09-01 04:42:43,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 122 transitions, 635 flow [2023-09-01 04:42:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2023-09-01 04:42:43,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606867969212552 [2023-09-01 04:42:43,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2023-09-01 04:42:43,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2023-09-01 04:42:43,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:43,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2023-09-01 04:42:43,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 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 04:42:43,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:42:43,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:42:43,327 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 366 flow. Second operand 3 states and 947 transitions. [2023-09-01 04:42:43,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 122 transitions, 635 flow [2023-09-01 04:42:43,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 583 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-09-01 04:42:43,332 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 277 flow [2023-09-01 04:42:43,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2023-09-01 04:42:43,333 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2023-09-01 04:42:43,334 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 277 flow [2023-09-01 04:42:43,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 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 04:42:43,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:43,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:43,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 04:42:43,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:43,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:43,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1746385790, now seen corresponding path program 1 times [2023-09-01 04:42:43,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:43,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603923752] [2023-09-01 04:42:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:43,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:43,695 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 04:42:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603923752] [2023-09-01 04:42:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603923752] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:43,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:42:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343055209] [2023-09-01 04:42:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:43,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:42:43,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:42:43,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:42:43,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 563 [2023-09-01 04:42:43,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 261.42857142857144) internal successors, (1830), 7 states have internal predecessors, (1830), 0 states have call successors, (0), 0 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 04:42:43,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:43,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 563 [2023-09-01 04:42:43,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:44,727 INFO L130 PetriNetUnfolder]: 4337/7348 cut-off events. [2023-09-01 04:42:44,728 INFO L131 PetriNetUnfolder]: For 1020/1020 co-relation queries the response was YES. [2023-09-01 04:42:44,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15749 conditions, 7348 events. 4337/7348 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 40729 event pairs, 1599 based on Foata normal form. 42/5486 useless extension candidates. Maximal degree in co-relation 15579. Up to 6505 conditions per place. [2023-09-01 04:42:44,770 INFO L137 encePairwiseOnDemand]: 555/563 looper letters, 98 selfloop transitions, 9 changer transitions 0/114 dead transitions. [2023-09-01 04:42:44,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 579 flow [2023-09-01 04:42:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:42:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:42:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1398 transitions. [2023-09-01 04:42:44,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966252220248668 [2023-09-01 04:42:44,775 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1398 transitions. [2023-09-01 04:42:44,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1398 transitions. [2023-09-01 04:42:44,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:44,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1398 transitions. [2023-09-01 04:42:44,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.6) internal successors, (1398), 5 states have internal predecessors, (1398), 0 states have call successors, (0), 0 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 04:42:44,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 0 states have call successors, (0), 0 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 04:42:44,784 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 0 states have call successors, (0), 0 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 04:42:44,785 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 277 flow. Second operand 5 states and 1398 transitions. [2023-09-01 04:42:44,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 579 flow [2023-09-01 04:42:44,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:44,791 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 278 flow [2023-09-01 04:42:44,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-09-01 04:42:44,792 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2023-09-01 04:42:44,792 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 278 flow [2023-09-01 04:42:44,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 261.42857142857144) internal successors, (1830), 7 states have internal predecessors, (1830), 0 states have call successors, (0), 0 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 04:42:44,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:44,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:42:44,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:44,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash -37750970, now seen corresponding path program 1 times [2023-09-01 04:42:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:44,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79174885] [2023-09-01 04:42:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:44,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:42:44,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:44,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79174885] [2023-09-01 04:42:44,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79174885] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:44,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:44,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:44,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336621547] [2023-09-01 04:42:44,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:44,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:44,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:44,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:44,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:44,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 563 [2023-09-01 04:42:44,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 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 04:42:44,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:44,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 563 [2023-09-01 04:42:44,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:45,555 INFO L130 PetriNetUnfolder]: 3976/6897 cut-off events. [2023-09-01 04:42:45,556 INFO L131 PetriNetUnfolder]: For 972/980 co-relation queries the response was YES. [2023-09-01 04:42:45,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14616 conditions, 6897 events. 3976/6897 cut-off events. For 972/980 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 40292 event pairs, 417 based on Foata normal form. 4/5165 useless extension candidates. Maximal degree in co-relation 14439. Up to 5405 conditions per place. [2023-09-01 04:42:45,584 INFO L137 encePairwiseOnDemand]: 559/563 looper letters, 109 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2023-09-01 04:42:45,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 121 transitions, 601 flow [2023-09-01 04:42:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 944 transitions. [2023-09-01 04:42:45,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5589105979869745 [2023-09-01 04:42:45,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 944 transitions. [2023-09-01 04:42:45,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 944 transitions. [2023-09-01 04:42:45,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:45,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 944 transitions. [2023-09-01 04:42:45,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 04:42:45,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:42:45,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:42:45,594 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 278 flow. Second operand 3 states and 944 transitions. [2023-09-01 04:42:45,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 121 transitions, 601 flow [2023-09-01 04:42:45,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 121 transitions, 575 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 04:42:45,597 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 272 flow [2023-09-01 04:42:45,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-09-01 04:42:45,598 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2023-09-01 04:42:45,598 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 272 flow [2023-09-01 04:42:45,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 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 04:42:45,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:45,600 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:45,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 04:42:45,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:45,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash -37751111, now seen corresponding path program 1 times [2023-09-01 04:42:45,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:45,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346015135] [2023-09-01 04:42:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:45,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:45,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:45,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346015135] [2023-09-01 04:42:45,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346015135] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:42:45,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846624239] [2023-09-01 04:42:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:45,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:42:45,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:42:45,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:42:45,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:42:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:45,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:42:45,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:42:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:45,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:42:45,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846624239] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:45,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:42:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:42:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926384319] [2023-09-01 04:42:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:42:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:42:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:42:45,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 563 [2023-09-01 04:42:45,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 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 04:42:45,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:45,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 563 [2023-09-01 04:42:45,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:46,491 INFO L130 PetriNetUnfolder]: 3812/6593 cut-off events. [2023-09-01 04:42:46,492 INFO L131 PetriNetUnfolder]: For 2160/2164 co-relation queries the response was YES. [2023-09-01 04:42:46,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14623 conditions, 6593 events. 3812/6593 cut-off events. For 2160/2164 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 38551 event pairs, 101 based on Foata normal form. 116/5123 useless extension candidates. Maximal degree in co-relation 14467. Up to 3123 conditions per place. [2023-09-01 04:42:46,537 INFO L137 encePairwiseOnDemand]: 560/563 looper letters, 165 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2023-09-01 04:42:46,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 175 transitions, 824 flow [2023-09-01 04:42:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:42:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:42:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1283 transitions. [2023-09-01 04:42:46,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697158081705151 [2023-09-01 04:42:46,541 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1283 transitions. [2023-09-01 04:42:46,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1283 transitions. [2023-09-01 04:42:46,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:46,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1283 transitions. [2023-09-01 04:42:46,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.75) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 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 04:42:46,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 563.0) internal successors, (2815), 5 states have internal predecessors, (2815), 0 states have call successors, (0), 0 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 04:42:46,548 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 563.0) internal successors, (2815), 5 states have internal predecessors, (2815), 0 states have call successors, (0), 0 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 04:42:46,548 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 272 flow. Second operand 4 states and 1283 transitions. [2023-09-01 04:42:46,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 175 transitions, 824 flow [2023-09-01 04:42:46,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 175 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:46,554 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 268 flow [2023-09-01 04:42:46,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2023-09-01 04:42:46,555 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2023-09-01 04:42:46,555 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 268 flow [2023-09-01 04:42:46,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 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 04:42:46,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:46,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:46,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 04:42:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:42:46,763 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:46,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1489907772, now seen corresponding path program 1 times [2023-09-01 04:42:46,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:46,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139931233] [2023-09-01 04:42:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:46,809 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 04:42:46,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139931233] [2023-09-01 04:42:46,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139931233] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:46,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:46,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:46,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939239728] [2023-09-01 04:42:46,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:46,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:46,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:46,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 563 [2023-09-01 04:42:46,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 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 04:42:46,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:46,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 563 [2023-09-01 04:42:46,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:47,519 INFO L130 PetriNetUnfolder]: 4281/7604 cut-off events. [2023-09-01 04:42:47,520 INFO L131 PetriNetUnfolder]: For 3017/3017 co-relation queries the response was YES. [2023-09-01 04:42:47,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16842 conditions, 7604 events. 4281/7604 cut-off events. For 3017/3017 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 46422 event pairs, 1887 based on Foata normal form. 0/5944 useless extension candidates. Maximal degree in co-relation 16685. Up to 6161 conditions per place. [2023-09-01 04:42:47,567 INFO L137 encePairwiseOnDemand]: 556/563 looper letters, 116 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2023-09-01 04:42:47,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 126 transitions, 622 flow [2023-09-01 04:42:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-09-01 04:42:47,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612788632326821 [2023-09-01 04:42:47,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-09-01 04:42:47,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-09-01 04:42:47,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:47,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-09-01 04:42:47,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 04:42:47,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:42:47,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:42:47,576 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 268 flow. Second operand 3 states and 948 transitions. [2023-09-01 04:42:47,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 126 transitions, 622 flow [2023-09-01 04:42:47,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 126 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:42:47,581 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 285 flow [2023-09-01 04:42:47,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-09-01 04:42:47,583 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2023-09-01 04:42:47,583 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 285 flow [2023-09-01 04:42:47,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 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 04:42:47,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:47,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:47,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:42:47,584 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:47,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1068716112, now seen corresponding path program 1 times [2023-09-01 04:42:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083092212] [2023-09-01 04:42:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:47,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:48,689 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 04:42:48,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:48,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083092212] [2023-09-01 04:42:48,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083092212] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:48,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:48,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-09-01 04:42:48,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336551353] [2023-09-01 04:42:48,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:48,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:42:48,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:48,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:42:48,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:42:50,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 563 [2023-09-01 04:42:50,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 285 flow. Second operand has 16 states, 16 states have (on average 240.1875) internal successors, (3843), 16 states have internal predecessors, (3843), 0 states have call successors, (0), 0 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 04:42:50,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:50,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 563 [2023-09-01 04:42:50,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:52,042 INFO L130 PetriNetUnfolder]: 4531/7724 cut-off events. [2023-09-01 04:42:52,042 INFO L131 PetriNetUnfolder]: For 2544/2544 co-relation queries the response was YES. [2023-09-01 04:42:52,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18089 conditions, 7724 events. 4531/7724 cut-off events. For 2544/2544 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 42863 event pairs, 3823 based on Foata normal form. 0/6226 useless extension candidates. Maximal degree in co-relation 17933. Up to 7306 conditions per place. [2023-09-01 04:42:52,087 INFO L137 encePairwiseOnDemand]: 544/563 looper letters, 73 selfloop transitions, 32 changer transitions 1/113 dead transitions. [2023-09-01 04:42:52,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 612 flow [2023-09-01 04:42:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:42:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:42:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3925 transitions. [2023-09-01 04:42:52,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43572380106571934 [2023-09-01 04:42:52,098 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3925 transitions. [2023-09-01 04:42:52,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3925 transitions. [2023-09-01 04:42:52,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:52,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3925 transitions. [2023-09-01 04:42:52,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 245.3125) internal successors, (3925), 16 states have internal predecessors, (3925), 0 states have call successors, (0), 0 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 04:42:52,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 563.0) internal successors, (9571), 17 states have internal predecessors, (9571), 0 states have call successors, (0), 0 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 04:42:52,119 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 563.0) internal successors, (9571), 17 states have internal predecessors, (9571), 0 states have call successors, (0), 0 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 04:42:52,120 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 285 flow. Second operand 16 states and 3925 transitions. [2023-09-01 04:42:52,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 612 flow [2023-09-01 04:42:52,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:52,126 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 493 flow [2023-09-01 04:42:52,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=493, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2023-09-01 04:42:52,127 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2023-09-01 04:42:52,127 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 493 flow [2023-09-01 04:42:52,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 240.1875) internal successors, (3843), 16 states have internal predecessors, (3843), 0 states have call successors, (0), 0 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 04:42:52,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:52,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:52,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:42:52,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:52,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:52,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1068716073, now seen corresponding path program 1 times [2023-09-01 04:42:52,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:52,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942598700] [2023-09-01 04:42:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:52,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:52,658 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 04:42:52,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:52,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942598700] [2023-09-01 04:42:52,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942598700] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:52,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:52,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 04:42:52,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206477980] [2023-09-01 04:42:52,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:52,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:42:52,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:42:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:42:53,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 563 [2023-09-01 04:42:53,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 493 flow. Second operand has 12 states, 12 states have (on average 257.5833333333333) internal successors, (3091), 12 states have internal predecessors, (3091), 0 states have call successors, (0), 0 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 04:42:53,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:53,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 563 [2023-09-01 04:42:53,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:55,245 INFO L130 PetriNetUnfolder]: 5257/9072 cut-off events. [2023-09-01 04:42:55,245 INFO L131 PetriNetUnfolder]: For 3738/3738 co-relation queries the response was YES. [2023-09-01 04:42:55,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22756 conditions, 9072 events. 5257/9072 cut-off events. For 3738/3738 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 53066 event pairs, 3782 based on Foata normal form. 0/7498 useless extension candidates. Maximal degree in co-relation 18470. Up to 6512 conditions per place. [2023-09-01 04:42:55,311 INFO L137 encePairwiseOnDemand]: 549/563 looper letters, 149 selfloop transitions, 36 changer transitions 6/198 dead transitions. [2023-09-01 04:42:55,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 198 transitions, 1254 flow [2023-09-01 04:42:55,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 04:42:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 04:42:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3487 transitions. [2023-09-01 04:42:55,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764312064489684 [2023-09-01 04:42:55,322 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3487 transitions. [2023-09-01 04:42:55,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3487 transitions. [2023-09-01 04:42:55,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:55,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3487 transitions. [2023-09-01 04:42:55,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 268.2307692307692) internal successors, (3487), 13 states have internal predecessors, (3487), 0 states have call successors, (0), 0 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 04:42:55,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 563.0) internal successors, (7882), 14 states have internal predecessors, (7882), 0 states have call successors, (0), 0 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 04:42:55,343 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 563.0) internal successors, (7882), 14 states have internal predecessors, (7882), 0 states have call successors, (0), 0 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 04:42:55,343 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 493 flow. Second operand 13 states and 3487 transitions. [2023-09-01 04:42:55,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 198 transitions, 1254 flow [2023-09-01 04:42:55,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 198 transitions, 1198 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-09-01 04:42:55,357 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 577 flow [2023-09-01 04:42:55,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=577, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2023-09-01 04:42:55,359 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 50 predicate places. [2023-09-01 04:42:55,359 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 577 flow [2023-09-01 04:42:55,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 257.5833333333333) internal successors, (3091), 12 states have internal predecessors, (3091), 0 states have call successors, (0), 0 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 04:42:55,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:55,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:55,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 04:42:55,361 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:42:55,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1097553174, now seen corresponding path program 1 times [2023-09-01 04:42:55,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:55,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512571514] [2023-09-01 04:42:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:55,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:56,848 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 04:42:56,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:56,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512571514] [2023-09-01 04:42:56,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512571514] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:56,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:56,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 04:42:56,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24733785] [2023-09-01 04:42:56,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:56,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 04:42:56,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:56,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 04:42:56,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-09-01 04:42:59,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 563 [2023-09-01 04:42:59,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 577 flow. Second operand has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 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 04:42:59,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:59,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 563 [2023-09-01 04:42:59,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:02,374 INFO L130 PetriNetUnfolder]: 6057/10486 cut-off events. [2023-09-01 04:43:02,375 INFO L131 PetriNetUnfolder]: For 6117/6117 co-relation queries the response was YES. [2023-09-01 04:43:02,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28231 conditions, 10486 events. 6057/10486 cut-off events. For 6117/6117 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 62815 event pairs, 2647 based on Foata normal form. 0/8878 useless extension candidates. Maximal degree in co-relation 19078. Up to 8367 conditions per place. [2023-09-01 04:43:02,450 INFO L137 encePairwiseOnDemand]: 545/563 looper letters, 285 selfloop transitions, 53 changer transitions 3/348 dead transitions. [2023-09-01 04:43:02,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 348 transitions, 2297 flow [2023-09-01 04:43:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 04:43:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 04:43:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6169 transitions. [2023-09-01 04:43:02,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43829484902309057 [2023-09-01 04:43:02,465 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6169 transitions. [2023-09-01 04:43:02,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6169 transitions. [2023-09-01 04:43:02,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:02,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6169 transitions. [2023-09-01 04:43:02,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 246.76) internal successors, (6169), 25 states have internal predecessors, (6169), 0 states have call successors, (0), 0 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 04:43:02,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 563.0) internal successors, (14638), 26 states have internal predecessors, (14638), 0 states have call successors, (0), 0 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 04:43:02,503 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 563.0) internal successors, (14638), 26 states have internal predecessors, (14638), 0 states have call successors, (0), 0 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 04:43:02,504 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 577 flow. Second operand 25 states and 6169 transitions. [2023-09-01 04:43:02,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 348 transitions, 2297 flow [2023-09-01 04:43:02,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 348 transitions, 2244 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-09-01 04:43:02,545 INFO L231 Difference]: Finished difference. Result has 151 places, 131 transitions, 793 flow [2023-09-01 04:43:02,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=793, PETRI_PLACES=151, PETRI_TRANSITIONS=131} [2023-09-01 04:43:02,547 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 74 predicate places. [2023-09-01 04:43:02,548 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 131 transitions, 793 flow [2023-09-01 04:43:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 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 04:43:02,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:02,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:02,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 04:43:02,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:02,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash -746022104, now seen corresponding path program 2 times [2023-09-01 04:43:02,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:02,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117506749] [2023-09-01 04:43:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:03,516 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 04:43:03,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:03,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117506749] [2023-09-01 04:43:03,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117506749] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:03,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:03,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 04:43:03,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697017487] [2023-09-01 04:43:03,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:03,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 04:43:03,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 04:43:03,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-09-01 04:43:04,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 563 [2023-09-01 04:43:04,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 131 transitions, 793 flow. Second operand has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 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 04:43:04,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:04,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 563 [2023-09-01 04:43:04,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:06,704 INFO L130 PetriNetUnfolder]: 6582/11392 cut-off events. [2023-09-01 04:43:06,704 INFO L131 PetriNetUnfolder]: For 6842/6842 co-relation queries the response was YES. [2023-09-01 04:43:06,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31054 conditions, 11392 events. 6582/11392 cut-off events. For 6842/6842 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 69851 event pairs, 2010 based on Foata normal form. 0/9738 useless extension candidates. Maximal degree in co-relation 24627. Up to 7146 conditions per place. [2023-09-01 04:43:06,799 INFO L137 encePairwiseOnDemand]: 544/563 looper letters, 255 selfloop transitions, 72 changer transitions 3/337 dead transitions. [2023-09-01 04:43:06,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 337 transitions, 2331 flow [2023-09-01 04:43:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 04:43:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 04:43:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5678 transitions. [2023-09-01 04:43:06,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43848945864545524 [2023-09-01 04:43:06,809 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5678 transitions. [2023-09-01 04:43:06,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5678 transitions. [2023-09-01 04:43:06,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:06,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5678 transitions. [2023-09-01 04:43:06,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 246.8695652173913) internal successors, (5678), 23 states have internal predecessors, (5678), 0 states have call successors, (0), 0 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 04:43:06,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 563.0) internal successors, (13512), 24 states have internal predecessors, (13512), 0 states have call successors, (0), 0 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 04:43:06,833 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 563.0) internal successors, (13512), 24 states have internal predecessors, (13512), 0 states have call successors, (0), 0 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 04:43:06,833 INFO L175 Difference]: Start difference. First operand has 151 places, 131 transitions, 793 flow. Second operand 23 states and 5678 transitions. [2023-09-01 04:43:06,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 337 transitions, 2331 flow [2023-09-01 04:43:06,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 337 transitions, 2277 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-09-01 04:43:06,900 INFO L231 Difference]: Finished difference. Result has 176 places, 138 transitions, 987 flow [2023-09-01 04:43:06,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=987, PETRI_PLACES=176, PETRI_TRANSITIONS=138} [2023-09-01 04:43:06,901 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 99 predicate places. [2023-09-01 04:43:06,901 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 138 transitions, 987 flow [2023-09-01 04:43:06,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 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 04:43:06,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:06,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:06,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 04:43:06,903 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:06,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash -746022143, now seen corresponding path program 1 times [2023-09-01 04:43:06,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:06,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471254570] [2023-09-01 04:43:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:06,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:07,408 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 04:43:07,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:07,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471254570] [2023-09-01 04:43:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471254570] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 04:43:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507449387] [2023-09-01 04:43:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:07,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 04:43:07,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 04:43:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-09-01 04:43:08,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 563 [2023-09-01 04:43:08,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 138 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 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 04:43:08,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:08,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 563 [2023-09-01 04:43:08,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:10,167 INFO L130 PetriNetUnfolder]: 7070/12291 cut-off events. [2023-09-01 04:43:10,167 INFO L131 PetriNetUnfolder]: For 9783/9783 co-relation queries the response was YES. [2023-09-01 04:43:10,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35825 conditions, 12291 events. 7070/12291 cut-off events. For 9783/9783 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 76770 event pairs, 1985 based on Foata normal form. 0/10579 useless extension candidates. Maximal degree in co-relation 26404. Up to 6551 conditions per place. [2023-09-01 04:43:10,289 INFO L137 encePairwiseOnDemand]: 548/563 looper letters, 200 selfloop transitions, 57 changer transitions 3/267 dead transitions. [2023-09-01 04:43:10,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 267 transitions, 2082 flow [2023-09-01 04:43:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 04:43:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 04:43:10,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3981 transitions. [2023-09-01 04:43:10,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714031971580817 [2023-09-01 04:43:10,295 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3981 transitions. [2023-09-01 04:43:10,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3981 transitions. [2023-09-01 04:43:10,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:10,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3981 transitions. [2023-09-01 04:43:10,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 265.4) internal successors, (3981), 15 states have internal predecessors, (3981), 0 states have call successors, (0), 0 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 04:43:10,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 563.0) internal successors, (9008), 16 states have internal predecessors, (9008), 0 states have call successors, (0), 0 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 04:43:10,309 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 563.0) internal successors, (9008), 16 states have internal predecessors, (9008), 0 states have call successors, (0), 0 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 04:43:10,309 INFO L175 Difference]: Start difference. First operand has 176 places, 138 transitions, 987 flow. Second operand 15 states and 3981 transitions. [2023-09-01 04:43:10,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 267 transitions, 2082 flow [2023-09-01 04:43:10,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 267 transitions, 1966 flow, removed 11 selfloop flow, removed 14 redundant places. [2023-09-01 04:43:10,410 INFO L231 Difference]: Finished difference. Result has 180 places, 146 transitions, 1085 flow [2023-09-01 04:43:10,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1085, PETRI_PLACES=180, PETRI_TRANSITIONS=146} [2023-09-01 04:43:10,411 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 103 predicate places. [2023-09-01 04:43:10,411 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 146 transitions, 1085 flow [2023-09-01 04:43:10,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 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 04:43:10,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:10,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:10,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 04:43:10,413 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:10,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1542034382, now seen corresponding path program 3 times [2023-09-01 04:43:10,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:10,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792830618] [2023-09-01 04:43:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:11,479 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 04:43:11,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:11,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792830618] [2023-09-01 04:43:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792830618] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:11,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:11,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 04:43:11,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698728103] [2023-09-01 04:43:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:11,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 04:43:11,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 04:43:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-09-01 04:43:12,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 563 [2023-09-01 04:43:12,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 146 transitions, 1085 flow. Second operand has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 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 04:43:12,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:12,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 563 [2023-09-01 04:43:12,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:14,711 INFO L130 PetriNetUnfolder]: 7020/12185 cut-off events. [2023-09-01 04:43:14,712 INFO L131 PetriNetUnfolder]: For 11901/11901 co-relation queries the response was YES. [2023-09-01 04:43:14,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36570 conditions, 12185 events. 7020/12185 cut-off events. For 11901/11901 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 76151 event pairs, 1902 based on Foata normal form. 0/10501 useless extension candidates. Maximal degree in co-relation 35426. Up to 6858 conditions per place. [2023-09-01 04:43:14,834 INFO L137 encePairwiseOnDemand]: 545/563 looper letters, 263 selfloop transitions, 79 changer transitions 3/352 dead transitions. [2023-09-01 04:43:14,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 352 transitions, 2657 flow [2023-09-01 04:43:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 04:43:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 04:43:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5919 transitions. [2023-09-01 04:43:14,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380550621669627 [2023-09-01 04:43:14,839 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5919 transitions. [2023-09-01 04:43:14,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5919 transitions. [2023-09-01 04:43:14,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:14,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5919 transitions. [2023-09-01 04:43:14,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 246.625) internal successors, (5919), 24 states have internal predecessors, (5919), 0 states have call successors, (0), 0 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 04:43:14,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 563.0) internal successors, (14075), 25 states have internal predecessors, (14075), 0 states have call successors, (0), 0 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 04:43:14,856 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 563.0) internal successors, (14075), 25 states have internal predecessors, (14075), 0 states have call successors, (0), 0 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 04:43:14,856 INFO L175 Difference]: Start difference. First operand has 180 places, 146 transitions, 1085 flow. Second operand 24 states and 5919 transitions. [2023-09-01 04:43:14,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 352 transitions, 2657 flow [2023-09-01 04:43:14,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 352 transitions, 2595 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-09-01 04:43:14,947 INFO L231 Difference]: Finished difference. Result has 198 places, 146 transitions, 1190 flow [2023-09-01 04:43:14,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1190, PETRI_PLACES=198, PETRI_TRANSITIONS=146} [2023-09-01 04:43:14,948 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 121 predicate places. [2023-09-01 04:43:14,948 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 146 transitions, 1190 flow [2023-09-01 04:43:14,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 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 04:43:14,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:14,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:14,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 04:43:14,950 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:14,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1229536916, now seen corresponding path program 4 times [2023-09-01 04:43:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442941166] [2023-09-01 04:43:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:14,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:16,179 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 04:43:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442941166] [2023-09-01 04:43:16,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442941166] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:16,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:16,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 04:43:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883195255] [2023-09-01 04:43:16,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:16,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 04:43:16,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:16,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 04:43:16,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-09-01 04:43:17,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 563 [2023-09-01 04:43:17,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 146 transitions, 1190 flow. Second operand has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 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 04:43:17,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:17,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 563 [2023-09-01 04:43:17,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:19,653 INFO L130 PetriNetUnfolder]: 6972/12115 cut-off events. [2023-09-01 04:43:19,654 INFO L131 PetriNetUnfolder]: For 12039/12039 co-relation queries the response was YES. [2023-09-01 04:43:19,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36528 conditions, 12115 events. 6972/12115 cut-off events. For 12039/12039 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 76236 event pairs, 1587 based on Foata normal form. 0/10495 useless extension candidates. Maximal degree in co-relation 34431. Up to 6292 conditions per place. [2023-09-01 04:43:19,742 INFO L137 encePairwiseOnDemand]: 545/563 looper letters, 201 selfloop transitions, 72 changer transitions 3/283 dead transitions. [2023-09-01 04:43:19,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 283 transitions, 2327 flow [2023-09-01 04:43:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:43:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:43:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3965 transitions. [2023-09-01 04:43:19,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44016429840142096 [2023-09-01 04:43:19,746 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3965 transitions. [2023-09-01 04:43:19,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3965 transitions. [2023-09-01 04:43:19,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:19,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3965 transitions. [2023-09-01 04:43:19,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 247.8125) internal successors, (3965), 16 states have internal predecessors, (3965), 0 states have call successors, (0), 0 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 04:43:19,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 563.0) internal successors, (9571), 17 states have internal predecessors, (9571), 0 states have call successors, (0), 0 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 04:43:19,761 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 563.0) internal successors, (9571), 17 states have internal predecessors, (9571), 0 states have call successors, (0), 0 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 04:43:19,761 INFO L175 Difference]: Start difference. First operand has 198 places, 146 transitions, 1190 flow. Second operand 16 states and 3965 transitions. [2023-09-01 04:43:19,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 283 transitions, 2327 flow [2023-09-01 04:43:19,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 283 transitions, 2169 flow, removed 4 selfloop flow, removed 22 redundant places. [2023-09-01 04:43:19,860 INFO L231 Difference]: Finished difference. Result has 193 places, 149 transitions, 1222 flow [2023-09-01 04:43:19,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1222, PETRI_PLACES=193, PETRI_TRANSITIONS=149} [2023-09-01 04:43:19,860 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 116 predicate places. [2023-09-01 04:43:19,861 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 149 transitions, 1222 flow [2023-09-01 04:43:19,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 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 04:43:19,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:19,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:19,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 04:43:19,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:19,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1229126825, now seen corresponding path program 2 times [2023-09-01 04:43:19,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:19,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740892894] [2023-09-01 04:43:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:19,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:20,426 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 04:43:20,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:20,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740892894] [2023-09-01 04:43:20,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740892894] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:20,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:20,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 04:43:20,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187275607] [2023-09-01 04:43:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:20,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 04:43:20,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:20,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 04:43:20,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-09-01 04:43:21,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 563 [2023-09-01 04:43:21,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 149 transitions, 1222 flow. Second operand has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 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 04:43:21,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:21,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 563 [2023-09-01 04:43:21,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:23,391 INFO L130 PetriNetUnfolder]: 7122/12417 cut-off events. [2023-09-01 04:43:23,391 INFO L131 PetriNetUnfolder]: For 14450/14450 co-relation queries the response was YES. [2023-09-01 04:43:23,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38523 conditions, 12417 events. 7122/12417 cut-off events. For 14450/14450 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 78458 event pairs, 1996 based on Foata normal form. 0/10797 useless extension candidates. Maximal degree in co-relation 37283. Up to 6577 conditions per place. [2023-09-01 04:43:23,459 INFO L137 encePairwiseOnDemand]: 550/563 looper letters, 184 selfloop transitions, 49 changer transitions 3/243 dead transitions. [2023-09-01 04:43:23,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 243 transitions, 2112 flow [2023-09-01 04:43:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 04:43:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 04:43:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3187 transitions. [2023-09-01 04:43:23,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47172883362936646 [2023-09-01 04:43:23,464 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3187 transitions. [2023-09-01 04:43:23,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3187 transitions. [2023-09-01 04:43:23,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:23,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3187 transitions. [2023-09-01 04:43:23,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 265.5833333333333) internal successors, (3187), 12 states have internal predecessors, (3187), 0 states have call successors, (0), 0 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 04:43:23,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 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 04:43:23,474 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 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 04:43:23,475 INFO L175 Difference]: Start difference. First operand has 193 places, 149 transitions, 1222 flow. Second operand 12 states and 3187 transitions. [2023-09-01 04:43:23,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 243 transitions, 2112 flow [2023-09-01 04:43:23,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 243 transitions, 2025 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-09-01 04:43:23,626 INFO L231 Difference]: Finished difference. Result has 197 places, 152 transitions, 1297 flow [2023-09-01 04:43:23,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1297, PETRI_PLACES=197, PETRI_TRANSITIONS=152} [2023-09-01 04:43:23,627 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 120 predicate places. [2023-09-01 04:43:23,627 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 152 transitions, 1297 flow [2023-09-01 04:43:23,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 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 04:43:23,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:23,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:23,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 04:43:23,628 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:23,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1229213315, now seen corresponding path program 3 times [2023-09-01 04:43:23,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:23,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845469216] [2023-09-01 04:43:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:23,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:24,241 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 04:43:24,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845469216] [2023-09-01 04:43:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845469216] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:24,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:24,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 04:43:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292460803] [2023-09-01 04:43:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:24,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 04:43:24,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 04:43:24,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-09-01 04:43:25,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 563 [2023-09-01 04:43:25,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 152 transitions, 1297 flow. Second operand has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 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 04:43:25,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:25,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 563 [2023-09-01 04:43:25,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:27,225 INFO L130 PetriNetUnfolder]: 7072/12333 cut-off events. [2023-09-01 04:43:27,225 INFO L131 PetriNetUnfolder]: For 18372/18372 co-relation queries the response was YES. [2023-09-01 04:43:27,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39046 conditions, 12333 events. 7072/12333 cut-off events. For 18372/18372 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 77811 event pairs, 1960 based on Foata normal form. 0/10781 useless extension candidates. Maximal degree in co-relation 37905. Up to 6359 conditions per place. [2023-09-01 04:43:27,298 INFO L137 encePairwiseOnDemand]: 551/563 looper letters, 182 selfloop transitions, 49 changer transitions 3/241 dead transitions. [2023-09-01 04:43:27,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 241 transitions, 2143 flow [2023-09-01 04:43:27,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 04:43:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 04:43:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3184 transitions. [2023-09-01 04:43:27,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712847838957963 [2023-09-01 04:43:27,302 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3184 transitions. [2023-09-01 04:43:27,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3184 transitions. [2023-09-01 04:43:27,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:27,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3184 transitions. [2023-09-01 04:43:27,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 265.3333333333333) internal successors, (3184), 12 states have internal predecessors, (3184), 0 states have call successors, (0), 0 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 04:43:27,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 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 04:43:27,311 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 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 04:43:27,311 INFO L175 Difference]: Start difference. First operand has 197 places, 152 transitions, 1297 flow. Second operand 12 states and 3184 transitions. [2023-09-01 04:43:27,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 241 transitions, 2143 flow [2023-09-01 04:43:27,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 241 transitions, 2085 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 04:43:27,467 INFO L231 Difference]: Finished difference. Result has 201 places, 152 transitions, 1337 flow [2023-09-01 04:43:27,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1337, PETRI_PLACES=201, PETRI_TRANSITIONS=152} [2023-09-01 04:43:27,468 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 124 predicate places. [2023-09-01 04:43:27,468 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 152 transitions, 1337 flow [2023-09-01 04:43:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 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 04:43:27,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:27,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:27,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 04:43:27,469 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:27,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash 529053456, now seen corresponding path program 1 times [2023-09-01 04:43:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:27,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619466666] [2023-09-01 04:43:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:27,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:43:27,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:27,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619466666] [2023-09-01 04:43:27,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619466666] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:27,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:27,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:43:27,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388560794] [2023-09-01 04:43:27,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:27,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:27,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:27,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:27,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:27,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 563 [2023-09-01 04:43:27,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 152 transitions, 1337 flow. Second operand has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 04:43:27,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:27,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 563 [2023-09-01 04:43:27,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:28,500 INFO L130 PetriNetUnfolder]: 6236/11124 cut-off events. [2023-09-01 04:43:28,501 INFO L131 PetriNetUnfolder]: For 20668/20714 co-relation queries the response was YES. [2023-09-01 04:43:28,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36008 conditions, 11124 events. 6236/11124 cut-off events. For 20668/20714 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 71194 event pairs, 2553 based on Foata normal form. 46/9937 useless extension candidates. Maximal degree in co-relation 34871. Up to 7128 conditions per place. [2023-09-01 04:43:28,614 INFO L137 encePairwiseOnDemand]: 558/563 looper letters, 161 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2023-09-01 04:43:28,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 179 transitions, 1757 flow [2023-09-01 04:43:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 925 transitions. [2023-09-01 04:43:28,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476613380698638 [2023-09-01 04:43:28,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 925 transitions. [2023-09-01 04:43:28,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 925 transitions. [2023-09-01 04:43:28,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:28,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 925 transitions. [2023-09-01 04:43:28,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 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 04:43:28,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:43:28,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:43:28,618 INFO L175 Difference]: Start difference. First operand has 201 places, 152 transitions, 1337 flow. Second operand 3 states and 925 transitions. [2023-09-01 04:43:28,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 179 transitions, 1757 flow [2023-09-01 04:43:28,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 179 transitions, 1670 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-09-01 04:43:28,780 INFO L231 Difference]: Finished difference. Result has 193 places, 151 transitions, 1258 flow [2023-09-01 04:43:28,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1258, PETRI_PLACES=193, PETRI_TRANSITIONS=151} [2023-09-01 04:43:28,780 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 116 predicate places. [2023-09-01 04:43:28,780 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 151 transitions, 1258 flow [2023-09-01 04:43:28,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 04:43:28,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:28,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:28,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 04:43:28,781 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:28,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash -469876458, now seen corresponding path program 1 times [2023-09-01 04:43:28,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009851453] [2023-09-01 04:43:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:29,562 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 04:43:29,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:29,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009851453] [2023-09-01 04:43:29,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009851453] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:29,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:29,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 04:43:29,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965250226] [2023-09-01 04:43:29,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:29,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:43:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:43:29,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:43:30,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 563 [2023-09-01 04:43:30,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 151 transitions, 1258 flow. Second operand has 14 states, 14 states have (on average 248.57142857142858) internal successors, (3480), 14 states have internal predecessors, (3480), 0 states have call successors, (0), 0 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 04:43:30,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:30,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 563 [2023-09-01 04:43:30,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:32,037 INFO L130 PetriNetUnfolder]: 7395/12944 cut-off events. [2023-09-01 04:43:32,037 INFO L131 PetriNetUnfolder]: For 20680/20680 co-relation queries the response was YES. [2023-09-01 04:43:32,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42571 conditions, 12944 events. 7395/12944 cut-off events. For 20680/20680 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 82584 event pairs, 5537 based on Foata normal form. 0/11830 useless extension candidates. Maximal degree in co-relation 39190. Up to 10900 conditions per place. [2023-09-01 04:43:32,171 INFO L137 encePairwiseOnDemand]: 548/563 looper letters, 193 selfloop transitions, 34 changer transitions 3/237 dead transitions. [2023-09-01 04:43:32,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 237 transitions, 2150 flow [2023-09-01 04:43:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:43:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:43:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3609 transitions. [2023-09-01 04:43:32,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578787109870591 [2023-09-01 04:43:32,174 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3609 transitions. [2023-09-01 04:43:32,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3609 transitions. [2023-09-01 04:43:32,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:32,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3609 transitions. [2023-09-01 04:43:32,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 257.7857142857143) internal successors, (3609), 14 states have internal predecessors, (3609), 0 states have call successors, (0), 0 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 04:43:32,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 563.0) internal successors, (8445), 15 states have internal predecessors, (8445), 0 states have call successors, (0), 0 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 04:43:32,184 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 563.0) internal successors, (8445), 15 states have internal predecessors, (8445), 0 states have call successors, (0), 0 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 04:43:32,184 INFO L175 Difference]: Start difference. First operand has 193 places, 151 transitions, 1258 flow. Second operand 14 states and 3609 transitions. [2023-09-01 04:43:32,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 237 transitions, 2150 flow [2023-09-01 04:43:32,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 237 transitions, 2142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:43:32,428 INFO L231 Difference]: Finished difference. Result has 212 places, 159 transitions, 1452 flow [2023-09-01 04:43:32,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1452, PETRI_PLACES=212, PETRI_TRANSITIONS=159} [2023-09-01 04:43:32,429 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 135 predicate places. [2023-09-01 04:43:32,429 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 159 transitions, 1452 flow [2023-09-01 04:43:32,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.57142857142858) internal successors, (3480), 14 states have internal predecessors, (3480), 0 states have call successors, (0), 0 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 04:43:32,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:32,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:32,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 04:43:32,430 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:32,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash 529053355, now seen corresponding path program 1 times [2023-09-01 04:43:32,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:32,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226984742] [2023-09-01 04:43:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:32,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:32,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:32,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226984742] [2023-09-01 04:43:32,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226984742] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:32,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803655307] [2023-09-01 04:43:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:32,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:32,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:32,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:43:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:32,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:43:32,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:32,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:43:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803655307] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:32,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:43:32,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:43:32,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821505640] [2023-09-01 04:43:32,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:32,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:43:32,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:32,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:43:32,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:43:32,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 563 [2023-09-01 04:43:32,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 159 transitions, 1452 flow. Second operand has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 04:43:32,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:32,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 563 [2023-09-01 04:43:32,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:33,891 INFO L130 PetriNetUnfolder]: 6564/11843 cut-off events. [2023-09-01 04:43:33,891 INFO L131 PetriNetUnfolder]: For 22516/22565 co-relation queries the response was YES. [2023-09-01 04:43:33,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39960 conditions, 11843 events. 6564/11843 cut-off events. For 22516/22565 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 78266 event pairs, 1232 based on Foata normal form. 331/11387 useless extension candidates. Maximal degree in co-relation 38701. Up to 6542 conditions per place. [2023-09-01 04:43:34,000 INFO L137 encePairwiseOnDemand]: 559/563 looper letters, 223 selfloop transitions, 2 changer transitions 0/239 dead transitions. [2023-09-01 04:43:34,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 239 transitions, 2715 flow [2023-09-01 04:43:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:43:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:43:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1227 transitions. [2023-09-01 04:43:34,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448490230905861 [2023-09-01 04:43:34,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1227 transitions. [2023-09-01 04:43:34,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1227 transitions. [2023-09-01 04:43:34,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:34,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1227 transitions. [2023-09-01 04:43:34,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.75) internal successors, (1227), 4 states have internal predecessors, (1227), 0 states have call successors, (0), 0 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 04:43:34,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 563.0) internal successors, (2815), 5 states have internal predecessors, (2815), 0 states have call successors, (0), 0 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 04:43:34,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 563.0) internal successors, (2815), 5 states have internal predecessors, (2815), 0 states have call successors, (0), 0 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 04:43:34,010 INFO L175 Difference]: Start difference. First operand has 212 places, 159 transitions, 1452 flow. Second operand 4 states and 1227 transitions. [2023-09-01 04:43:34,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 239 transitions, 2715 flow [2023-09-01 04:43:34,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 239 transitions, 2661 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-09-01 04:43:34,247 INFO L231 Difference]: Finished difference. Result has 207 places, 157 transitions, 1404 flow [2023-09-01 04:43:34,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1404, PETRI_PLACES=207, PETRI_TRANSITIONS=157} [2023-09-01 04:43:34,248 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 130 predicate places. [2023-09-01 04:43:34,248 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 157 transitions, 1404 flow [2023-09-01 04:43:34,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 04:43:34,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:34,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:34,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:34,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 04:43:34,454 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:34,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash -469876456, now seen corresponding path program 1 times [2023-09-01 04:43:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:34,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43039541] [2023-09-01 04:43:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:34,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:34,923 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 04:43:34,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:34,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43039541] [2023-09-01 04:43:34,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43039541] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:34,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:34,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 04:43:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983446413] [2023-09-01 04:43:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:34,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:43:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:43:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:43:35,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 563 [2023-09-01 04:43:35,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 157 transitions, 1404 flow. Second operand has 12 states, 12 states have (on average 242.83333333333334) internal successors, (2914), 12 states have internal predecessors, (2914), 0 states have call successors, (0), 0 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 04:43:35,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:35,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 563 [2023-09-01 04:43:35,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:37,836 INFO L130 PetriNetUnfolder]: 8504/14828 cut-off events. [2023-09-01 04:43:37,837 INFO L131 PetriNetUnfolder]: For 23817/23817 co-relation queries the response was YES. [2023-09-01 04:43:37,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48355 conditions, 14828 events. 8504/14828 cut-off events. For 23817/23817 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 96965 event pairs, 3740 based on Foata normal form. 0/13810 useless extension candidates. Maximal degree in co-relation 47121. Up to 6378 conditions per place. [2023-09-01 04:43:38,011 INFO L137 encePairwiseOnDemand]: 547/563 looper letters, 231 selfloop transitions, 66 changer transitions 6/310 dead transitions. [2023-09-01 04:43:38,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 310 transitions, 2617 flow [2023-09-01 04:43:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 04:43:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 04:43:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4310 transitions. [2023-09-01 04:43:38,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450318670985268 [2023-09-01 04:43:38,019 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4310 transitions. [2023-09-01 04:43:38,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4310 transitions. [2023-09-01 04:43:38,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:38,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4310 transitions. [2023-09-01 04:43:38,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 253.52941176470588) internal successors, (4310), 17 states have internal predecessors, (4310), 0 states have call successors, (0), 0 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 04:43:38,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 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 04:43:38,042 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 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 04:43:38,042 INFO L175 Difference]: Start difference. First operand has 207 places, 157 transitions, 1404 flow. Second operand 17 states and 4310 transitions. [2023-09-01 04:43:38,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 310 transitions, 2617 flow [2023-09-01 04:43:38,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 310 transitions, 2609 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:43:38,291 INFO L231 Difference]: Finished difference. Result has 225 places, 166 transitions, 1604 flow [2023-09-01 04:43:38,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1604, PETRI_PLACES=225, PETRI_TRANSITIONS=166} [2023-09-01 04:43:38,292 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 148 predicate places. [2023-09-01 04:43:38,292 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 166 transitions, 1604 flow [2023-09-01 04:43:38,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 242.83333333333334) internal successors, (2914), 12 states have internal predecessors, (2914), 0 states have call successors, (0), 0 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 04:43:38,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:38,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:38,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 04:43:38,293 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:38,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash -136683004, now seen corresponding path program 1 times [2023-09-01 04:43:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:38,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049368688] [2023-09-01 04:43:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:39,236 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 04:43:39,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:39,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049368688] [2023-09-01 04:43:39,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049368688] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:39,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:43:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005153156] [2023-09-01 04:43:39,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:39,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 04:43:39,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 04:43:39,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-09-01 04:43:40,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 563 [2023-09-01 04:43:40,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 166 transitions, 1604 flow. Second operand has 15 states, 15 states have (on average 241.53333333333333) internal successors, (3623), 15 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:43:40,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:40,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 563 [2023-09-01 04:43:40,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:42,702 INFO L130 PetriNetUnfolder]: 7068/12357 cut-off events. [2023-09-01 04:43:42,702 INFO L131 PetriNetUnfolder]: For 25053/25053 co-relation queries the response was YES. [2023-09-01 04:43:42,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43727 conditions, 12357 events. 7068/12357 cut-off events. For 25053/25053 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 77715 event pairs, 3540 based on Foata normal form. 68/11755 useless extension candidates. Maximal degree in co-relation 41723. Up to 6791 conditions per place. [2023-09-01 04:43:42,962 INFO L137 encePairwiseOnDemand]: 548/563 looper letters, 241 selfloop transitions, 62 changer transitions 3/313 dead transitions. [2023-09-01 04:43:42,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 313 transitions, 2830 flow [2023-09-01 04:43:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 04:43:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 04:43:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4529 transitions. [2023-09-01 04:43:42,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469113874087231 [2023-09-01 04:43:42,966 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4529 transitions. [2023-09-01 04:43:42,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4529 transitions. [2023-09-01 04:43:42,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:42,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4529 transitions. [2023-09-01 04:43:42,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 251.61111111111111) internal successors, (4529), 18 states have internal predecessors, (4529), 0 states have call successors, (0), 0 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 04:43:42,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 563.0) internal successors, (10697), 19 states have internal predecessors, (10697), 0 states have call successors, (0), 0 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 04:43:42,980 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 563.0) internal successors, (10697), 19 states have internal predecessors, (10697), 0 states have call successors, (0), 0 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 04:43:42,980 INFO L175 Difference]: Start difference. First operand has 225 places, 166 transitions, 1604 flow. Second operand 18 states and 4529 transitions. [2023-09-01 04:43:42,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 313 transitions, 2830 flow [2023-09-01 04:43:43,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 313 transitions, 2726 flow, removed 8 selfloop flow, removed 14 redundant places. [2023-09-01 04:43:43,233 INFO L231 Difference]: Finished difference. Result has 227 places, 158 transitions, 1585 flow [2023-09-01 04:43:43,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=227, PETRI_TRANSITIONS=158} [2023-09-01 04:43:43,233 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 150 predicate places. [2023-09-01 04:43:43,234 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 158 transitions, 1585 flow [2023-09-01 04:43:43,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 241.53333333333333) internal successors, (3623), 15 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:43:43,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:43,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:43,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 04:43:43,235 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:43,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash -800530184, now seen corresponding path program 2 times [2023-09-01 04:43:43,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:43,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052881388] [2023-09-01 04:43:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:43,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:44,066 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 04:43:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052881388] [2023-09-01 04:43:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052881388] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:44,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:44,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:43:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702511930] [2023-09-01 04:43:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:44,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 04:43:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 04:43:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-09-01 04:43:45,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 563 [2023-09-01 04:43:45,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 158 transitions, 1585 flow. Second operand has 15 states, 15 states have (on average 241.53333333333333) internal successors, (3623), 15 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:43:45,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:45,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 563 [2023-09-01 04:43:45,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:47,619 INFO L130 PetriNetUnfolder]: 8688/15136 cut-off events. [2023-09-01 04:43:47,619 INFO L131 PetriNetUnfolder]: For 27447/27447 co-relation queries the response was YES. [2023-09-01 04:43:47,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51291 conditions, 15136 events. 8688/15136 cut-off events. For 27447/27447 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 98862 event pairs, 1695 based on Foata normal form. 150/14400 useless extension candidates. Maximal degree in co-relation 45161. Up to 5793 conditions per place. [2023-09-01 04:43:47,731 INFO L137 encePairwiseOnDemand]: 543/563 looper letters, 260 selfloop transitions, 80 changer transitions 0/347 dead transitions. [2023-09-01 04:43:47,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 347 transitions, 3032 flow [2023-09-01 04:43:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 04:43:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 04:43:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4321 transitions. [2023-09-01 04:43:47,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514679761780378 [2023-09-01 04:43:47,735 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4321 transitions. [2023-09-01 04:43:47,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4321 transitions. [2023-09-01 04:43:47,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:47,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4321 transitions. [2023-09-01 04:43:47,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 254.1764705882353) internal successors, (4321), 17 states have internal predecessors, (4321), 0 states have call successors, (0), 0 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 04:43:47,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 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 04:43:47,747 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 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 04:43:47,747 INFO L175 Difference]: Start difference. First operand has 227 places, 158 transitions, 1585 flow. Second operand 17 states and 4321 transitions. [2023-09-01 04:43:47,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 347 transitions, 3032 flow [2023-09-01 04:43:47,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 347 transitions, 2900 flow, removed 1 selfloop flow, removed 18 redundant places. [2023-09-01 04:43:47,988 INFO L231 Difference]: Finished difference. Result has 229 places, 169 transitions, 1751 flow [2023-09-01 04:43:47,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1751, PETRI_PLACES=229, PETRI_TRANSITIONS=169} [2023-09-01 04:43:47,989 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 152 predicate places. [2023-09-01 04:43:47,989 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 169 transitions, 1751 flow [2023-09-01 04:43:47,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 241.53333333333333) internal successors, (3623), 15 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:43:47,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:47,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:47,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 04:43:47,990 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:47,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash -222927654, now seen corresponding path program 1 times [2023-09-01 04:43:47,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:47,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446959405] [2023-09-01 04:43:47,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:48,519 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 04:43:48,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:48,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446959405] [2023-09-01 04:43:48,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446959405] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:48,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:48,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 04:43:48,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690316532] [2023-09-01 04:43:48,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:48,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 04:43:48,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 04:43:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-09-01 04:43:49,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 563 [2023-09-01 04:43:49,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 169 transitions, 1751 flow. Second operand has 13 states, 13 states have (on average 239.76923076923077) internal successors, (3117), 13 states have internal predecessors, (3117), 0 states have call successors, (0), 0 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 04:43:49,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:49,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 563 [2023-09-01 04:43:49,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:52,043 INFO L130 PetriNetUnfolder]: 9831/17237 cut-off events. [2023-09-01 04:43:52,043 INFO L131 PetriNetUnfolder]: For 37082/37082 co-relation queries the response was YES. [2023-09-01 04:43:52,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59781 conditions, 17237 events. 9831/17237 cut-off events. For 37082/37082 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 116453 event pairs, 1683 based on Foata normal form. 184/16321 useless extension candidates. Maximal degree in co-relation 57748. Up to 5049 conditions per place. [2023-09-01 04:43:52,230 INFO L137 encePairwiseOnDemand]: 548/563 looper letters, 242 selfloop transitions, 71 changer transitions 3/323 dead transitions. [2023-09-01 04:43:52,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 323 transitions, 3021 flow [2023-09-01 04:43:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:43:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:43:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3532 transitions. [2023-09-01 04:43:52,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481096168485156 [2023-09-01 04:43:52,233 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3532 transitions. [2023-09-01 04:43:52,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3532 transitions. [2023-09-01 04:43:52,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:52,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3532 transitions. [2023-09-01 04:43:52,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 252.28571428571428) internal successors, (3532), 14 states have internal predecessors, (3532), 0 states have call successors, (0), 0 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 04:43:52,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 563.0) internal successors, (8445), 15 states have internal predecessors, (8445), 0 states have call successors, (0), 0 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 04:43:52,241 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 563.0) internal successors, (8445), 15 states have internal predecessors, (8445), 0 states have call successors, (0), 0 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 04:43:52,241 INFO L175 Difference]: Start difference. First operand has 229 places, 169 transitions, 1751 flow. Second operand 14 states and 3532 transitions. [2023-09-01 04:43:52,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 323 transitions, 3021 flow [2023-09-01 04:43:52,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 323 transitions, 2925 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-09-01 04:43:52,573 INFO L231 Difference]: Finished difference. Result has 234 places, 179 transitions, 1909 flow [2023-09-01 04:43:52,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1909, PETRI_PLACES=234, PETRI_TRANSITIONS=179} [2023-09-01 04:43:52,574 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 157 predicate places. [2023-09-01 04:43:52,574 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 179 transitions, 1909 flow [2023-09-01 04:43:52,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 239.76923076923077) internal successors, (3117), 13 states have internal predecessors, (3117), 0 states have call successors, (0), 0 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 04:43:52,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:52,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:52,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 04:43:52,575 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:52,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1652168070, now seen corresponding path program 3 times [2023-09-01 04:43:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588290024] [2023-09-01 04:43:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:53,396 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 04:43:53,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588290024] [2023-09-01 04:43:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588290024] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:43:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609153492] [2023-09-01 04:43:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 04:43:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 04:43:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-09-01 04:43:54,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 563 [2023-09-01 04:43:54,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 179 transitions, 1909 flow. Second operand has 15 states, 15 states have (on average 245.53333333333333) internal successors, (3683), 15 states have internal predecessors, (3683), 0 states have call successors, (0), 0 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 04:43:54,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:54,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 563 [2023-09-01 04:43:54,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:56,214 INFO L130 PetriNetUnfolder]: 7252/12775 cut-off events. [2023-09-01 04:43:56,214 INFO L131 PetriNetUnfolder]: For 36498/36498 co-relation queries the response was YES. [2023-09-01 04:43:56,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48214 conditions, 12775 events. 7252/12775 cut-off events. For 36498/36498 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 81141 event pairs, 1707 based on Foata normal form. 136/12247 useless extension candidates. Maximal degree in co-relation 46992. Up to 4832 conditions per place. [2023-09-01 04:43:56,334 INFO L137 encePairwiseOnDemand]: 549/563 looper letters, 191 selfloop transitions, 58 changer transitions 3/259 dead transitions. [2023-09-01 04:43:56,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 259 transitions, 2677 flow [2023-09-01 04:43:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 04:43:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 04:43:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3082 transitions. [2023-09-01 04:43:56,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561870929544109 [2023-09-01 04:43:56,337 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3082 transitions. [2023-09-01 04:43:56,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3082 transitions. [2023-09-01 04:43:56,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:56,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3082 transitions. [2023-09-01 04:43:56,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 256.8333333333333) internal successors, (3082), 12 states have internal predecessors, (3082), 0 states have call successors, (0), 0 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 04:43:56,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 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 04:43:56,346 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 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 04:43:56,346 INFO L175 Difference]: Start difference. First operand has 234 places, 179 transitions, 1909 flow. Second operand 12 states and 3082 transitions. [2023-09-01 04:43:56,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 259 transitions, 2677 flow [2023-09-01 04:43:56,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 259 transitions, 2473 flow, removed 12 selfloop flow, removed 18 redundant places. [2023-09-01 04:43:56,684 INFO L231 Difference]: Finished difference. Result has 226 places, 161 transitions, 1682 flow [2023-09-01 04:43:56,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1682, PETRI_PLACES=226, PETRI_TRANSITIONS=161} [2023-09-01 04:43:56,685 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 149 predicate places. [2023-09-01 04:43:56,685 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 161 transitions, 1682 flow [2023-09-01 04:43:56,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 245.53333333333333) internal successors, (3683), 15 states have internal predecessors, (3683), 0 states have call successors, (0), 0 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 04:43:56,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:56,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:56,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 04:43:56,686 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:56,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1016470593, now seen corresponding path program 1 times [2023-09-01 04:43:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:56,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879249243] [2023-09-01 04:43:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:56,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:56,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879249243] [2023-09-01 04:43:56,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879249243] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:56,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:56,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:43:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988592915] [2023-09-01 04:43:56,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:56,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:56,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 563 [2023-09-01 04:43:56,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 161 transitions, 1682 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 04:43:56,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:56,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 563 [2023-09-01 04:43:56,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:57,649 INFO L130 PetriNetUnfolder]: 5057/9210 cut-off events. [2023-09-01 04:43:57,649 INFO L131 PetriNetUnfolder]: For 32867/32897 co-relation queries the response was YES. [2023-09-01 04:43:57,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36719 conditions, 9210 events. 5057/9210 cut-off events. For 32867/32897 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 59866 event pairs, 3775 based on Foata normal form. 112/9150 useless extension candidates. Maximal degree in co-relation 32624. Up to 7247 conditions per place. [2023-09-01 04:43:57,711 INFO L137 encePairwiseOnDemand]: 560/563 looper letters, 160 selfloop transitions, 2 changer transitions 3/176 dead transitions. [2023-09-01 04:43:57,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 176 transitions, 2079 flow [2023-09-01 04:43:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-09-01 04:43:57,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5429248075784487 [2023-09-01 04:43:57,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-09-01 04:43:57,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-09-01 04:43:57,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:57,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-09-01 04:43:57,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 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 04:43:57,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:43:57,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:43:57,715 INFO L175 Difference]: Start difference. First operand has 226 places, 161 transitions, 1682 flow. Second operand 3 states and 917 transitions. [2023-09-01 04:43:57,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 176 transitions, 2079 flow [2023-09-01 04:43:57,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 176 transitions, 1943 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-09-01 04:43:57,997 INFO L231 Difference]: Finished difference. Result has 216 places, 160 transitions, 1550 flow [2023-09-01 04:43:57,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1550, PETRI_PLACES=216, PETRI_TRANSITIONS=160} [2023-09-01 04:43:57,997 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 139 predicate places. [2023-09-01 04:43:57,998 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 160 transitions, 1550 flow [2023-09-01 04:43:57,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 04:43:57,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:57,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:57,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 04:43:57,998 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:57,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:57,999 INFO L85 PathProgramCache]: Analyzing trace with hash -193922603, now seen corresponding path program 1 times [2023-09-01 04:43:57,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:57,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105595367] [2023-09-01 04:43:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:58,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:58,054 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 04:43:58,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:58,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105595367] [2023-09-01 04:43:58,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105595367] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:58,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:58,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:43:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140707627] [2023-09-01 04:43:58,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:58,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:43:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:58,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:43:58,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:43:58,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 563 [2023-09-01 04:43:58,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 160 transitions, 1550 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 04:43:58,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:58,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 563 [2023-09-01 04:43:58,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:58,656 INFO L130 PetriNetUnfolder]: 3187/6094 cut-off events. [2023-09-01 04:43:58,656 INFO L131 PetriNetUnfolder]: For 18034/18040 co-relation queries the response was YES. [2023-09-01 04:43:58,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23964 conditions, 6094 events. 3187/6094 cut-off events. For 18034/18040 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 37630 event pairs, 841 based on Foata normal form. 616/6572 useless extension candidates. Maximal degree in co-relation 22767. Up to 4446 conditions per place. [2023-09-01 04:43:58,697 INFO L137 encePairwiseOnDemand]: 557/563 looper letters, 152 selfloop transitions, 9 changer transitions 1/173 dead transitions. [2023-09-01 04:43:58,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 173 transitions, 1947 flow [2023-09-01 04:43:58,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:43:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:43:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2023-09-01 04:43:58,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53700414446418 [2023-09-01 04:43:58,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2023-09-01 04:43:58,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2023-09-01 04:43:58,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:58,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2023-09-01 04:43:58,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 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 04:43:58,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:43:58,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 04:43:58,701 INFO L175 Difference]: Start difference. First operand has 216 places, 160 transitions, 1550 flow. Second operand 3 states and 907 transitions. [2023-09-01 04:43:58,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 173 transitions, 1947 flow [2023-09-01 04:43:58,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 173 transitions, 1943 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:43:58,832 INFO L231 Difference]: Finished difference. Result has 216 places, 159 transitions, 1562 flow [2023-09-01 04:43:58,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1562, PETRI_PLACES=216, PETRI_TRANSITIONS=159} [2023-09-01 04:43:58,833 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 139 predicate places. [2023-09-01 04:43:58,833 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 159 transitions, 1562 flow [2023-09-01 04:43:58,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 04:43:58,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:58,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:58,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 04:43:58,834 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:43:58,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:58,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1398243672, now seen corresponding path program 1 times [2023-09-01 04:43:58,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:58,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89244673] [2023-09-01 04:43:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:59,518 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 04:43:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89244673] [2023-09-01 04:43:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89244673] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:59,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:59,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-09-01 04:43:59,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796054562] [2023-09-01 04:43:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:59,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:43:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:43:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:44:01,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 563 [2023-09-01 04:44:01,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 159 transitions, 1562 flow. Second operand has 16 states, 16 states have (on average 246.0) internal successors, (3936), 16 states have internal predecessors, (3936), 0 states have call successors, (0), 0 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 04:44:01,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:01,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 563 [2023-09-01 04:44:01,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:03,153 INFO L130 PetriNetUnfolder]: 4755/9144 cut-off events. [2023-09-01 04:44:03,153 INFO L131 PetriNetUnfolder]: For 22883/22889 co-relation queries the response was YES. [2023-09-01 04:44:03,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33826 conditions, 9144 events. 4755/9144 cut-off events. For 22883/22889 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 61664 event pairs, 2161 based on Foata normal form. 0/8881 useless extension candidates. Maximal degree in co-relation 30610. Up to 2657 conditions per place. [2023-09-01 04:44:03,223 INFO L137 encePairwiseOnDemand]: 544/563 looper letters, 284 selfloop transitions, 68 changer transitions 10/368 dead transitions. [2023-09-01 04:44:03,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 368 transitions, 3267 flow [2023-09-01 04:44:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-09-01 04:44:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-09-01 04:44:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 7103 transitions. [2023-09-01 04:44:03,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058360822126364 [2023-09-01 04:44:03,229 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 7103 transitions. [2023-09-01 04:44:03,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 7103 transitions. [2023-09-01 04:44:03,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:03,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 7103 transitions. [2023-09-01 04:44:03,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 253.67857142857142) internal successors, (7103), 28 states have internal predecessors, (7103), 0 states have call successors, (0), 0 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 04:44:03,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 563.0) internal successors, (16327), 29 states have internal predecessors, (16327), 0 states have call successors, (0), 0 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 04:44:03,248 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 563.0) internal successors, (16327), 29 states have internal predecessors, (16327), 0 states have call successors, (0), 0 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 04:44:03,248 INFO L175 Difference]: Start difference. First operand has 216 places, 159 transitions, 1562 flow. Second operand 28 states and 7103 transitions. [2023-09-01 04:44:03,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 368 transitions, 3267 flow [2023-09-01 04:44:03,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 368 transitions, 3237 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:44:03,412 INFO L231 Difference]: Finished difference. Result has 249 places, 174 transitions, 1881 flow [2023-09-01 04:44:03,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1881, PETRI_PLACES=249, PETRI_TRANSITIONS=174} [2023-09-01 04:44:03,412 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 172 predicate places. [2023-09-01 04:44:03,412 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 174 transitions, 1881 flow [2023-09-01 04:44:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 246.0) internal successors, (3936), 16 states have internal predecessors, (3936), 0 states have call successors, (0), 0 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 04:44:03,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:03,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:03,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 04:44:03,413 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:44:03,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1778907738, now seen corresponding path program 1 times [2023-09-01 04:44:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:03,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507484071] [2023-09-01 04:44:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:03,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:03,831 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 04:44:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:03,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507484071] [2023-09-01 04:44:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507484071] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:03,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 04:44:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028321949] [2023-09-01 04:44:03,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:03,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:44:03,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:03,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:44:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:44:04,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 563 [2023-09-01 04:44:04,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 174 transitions, 1881 flow. Second operand has 12 states, 12 states have (on average 254.66666666666666) internal successors, (3056), 12 states have internal predecessors, (3056), 0 states have call successors, (0), 0 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 04:44:04,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:04,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 563 [2023-09-01 04:44:04,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:06,043 INFO L130 PetriNetUnfolder]: 5182/10024 cut-off events. [2023-09-01 04:44:06,043 INFO L131 PetriNetUnfolder]: For 26769/26769 co-relation queries the response was YES. [2023-09-01 04:44:06,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37190 conditions, 10024 events. 5182/10024 cut-off events. For 26769/26769 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 68731 event pairs, 1621 based on Foata normal form. 0/9807 useless extension candidates. Maximal degree in co-relation 35719. Up to 3622 conditions per place. [2023-09-01 04:44:06,107 INFO L137 encePairwiseOnDemand]: 550/563 looper letters, 185 selfloop transitions, 61 changer transitions 0/252 dead transitions. [2023-09-01 04:44:06,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 252 transitions, 2720 flow [2023-09-01 04:44:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 04:44:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 04:44:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2660 transitions. [2023-09-01 04:44:06,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724689165186501 [2023-09-01 04:44:06,109 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2660 transitions. [2023-09-01 04:44:06,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2660 transitions. [2023-09-01 04:44:06,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:06,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2660 transitions. [2023-09-01 04:44:06,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 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 04:44:06,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 563.0) internal successors, (6193), 11 states have internal predecessors, (6193), 0 states have call successors, (0), 0 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 04:44:06,113 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 563.0) internal successors, (6193), 11 states have internal predecessors, (6193), 0 states have call successors, (0), 0 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 04:44:06,113 INFO L175 Difference]: Start difference. First operand has 249 places, 174 transitions, 1881 flow. Second operand 10 states and 2660 transitions. [2023-09-01 04:44:06,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 252 transitions, 2720 flow [2023-09-01 04:44:06,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 252 transitions, 2626 flow, removed 8 selfloop flow, removed 16 redundant places. [2023-09-01 04:44:06,283 INFO L231 Difference]: Finished difference. Result has 245 places, 178 transitions, 2002 flow [2023-09-01 04:44:06,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=245, PETRI_TRANSITIONS=178} [2023-09-01 04:44:06,283 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 168 predicate places. [2023-09-01 04:44:06,284 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 178 transitions, 2002 flow [2023-09-01 04:44:06,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 254.66666666666666) internal successors, (3056), 12 states have internal predecessors, (3056), 0 states have call successors, (0), 0 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 04:44:06,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:06,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:06,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 04:44:06,285 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:44:06,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:06,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1104735468, now seen corresponding path program 2 times [2023-09-01 04:44:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:06,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958463456] [2023-09-01 04:44:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:07,087 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 04:44:07,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:07,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958463456] [2023-09-01 04:44:07,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958463456] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:07,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:07,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 04:44:07,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726996502] [2023-09-01 04:44:07,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:07,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 04:44:07,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:07,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 04:44:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-09-01 04:44:09,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 563 [2023-09-01 04:44:09,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 178 transitions, 2002 flow. Second operand has 17 states, 17 states have (on average 242.88235294117646) internal successors, (4129), 17 states have internal predecessors, (4129), 0 states have call successors, (0), 0 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 04:44:09,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:09,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 563 [2023-09-01 04:44:09,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:11,919 INFO L130 PetriNetUnfolder]: 5391/10411 cut-off events. [2023-09-01 04:44:11,919 INFO L131 PetriNetUnfolder]: For 28863/28879 co-relation queries the response was YES. [2023-09-01 04:44:11,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38991 conditions, 10411 events. 5391/10411 cut-off events. For 28863/28879 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 69218 event pairs, 1176 based on Foata normal form. 60/10243 useless extension candidates. Maximal degree in co-relation 38602. Up to 4433 conditions per place. [2023-09-01 04:44:12,008 INFO L137 encePairwiseOnDemand]: 546/563 looper letters, 195 selfloop transitions, 87 changer transitions 7/295 dead transitions. [2023-09-01 04:44:12,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 295 transitions, 3098 flow [2023-09-01 04:44:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 04:44:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 04:44:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4273 transitions. [2023-09-01 04:44:12,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4464528262459513 [2023-09-01 04:44:12,011 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4273 transitions. [2023-09-01 04:44:12,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4273 transitions. [2023-09-01 04:44:12,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:12,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4273 transitions. [2023-09-01 04:44:12,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.35294117647058) internal successors, (4273), 17 states have internal predecessors, (4273), 0 states have call successors, (0), 0 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 04:44:12,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 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 04:44:12,020 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 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 04:44:12,020 INFO L175 Difference]: Start difference. First operand has 245 places, 178 transitions, 2002 flow. Second operand 17 states and 4273 transitions. [2023-09-01 04:44:12,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 295 transitions, 3098 flow [2023-09-01 04:44:12,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 295 transitions, 3026 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-09-01 04:44:12,237 INFO L231 Difference]: Finished difference. Result has 260 places, 182 transitions, 2196 flow [2023-09-01 04:44:12,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2196, PETRI_PLACES=260, PETRI_TRANSITIONS=182} [2023-09-01 04:44:12,238 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 183 predicate places. [2023-09-01 04:44:12,238 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 182 transitions, 2196 flow [2023-09-01 04:44:12,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 242.88235294117646) internal successors, (4129), 17 states have internal predecessors, (4129), 0 states have call successors, (0), 0 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 04:44:12,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:12,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:12,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 04:44:12,239 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:44:12,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash -61125312, now seen corresponding path program 2 times [2023-09-01 04:44:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:12,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475766236] [2023-09-01 04:44:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:12,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:12,630 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 04:44:12,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:12,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475766236] [2023-09-01 04:44:12,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475766236] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:12,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:12,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 04:44:12,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020036893] [2023-09-01 04:44:12,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:12,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 04:44:12,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 04:44:12,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-09-01 04:44:13,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 563 [2023-09-01 04:44:13,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 182 transitions, 2196 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 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 04:44:13,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:13,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 563 [2023-09-01 04:44:13,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:15,278 INFO L130 PetriNetUnfolder]: 5381/10429 cut-off events. [2023-09-01 04:44:15,278 INFO L131 PetriNetUnfolder]: For 29716/29716 co-relation queries the response was YES. [2023-09-01 04:44:15,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40153 conditions, 10429 events. 5381/10429 cut-off events. For 29716/29716 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 69774 event pairs, 2017 based on Foata normal form. 20/10229 useless extension candidates. Maximal degree in co-relation 39730. Up to 5452 conditions per place. [2023-09-01 04:44:15,352 INFO L137 encePairwiseOnDemand]: 551/563 looper letters, 154 selfloop transitions, 59 changer transitions 1/220 dead transitions. [2023-09-01 04:44:15,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 220 transitions, 2796 flow [2023-09-01 04:44:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 04:44:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 04:44:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2088 transitions. [2023-09-01 04:44:15,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635879218472469 [2023-09-01 04:44:15,354 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2088 transitions. [2023-09-01 04:44:15,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2088 transitions. [2023-09-01 04:44:15,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:15,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2088 transitions. [2023-09-01 04:44:15,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 261.0) internal successors, (2088), 8 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 04:44:15,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 563.0) internal successors, (5067), 9 states have internal predecessors, (5067), 0 states have call successors, (0), 0 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 04:44:15,358 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 563.0) internal successors, (5067), 9 states have internal predecessors, (5067), 0 states have call successors, (0), 0 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 04:44:15,358 INFO L175 Difference]: Start difference. First operand has 260 places, 182 transitions, 2196 flow. Second operand 8 states and 2088 transitions. [2023-09-01 04:44:15,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 220 transitions, 2796 flow [2023-09-01 04:44:15,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 220 transitions, 2644 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-09-01 04:44:15,585 INFO L231 Difference]: Finished difference. Result has 254 places, 181 transitions, 2158 flow [2023-09-01 04:44:15,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2158, PETRI_PLACES=254, PETRI_TRANSITIONS=181} [2023-09-01 04:44:15,586 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 177 predicate places. [2023-09-01 04:44:15,586 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 181 transitions, 2158 flow [2023-09-01 04:44:15,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 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 04:44:15,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:15,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:15,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-09-01 04:44:15,587 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:44:15,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1517829843, now seen corresponding path program 1 times [2023-09-01 04:44:15,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:15,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095372508] [2023-09-01 04:44:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:16,835 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 04:44:16,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:16,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095372508] [2023-09-01 04:44:16,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095372508] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:16,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:16,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-09-01 04:44:16,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385931427] [2023-09-01 04:44:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:16,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:44:16,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:16,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:44:16,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:44:18,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 563 [2023-09-01 04:44:18,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 181 transitions, 2158 flow. Second operand has 18 states, 18 states have (on average 242.94444444444446) internal successors, (4373), 18 states have internal predecessors, (4373), 0 states have call successors, (0), 0 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 04:44:18,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:18,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 563 [2023-09-01 04:44:18,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:20,261 INFO L130 PetriNetUnfolder]: 5818/11237 cut-off events. [2023-09-01 04:44:20,262 INFO L131 PetriNetUnfolder]: For 35610/35620 co-relation queries the response was YES. [2023-09-01 04:44:20,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42711 conditions, 11237 events. 5818/11237 cut-off events. For 35610/35620 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 76222 event pairs, 2762 based on Foata normal form. 0/11015 useless extension candidates. Maximal degree in co-relation 42298. Up to 5276 conditions per place. [2023-09-01 04:44:20,394 INFO L137 encePairwiseOnDemand]: 545/563 looper letters, 202 selfloop transitions, 59 changer transitions 15/282 dead transitions. [2023-09-01 04:44:20,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 282 transitions, 3181 flow [2023-09-01 04:44:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 04:44:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 04:44:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3293 transitions. [2023-09-01 04:44:20,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499248531220112 [2023-09-01 04:44:20,397 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3293 transitions. [2023-09-01 04:44:20,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3293 transitions. [2023-09-01 04:44:20,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:20,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3293 transitions. [2023-09-01 04:44:20,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 253.30769230769232) internal successors, (3293), 13 states have internal predecessors, (3293), 0 states have call successors, (0), 0 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 04:44:20,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 563.0) internal successors, (7882), 14 states have internal predecessors, (7882), 0 states have call successors, (0), 0 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 04:44:20,403 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 563.0) internal successors, (7882), 14 states have internal predecessors, (7882), 0 states have call successors, (0), 0 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 04:44:20,403 INFO L175 Difference]: Start difference. First operand has 254 places, 181 transitions, 2158 flow. Second operand 13 states and 3293 transitions. [2023-09-01 04:44:20,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 282 transitions, 3181 flow [2023-09-01 04:44:20,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 282 transitions, 3039 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-09-01 04:44:20,663 INFO L231 Difference]: Finished difference. Result has 261 places, 184 transitions, 2192 flow [2023-09-01 04:44:20,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2192, PETRI_PLACES=261, PETRI_TRANSITIONS=184} [2023-09-01 04:44:20,663 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 184 predicate places. [2023-09-01 04:44:20,663 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 184 transitions, 2192 flow [2023-09-01 04:44:20,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 242.94444444444446) internal successors, (4373), 18 states have internal predecessors, (4373), 0 states have call successors, (0), 0 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 04:44:20,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:20,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:20,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-09-01 04:44:20,665 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-09-01 04:44:20,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1117551177, now seen corresponding path program 2 times [2023-09-01 04:44:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:20,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764064419] [2023-09-01 04:44:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15