./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/queue_longest.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:11:10,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:11:10,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:11:10,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:11:10,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:11:11,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:11:11,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:11:11,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:11:11,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:11:11,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:11:11,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:11:11,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:11:11,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:11:11,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:11:11,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:11:11,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:11:11,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:11:11,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:11:11,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:11:11,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:11:11,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:11:11,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:11:11,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:11:11,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:11:11,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:11:11,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:11:11,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:11:11,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:11:11,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:11:11,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:11:11,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:11:11,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:11:11,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:11:11,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:11:11,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:11:11,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:11:11,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:11:11,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:11:11,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:11:11,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:11:11,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:11:11,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:11:11,097 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:11:11,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:11:11,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:11:11,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:11:11,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:11:11,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:11:11,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:11:11,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:11:11,101 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:11:11,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:11:11,102 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:11:11,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:11:11,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:11:11,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:11:11,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:11:11,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:11:11,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:11:11,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:11:11,103 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:11:11,103 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:11:11,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:11:11,104 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:11:11,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:11:11,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:11:11,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:11:11,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:11:11,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:11:11,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:11:11,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:11:11,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:11:11,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:11:11,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:11:11,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:11:11,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:11:11,106 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:11:11,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:11:11,107 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:11:11,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:11:11,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:11:11,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:11:11,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:11:11,455 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:11:11,456 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:11:11,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-08-30 08:11:12,704 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:11:13,002 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:11:13,003 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-08-30 08:11:13,020 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e600e468e/f0f522c3fd7744a5b66a10442f168b9e/FLAGa56fa9259 [2023-08-30 08:11:13,294 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e600e468e/f0f522c3fd7744a5b66a10442f168b9e [2023-08-30 08:11:13,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:11:13,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:11:13,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:11:13,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:11:13,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:11:13,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddc05ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13, skipping insertion in model container [2023-08-30 08:11:13,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:11:13,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:11:13,710 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_longest.i[43296,43309] [2023-08-30 08:11:13,714 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_longest.i[43503,43516] [2023-08-30 08:11:13,716 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_longest.i[43783,43796] [2023-08-30 08:11:13,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:11:13,730 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:11:13,791 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_longest.i[43296,43309] [2023-08-30 08:11:13,800 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_longest.i[43503,43516] [2023-08-30 08:11:13,806 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_longest.i[43783,43796] [2023-08-30 08:11:13,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:11:13,890 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:11:13,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13 WrapperNode [2023-08-30 08:11:13,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:11:13,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:11:13,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:11:13,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:11:13,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,959 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 261 [2023-08-30 08:11:13,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:11:13,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:11:13,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:11:13,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:11:13,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:14,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:14,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:14,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:14,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:14,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:11:14,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:11:14,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:11:14,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:11:14,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:14,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:11:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:14,073 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) [2023-08-30 08:11:14,081 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 [2023-08-30 08:11:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 08:11:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 08:11:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 08:11:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 08:11:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:11:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:11:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:11:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:11:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 08:11:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:11:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:11:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:11:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:11:14,110 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 08:11:14,278 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:11:14,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:11:14,663 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:11:14,672 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:11:14,673 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 08:11:14,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:11:14 BoogieIcfgContainer [2023-08-30 08:11:14,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:11:14,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:11:14,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:11:14,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:11:14,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:11:13" (1/3) ... [2023-08-30 08:11:14,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2315ab46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:11:14, skipping insertion in model container [2023-08-30 08:11:14,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (2/3) ... [2023-08-30 08:11:14,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2315ab46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:11:14, skipping insertion in model container [2023-08-30 08:11:14,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:11:14" (3/3) ... [2023-08-30 08:11:14,700 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-08-30 08:11:14,706 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:11:14,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:11:14,733 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 08:11:14,733 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:11:14,904 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 08:11:14,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 291 transitions, 598 flow [2023-08-30 08:11:15,072 INFO L130 PetriNetUnfolder]: 15/289 cut-off events. [2023-08-30 08:11:15,075 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:11:15,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 289 events. 15/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 464 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-08-30 08:11:15,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 291 transitions, 598 flow [2023-08-30 08:11:15,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 280 transitions, 569 flow [2023-08-30 08:11:15,102 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:11:15,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 280 transitions, 569 flow [2023-08-30 08:11:15,112 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 280 transitions, 569 flow [2023-08-30 08:11:15,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 280 transitions, 569 flow [2023-08-30 08:11:15,193 INFO L130 PetriNetUnfolder]: 15/280 cut-off events. [2023-08-30 08:11:15,194 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:11:15,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 280 events. 15/280 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 423 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-08-30 08:11:15,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 22068 [2023-08-30 08:11:22,984 INFO L134 LiptonReduction]: Checked pairs total: 50861 [2023-08-30 08:11:22,985 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-08-30 08:11:22,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:11:23,002 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;@90c017a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:11:23,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-30 08:11:23,007 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-08-30 08:11:23,008 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:11:23,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:23,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 08:11:23,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:23,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash -471379928, now seen corresponding path program 1 times [2023-08-30 08:11:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422429884] [2023-08-30 08:11:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:24,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:24,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422429884] [2023-08-30 08:11:24,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422429884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:24,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:24,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:11:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394862870] [2023-08-30 08:11:24,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:24,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:11:24,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:11:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:11:24,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 558 [2023-08-30 08:11:24,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:24,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:24,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 558 [2023-08-30 08:11:24,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:25,756 INFO L130 PetriNetUnfolder]: 3012/4951 cut-off events. [2023-08-30 08:11:25,756 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-30 08:11:25,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9773 conditions, 4951 events. 3012/4951 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 26092 event pairs, 2374 based on Foata normal form. 0/3452 useless extension candidates. Maximal degree in co-relation 9558. Up to 4712 conditions per place. [2023-08-30 08:11:25,788 INFO L137 encePairwiseOnDemand]: 548/558 looper letters, 70 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-08-30 08:11:25,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 337 flow [2023-08-30 08:11:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:11:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:11:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1607 transitions. [2023-08-30 08:11:25,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47998805256869775 [2023-08-30 08:11:25,810 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1607 transitions. [2023-08-30 08:11:25,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1607 transitions. [2023-08-30 08:11:25,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:25,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1607 transitions. [2023-08-30 08:11:25,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.8333333333333) internal successors, (1607), 6 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:25,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:25,836 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:25,837 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 165 flow. Second operand 6 states and 1607 transitions. [2023-08-30 08:11:25,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 337 flow [2023-08-30 08:11:25,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:11:25,847 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 216 flow [2023-08-30 08:11:25,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-08-30 08:11:25,854 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-08-30 08:11:25,855 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 216 flow [2023-08-30 08:11:25,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:25,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:25,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:25,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:11:25,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:25,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1727417925, now seen corresponding path program 1 times [2023-08-30 08:11:25,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:25,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573471738] [2023-08-30 08:11:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:25,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573471738] [2023-08-30 08:11:26,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573471738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:26,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:26,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:11:26,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46696014] [2023-08-30 08:11:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:26,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:11:26,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:11:26,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:11:27,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 558 [2023-08-30 08:11:27,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:27,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:27,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 558 [2023-08-30 08:11:27,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:28,410 INFO L130 PetriNetUnfolder]: 3238/5330 cut-off events. [2023-08-30 08:11:28,410 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2023-08-30 08:11:28,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10936 conditions, 5330 events. 3238/5330 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 28893 event pairs, 666 based on Foata normal form. 0/3769 useless extension candidates. Maximal degree in co-relation 9595. Up to 4756 conditions per place. [2023-08-30 08:11:28,441 INFO L137 encePairwiseOnDemand]: 549/558 looper letters, 127 selfloop transitions, 17 changer transitions 0/150 dead transitions. [2023-08-30 08:11:28,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 150 transitions, 654 flow [2023-08-30 08:11:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:11:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:11:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1648 transitions. [2023-08-30 08:11:28,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922341696535245 [2023-08-30 08:11:28,446 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1648 transitions. [2023-08-30 08:11:28,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1648 transitions. [2023-08-30 08:11:28,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:28,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1648 transitions. [2023-08-30 08:11:28,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 274.6666666666667) internal successors, (1648), 6 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:28,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:28,458 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:28,458 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 216 flow. Second operand 6 states and 1648 transitions. [2023-08-30 08:11:28,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 150 transitions, 654 flow [2023-08-30 08:11:28,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 150 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:11:28,466 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 310 flow [2023-08-30 08:11:28,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2023-08-30 08:11:28,468 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2023-08-30 08:11:28,468 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 310 flow [2023-08-30 08:11:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:28,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:28,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:28,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:11:28,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:28,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1727873625, now seen corresponding path program 2 times [2023-08-30 08:11:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:28,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102538206] [2023-08-30 08:11:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:28,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:28,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102538206] [2023-08-30 08:11:28,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102538206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:28,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:28,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:11:28,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037197121] [2023-08-30 08:11:28,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:28,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:11:28,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:28,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:11:28,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:11:29,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 558 [2023-08-30 08:11:29,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:29,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:29,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 558 [2023-08-30 08:11:29,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:29,763 INFO L130 PetriNetUnfolder]: 3284/5402 cut-off events. [2023-08-30 08:11:29,764 INFO L131 PetriNetUnfolder]: For 867/867 co-relation queries the response was YES. [2023-08-30 08:11:29,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11756 conditions, 5402 events. 3284/5402 cut-off events. For 867/867 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 29623 event pairs, 745 based on Foata normal form. 0/3847 useless extension candidates. Maximal degree in co-relation 10590. Up to 4706 conditions per place. [2023-08-30 08:11:29,804 INFO L137 encePairwiseOnDemand]: 551/558 looper letters, 119 selfloop transitions, 16 changer transitions 0/141 dead transitions. [2023-08-30 08:11:29,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 141 transitions, 697 flow [2023-08-30 08:11:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:11:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:11:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1380 transitions. [2023-08-30 08:11:29,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2023-08-30 08:11:29,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1380 transitions. [2023-08-30 08:11:29,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1380 transitions. [2023-08-30 08:11:29,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:29,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1380 transitions. [2023-08-30 08:11:29,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:29,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 558.0) internal successors, (3348), 6 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:29,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 558.0) internal successors, (3348), 6 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:29,818 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 310 flow. Second operand 5 states and 1380 transitions. [2023-08-30 08:11:29,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 141 transitions, 697 flow [2023-08-30 08:11:29,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 141 transitions, 679 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 08:11:29,831 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 376 flow [2023-08-30 08:11:29,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-08-30 08:11:29,833 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-08-30 08:11:29,833 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 376 flow [2023-08-30 08:11:29,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:29,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:29,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:29,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:11:29,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:29,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267153, now seen corresponding path program 1 times [2023-08-30 08:11:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:29,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174001674] [2023-08-30 08:11:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:29,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:30,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:30,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174001674] [2023-08-30 08:11:30,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174001674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:30,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:30,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:11:30,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516020416] [2023-08-30 08:11:30,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:30,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:11:30,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:11:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:11:30,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 558 [2023-08-30 08:11:30,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 255.8) internal successors, (1279), 5 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:30,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:30,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 558 [2023-08-30 08:11:30,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:31,538 INFO L130 PetriNetUnfolder]: 3280/5405 cut-off events. [2023-08-30 08:11:31,539 INFO L131 PetriNetUnfolder]: For 1542/1542 co-relation queries the response was YES. [2023-08-30 08:11:31,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11936 conditions, 5405 events. 3280/5405 cut-off events. For 1542/1542 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 29264 event pairs, 2430 based on Foata normal form. 0/3849 useless extension candidates. Maximal degree in co-relation 10737. Up to 5147 conditions per place. [2023-08-30 08:11:31,568 INFO L137 encePairwiseOnDemand]: 549/558 looper letters, 87 selfloop transitions, 10 changer transitions 0/103 dead transitions. [2023-08-30 08:11:31,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 103 transitions, 582 flow [2023-08-30 08:11:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:11:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:11:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1609 transitions. [2023-08-30 08:11:31,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805854241338112 [2023-08-30 08:11:31,573 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1609 transitions. [2023-08-30 08:11:31,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1609 transitions. [2023-08-30 08:11:31,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:31,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1609 transitions. [2023-08-30 08:11:31,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.1666666666667) internal successors, (1609), 6 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:31,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:31,583 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:31,583 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 376 flow. Second operand 6 states and 1609 transitions. [2023-08-30 08:11:31,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 103 transitions, 582 flow [2023-08-30 08:11:31,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 574 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 08:11:31,588 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 408 flow [2023-08-30 08:11:31,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2023-08-30 08:11:31,589 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2023-08-30 08:11:31,589 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 408 flow [2023-08-30 08:11:31,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.8) internal successors, (1279), 5 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:31,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:31,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:31,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:11:31,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:31,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:31,591 INFO L85 PathProgramCache]: Analyzing trace with hash 133239830, now seen corresponding path program 1 times [2023-08-30 08:11:31,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:31,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696119787] [2023-08-30 08:11:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:31,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:31,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:31,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696119787] [2023-08-30 08:11:31,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696119787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:31,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:31,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287425698] [2023-08-30 08:11:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:31,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:31,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:31,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 558 [2023-08-30 08:11:31,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:31,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:31,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 558 [2023-08-30 08:11:31,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:32,437 INFO L130 PetriNetUnfolder]: 5225/8793 cut-off events. [2023-08-30 08:11:32,437 INFO L131 PetriNetUnfolder]: For 2381/2418 co-relation queries the response was YES. [2023-08-30 08:11:32,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19046 conditions, 8793 events. 5225/8793 cut-off events. For 2381/2418 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 55682 event pairs, 2351 based on Foata normal form. 37/6603 useless extension candidates. Maximal degree in co-relation 17492. Up to 4846 conditions per place. [2023-08-30 08:11:32,484 INFO L137 encePairwiseOnDemand]: 553/558 looper letters, 159 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-08-30 08:11:32,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 172 transitions, 972 flow [2023-08-30 08:11:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2023-08-30 08:11:32,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692951015531661 [2023-08-30 08:11:32,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2023-08-30 08:11:32,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2023-08-30 08:11:32,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:32,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2023-08-30 08:11:32,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:32,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:32,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:32,495 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 408 flow. Second operand 3 states and 953 transitions. [2023-08-30 08:11:32,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 172 transitions, 972 flow [2023-08-30 08:11:32,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 956 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:11:32,502 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 408 flow [2023-08-30 08:11:32,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2023-08-30 08:11:32,505 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2023-08-30 08:11:32,505 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 408 flow [2023-08-30 08:11:32,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:32,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:32,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:32,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:11:32,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:32,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash 791606712, now seen corresponding path program 1 times [2023-08-30 08:11:32,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319890677] [2023-08-30 08:11:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:33,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319890677] [2023-08-30 08:11:33,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319890677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:33,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:33,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:11:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114982598] [2023-08-30 08:11:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:33,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:11:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:11:33,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:11:34,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 558 [2023-08-30 08:11:34,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:34,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:34,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 558 [2023-08-30 08:11:34,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:35,610 INFO L130 PetriNetUnfolder]: 5786/9558 cut-off events. [2023-08-30 08:11:35,611 INFO L131 PetriNetUnfolder]: For 2413/2413 co-relation queries the response was YES. [2023-08-30 08:11:35,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22022 conditions, 9558 events. 5786/9558 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 58105 event pairs, 1166 based on Foata normal form. 82/7379 useless extension candidates. Maximal degree in co-relation 13503. Up to 8279 conditions per place. [2023-08-30 08:11:35,675 INFO L137 encePairwiseOnDemand]: 548/558 looper letters, 140 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2023-08-30 08:11:35,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 166 transitions, 928 flow [2023-08-30 08:11:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:11:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:11:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1652 transitions. [2023-08-30 08:11:35,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934289127837515 [2023-08-30 08:11:35,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1652 transitions. [2023-08-30 08:11:35,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1652 transitions. [2023-08-30 08:11:35,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:35,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1652 transitions. [2023-08-30 08:11:35,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:35,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:35,691 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:35,691 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 408 flow. Second operand 6 states and 1652 transitions. [2023-08-30 08:11:35,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 166 transitions, 928 flow [2023-08-30 08:11:35,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 166 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:35,710 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 474 flow [2023-08-30 08:11:35,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2023-08-30 08:11:35,712 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2023-08-30 08:11:35,713 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 474 flow [2023-08-30 08:11:35,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:35,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:35,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:35,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 08:11:35,714 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:35,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash -926142348, now seen corresponding path program 2 times [2023-08-30 08:11:35,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:35,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364355996] [2023-08-30 08:11:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:35,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:36,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:36,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364355996] [2023-08-30 08:11:36,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364355996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:36,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:36,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:11:36,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357071152] [2023-08-30 08:11:36,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:36,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:11:36,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:36,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:11:36,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:11:36,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 558 [2023-08-30 08:11:36,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 474 flow. Second operand has 6 states, 6 states have (on average 253.66666666666666) internal successors, (1522), 6 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:36,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:36,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 558 [2023-08-30 08:11:36,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:37,718 INFO L130 PetriNetUnfolder]: 6018/9970 cut-off events. [2023-08-30 08:11:37,718 INFO L131 PetriNetUnfolder]: For 4056/4056 co-relation queries the response was YES. [2023-08-30 08:11:37,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23656 conditions, 9970 events. 6018/9970 cut-off events. For 4056/4056 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 60785 event pairs, 3130 based on Foata normal form. 82/7767 useless extension candidates. Maximal degree in co-relation 12052. Up to 8136 conditions per place. [2023-08-30 08:11:37,769 INFO L137 encePairwiseOnDemand]: 548/558 looper letters, 141 selfloop transitions, 23 changer transitions 0/170 dead transitions. [2023-08-30 08:11:37,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 170 transitions, 1012 flow [2023-08-30 08:11:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:11:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:11:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1657 transitions. [2023-08-30 08:11:37,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49492234169653526 [2023-08-30 08:11:37,774 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1657 transitions. [2023-08-30 08:11:37,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1657 transitions. [2023-08-30 08:11:37,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:37,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1657 transitions. [2023-08-30 08:11:37,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.1666666666667) internal successors, (1657), 6 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:37,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:37,783 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:37,783 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 474 flow. Second operand 6 states and 1657 transitions. [2023-08-30 08:11:37,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 170 transitions, 1012 flow [2023-08-30 08:11:37,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 170 transitions, 980 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:11:37,799 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 533 flow [2023-08-30 08:11:37,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=533, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2023-08-30 08:11:37,801 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 32 predicate places. [2023-08-30 08:11:37,802 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 533 flow [2023-08-30 08:11:37,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.66666666666666) internal successors, (1522), 6 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:37,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:37,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:37,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:11:37,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:37,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash 89131410, now seen corresponding path program 3 times [2023-08-30 08:11:37,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:37,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139993837] [2023-08-30 08:11:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:37,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:38,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:38,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139993837] [2023-08-30 08:11:38,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139993837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:38,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:38,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:11:38,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373841771] [2023-08-30 08:11:38,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:38,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:11:38,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:38,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:11:38,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:11:38,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 558 [2023-08-30 08:11:38,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 253.66666666666666) internal successors, (1522), 6 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:38,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:38,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 558 [2023-08-30 08:11:38,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:39,862 INFO L130 PetriNetUnfolder]: 6012/9917 cut-off events. [2023-08-30 08:11:39,862 INFO L131 PetriNetUnfolder]: For 6455/6455 co-relation queries the response was YES. [2023-08-30 08:11:39,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24269 conditions, 9917 events. 6012/9917 cut-off events. For 6455/6455 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 60320 event pairs, 1447 based on Foata normal form. 82/7719 useless extension candidates. Maximal degree in co-relation 20101. Up to 7790 conditions per place. [2023-08-30 08:11:39,911 INFO L137 encePairwiseOnDemand]: 549/558 looper letters, 141 selfloop transitions, 24 changer transitions 0/171 dead transitions. [2023-08-30 08:11:39,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 171 transitions, 1063 flow [2023-08-30 08:11:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:11:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:11:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1657 transitions. [2023-08-30 08:11:39,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49492234169653526 [2023-08-30 08:11:39,916 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1657 transitions. [2023-08-30 08:11:39,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1657 transitions. [2023-08-30 08:11:39,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:39,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1657 transitions. [2023-08-30 08:11:39,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.1666666666667) internal successors, (1657), 6 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:39,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:39,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:39,925 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 533 flow. Second operand 6 states and 1657 transitions. [2023-08-30 08:11:39,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 171 transitions, 1063 flow [2023-08-30 08:11:39,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 171 transitions, 1021 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 08:11:39,952 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 580 flow [2023-08-30 08:11:39,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2023-08-30 08:11:39,953 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 35 predicate places. [2023-08-30 08:11:39,953 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 580 flow [2023-08-30 08:11:39,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.66666666666666) internal successors, (1522), 6 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:39,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:39,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:39,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 08:11:39,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:39,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash -156159243, now seen corresponding path program 1 times [2023-08-30 08:11:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:39,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257040342] [2023-08-30 08:11:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:39,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:39,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:39,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257040342] [2023-08-30 08:11:39,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257040342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:39,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:39,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:39,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288415801] [2023-08-30 08:11:39,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:39,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:39,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:39,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:39,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:40,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 558 [2023-08-30 08:11:40,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 580 flow. Second operand has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:40,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:40,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 558 [2023-08-30 08:11:40,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:40,675 INFO L130 PetriNetUnfolder]: 4278/7094 cut-off events. [2023-08-30 08:11:40,675 INFO L131 PetriNetUnfolder]: For 3356/3369 co-relation queries the response was YES. [2023-08-30 08:11:40,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16468 conditions, 7094 events. 4278/7094 cut-off events. For 3356/3369 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 39308 event pairs, 2135 based on Foata normal form. 185/5285 useless extension candidates. Maximal degree in co-relation 14635. Up to 4581 conditions per place. [2023-08-30 08:11:40,712 INFO L137 encePairwiseOnDemand]: 554/558 looper letters, 109 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2023-08-30 08:11:40,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 121 transitions, 712 flow [2023-08-30 08:11:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-30 08:11:40,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477897252090801 [2023-08-30 08:11:40,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-30 08:11:40,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-30 08:11:40,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:40,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-30 08:11:40,719 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) [2023-08-30 08:11:40,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:40,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:40,722 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 580 flow. Second operand 3 states and 917 transitions. [2023-08-30 08:11:40,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 121 transitions, 712 flow [2023-08-30 08:11:40,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 625 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-08-30 08:11:40,728 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 327 flow [2023-08-30 08:11:40,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-30 08:11:40,730 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2023-08-30 08:11:40,732 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 327 flow [2023-08-30 08:11:40,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:40,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:40,733 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:40,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:11:40,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:40,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:40,734 INFO L85 PathProgramCache]: Analyzing trace with hash -917278505, now seen corresponding path program 1 times [2023-08-30 08:11:40,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:40,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571100297] [2023-08-30 08:11:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:40,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571100297] [2023-08-30 08:11:40,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571100297] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:11:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959099849] [2023-08-30 08:11:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:40,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:40,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:40,785 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) [2023-08-30 08:11:40,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 08:11:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:40,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:11:40,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:11:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:40,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:11:40,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959099849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:40,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:11:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 08:11:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865234996] [2023-08-30 08:11:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:40,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:11:40,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:11:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:11:40,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 558 [2023-08-30 08:11:40,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:40,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:40,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 558 [2023-08-30 08:11:40,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:41,578 INFO L130 PetriNetUnfolder]: 3764/6736 cut-off events. [2023-08-30 08:11:41,578 INFO L131 PetriNetUnfolder]: For 1255/1270 co-relation queries the response was YES. [2023-08-30 08:11:41,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14255 conditions, 6736 events. 3764/6736 cut-off events. For 1255/1270 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 40457 event pairs, 119 based on Foata normal form. 13/5095 useless extension candidates. Maximal degree in co-relation 12791. Up to 3217 conditions per place. [2023-08-30 08:11:41,610 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 170 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2023-08-30 08:11:41,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 183 transitions, 948 flow [2023-08-30 08:11:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:11:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:11:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2023-08-30 08:11:41,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2023-08-30 08:11:41,614 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2023-08-30 08:11:41,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2023-08-30 08:11:41,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:41,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2023-08-30 08:11:41,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 558.0) internal successors, (2790), 5 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 558.0) internal successors, (2790), 5 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,621 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 327 flow. Second operand 4 states and 1248 transitions. [2023-08-30 08:11:41,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 183 transitions, 948 flow [2023-08-30 08:11:41,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 183 transitions, 944 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:41,627 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 324 flow [2023-08-30 08:11:41,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2023-08-30 08:11:41,628 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2023-08-30 08:11:41,628 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 324 flow [2023-08-30 08:11:41,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:41,629 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:41,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 08:11:41,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 08:11:41,835 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:41,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:41,836 INFO L85 PathProgramCache]: Analyzing trace with hash -917278443, now seen corresponding path program 1 times [2023-08-30 08:11:41,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:41,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083634002] [2023-08-30 08:11:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:41,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:11:41,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:41,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083634002] [2023-08-30 08:11:41,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083634002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:41,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:41,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143330282] [2023-08-30 08:11:41,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:41,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:41,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:41,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:41,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 558 [2023-08-30 08:11:41,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:41,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 558 [2023-08-30 08:11:41,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:42,388 INFO L130 PetriNetUnfolder]: 3554/6420 cut-off events. [2023-08-30 08:11:42,388 INFO L131 PetriNetUnfolder]: For 1676/1691 co-relation queries the response was YES. [2023-08-30 08:11:42,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13675 conditions, 6420 events. 3554/6420 cut-off events. For 1676/1691 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 37862 event pairs, 477 based on Foata normal form. 13/4961 useless extension candidates. Maximal degree in co-relation 12310. Up to 4534 conditions per place. [2023-08-30 08:11:42,426 INFO L137 encePairwiseOnDemand]: 554/558 looper letters, 111 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2023-08-30 08:11:42,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 126 transitions, 673 flow [2023-08-30 08:11:42,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-30 08:11:42,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477897252090801 [2023-08-30 08:11:42,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-30 08:11:42,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-30 08:11:42,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:42,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-30 08:11:42,431 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) [2023-08-30 08:11:42,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,434 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 324 flow. Second operand 3 states and 917 transitions. [2023-08-30 08:11:42,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 126 transitions, 673 flow [2023-08-30 08:11:42,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 126 transitions, 670 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:11:42,439 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 333 flow [2023-08-30 08:11:42,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2023-08-30 08:11:42,440 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2023-08-30 08:11:42,440 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 333 flow [2023-08-30 08:11:42,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:42,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:42,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:11:42,441 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:42,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:42,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1914224002, now seen corresponding path program 1 times [2023-08-30 08:11:42,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:42,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895936819] [2023-08-30 08:11:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:42,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:42,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895936819] [2023-08-30 08:11:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895936819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:42,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939745702] [2023-08-30 08:11:42,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:42,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:42,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:42,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:42,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:42,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 558 [2023-08-30 08:11:42,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:42,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 558 [2023-08-30 08:11:42,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:43,037 INFO L130 PetriNetUnfolder]: 4137/7171 cut-off events. [2023-08-30 08:11:43,037 INFO L131 PetriNetUnfolder]: For 4724/4733 co-relation queries the response was YES. [2023-08-30 08:11:43,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17065 conditions, 7171 events. 4137/7171 cut-off events. For 4724/4733 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 42190 event pairs, 1699 based on Foata normal form. 9/5613 useless extension candidates. Maximal degree in co-relation 15486. Up to 5966 conditions per place. [2023-08-30 08:11:43,065 INFO L137 encePairwiseOnDemand]: 551/558 looper letters, 115 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-08-30 08:11:43,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 684 flow [2023-08-30 08:11:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-08-30 08:11:43,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501792114695341 [2023-08-30 08:11:43,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-08-30 08:11:43,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-08-30 08:11:43,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:43,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-08-30 08:11:43,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,074 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 333 flow. Second operand 3 states and 921 transitions. [2023-08-30 08:11:43,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 684 flow [2023-08-30 08:11:43,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:43,079 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 349 flow [2023-08-30 08:11:43,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-08-30 08:11:43,080 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2023-08-30 08:11:43,080 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 349 flow [2023-08-30 08:11:43,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:43,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:43,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 08:11:43,081 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:43,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash -784742033, now seen corresponding path program 1 times [2023-08-30 08:11:43,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:43,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286973500] [2023-08-30 08:11:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:43,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:44,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:44,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286973500] [2023-08-30 08:11:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286973500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:44,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:44,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 08:11:44,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852189644] [2023-08-30 08:11:44,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:11:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:11:44,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:11:46,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 558 [2023-08-30 08:11:46,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 349 flow. Second operand has 14 states, 14 states have (on average 234.35714285714286) internal successors, (3281), 14 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:46,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:46,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 558 [2023-08-30 08:11:46,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:47,421 INFO L130 PetriNetUnfolder]: 4284/7415 cut-off events. [2023-08-30 08:11:47,421 INFO L131 PetriNetUnfolder]: For 3660/3660 co-relation queries the response was YES. [2023-08-30 08:11:47,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18171 conditions, 7415 events. 4284/7415 cut-off events. For 3660/3660 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 41629 event pairs, 3472 based on Foata normal form. 0/6015 useless extension candidates. Maximal degree in co-relation 16520. Up to 6919 conditions per place. [2023-08-30 08:11:47,451 INFO L137 encePairwiseOnDemand]: 541/558 looper letters, 79 selfloop transitions, 28 changer transitions 1/115 dead transitions. [2023-08-30 08:11:47,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 675 flow [2023-08-30 08:11:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 08:11:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 08:11:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3595 transitions. [2023-08-30 08:11:47,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295101553166069 [2023-08-30 08:11:47,461 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3595 transitions. [2023-08-30 08:11:47,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3595 transitions. [2023-08-30 08:11:47,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:47,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3595 transitions. [2023-08-30 08:11:47,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 239.66666666666666) internal successors, (3595), 15 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,485 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,485 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 349 flow. Second operand 15 states and 3595 transitions. [2023-08-30 08:11:47,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 675 flow [2023-08-30 08:11:47,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 115 transitions, 671 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:47,494 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 525 flow [2023-08-30 08:11:47,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=525, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2023-08-30 08:11:47,494 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 42 predicate places. [2023-08-30 08:11:47,494 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 525 flow [2023-08-30 08:11:47,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 234.35714285714286) internal successors, (3281), 14 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:47,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:47,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:11:47,496 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:47,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:47,496 INFO L85 PathProgramCache]: Analyzing trace with hash -784742058, now seen corresponding path program 1 times [2023-08-30 08:11:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:47,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893612397] [2023-08-30 08:11:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:47,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:48,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:48,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893612397] [2023-08-30 08:11:48,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893612397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:48,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:48,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 08:11:48,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294816385] [2023-08-30 08:11:48,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:48,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:11:48,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:11:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:11:49,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 558 [2023-08-30 08:11:49,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 525 flow. Second operand has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:49,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:49,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 558 [2023-08-30 08:11:49,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:51,898 INFO L130 PetriNetUnfolder]: 13635/23372 cut-off events. [2023-08-30 08:11:51,898 INFO L131 PetriNetUnfolder]: For 9268/9268 co-relation queries the response was YES. [2023-08-30 08:11:51,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57303 conditions, 23372 events. 13635/23372 cut-off events. For 9268/9268 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 166979 event pairs, 4189 based on Foata normal form. 0/18556 useless extension candidates. Maximal degree in co-relation 40566. Up to 5784 conditions per place. [2023-08-30 08:11:52,023 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 363 selfloop transitions, 62 changer transitions 3/435 dead transitions. [2023-08-30 08:11:52,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 435 transitions, 2434 flow [2023-08-30 08:11:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 08:11:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 08:11:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4649 transitions. [2023-08-30 08:11:52,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46286340103544404 [2023-08-30 08:11:52,036 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4649 transitions. [2023-08-30 08:11:52,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4649 transitions. [2023-08-30 08:11:52,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:52,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4649 transitions. [2023-08-30 08:11:52,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.27777777777777) internal successors, (4649), 18 states have internal predecessors, (4649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:52,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:52,067 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:52,067 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 525 flow. Second operand 18 states and 4649 transitions. [2023-08-30 08:11:52,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 435 transitions, 2434 flow [2023-08-30 08:11:52,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 435 transitions, 2372 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-30 08:11:52,093 INFO L231 Difference]: Finished difference. Result has 136 places, 134 transitions, 748 flow [2023-08-30 08:11:52,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=748, PETRI_PLACES=136, PETRI_TRANSITIONS=134} [2023-08-30 08:11:52,093 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 60 predicate places. [2023-08-30 08:11:52,094 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 134 transitions, 748 flow [2023-08-30 08:11:52,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:52,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:52,095 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] [2023-08-30 08:11:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 08:11:52,095 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:52,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2011241202, now seen corresponding path program 1 times [2023-08-30 08:11:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241712216] [2023-08-30 08:11:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:52,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:53,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:53,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241712216] [2023-08-30 08:11:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241712216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:53,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:53,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 08:11:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712874784] [2023-08-30 08:11:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:53,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 08:11:53,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 08:11:53,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-30 08:11:55,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 558 [2023-08-30 08:11:55,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 134 transitions, 748 flow. Second operand has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:55,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:55,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 558 [2023-08-30 08:11:55,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:58,445 INFO L130 PetriNetUnfolder]: 14259/24570 cut-off events. [2023-08-30 08:11:58,445 INFO L131 PetriNetUnfolder]: For 14904/14904 co-relation queries the response was YES. [2023-08-30 08:11:58,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64960 conditions, 24570 events. 14259/24570 cut-off events. For 14904/14904 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 176384 event pairs, 9499 based on Foata normal form. 0/20249 useless extension candidates. Maximal degree in co-relation 64802. Up to 21776 conditions per place. [2023-08-30 08:11:58,588 INFO L137 encePairwiseOnDemand]: 542/558 looper letters, 210 selfloop transitions, 42 changer transitions 3/262 dead transitions. [2023-08-30 08:11:58,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 262 transitions, 1860 flow [2023-08-30 08:11:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 08:11:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 08:11:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3626 transitions. [2023-08-30 08:11:58,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332138590203106 [2023-08-30 08:11:58,597 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3626 transitions. [2023-08-30 08:11:58,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3626 transitions. [2023-08-30 08:11:58,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:58,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3626 transitions. [2023-08-30 08:11:58,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 241.73333333333332) internal successors, (3626), 15 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:58,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:58,617 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:58,617 INFO L175 Difference]: Start difference. First operand has 136 places, 134 transitions, 748 flow. Second operand 15 states and 3626 transitions. [2023-08-30 08:11:58,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 262 transitions, 1860 flow [2023-08-30 08:11:58,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 262 transitions, 1803 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-30 08:11:58,672 INFO L231 Difference]: Finished difference. Result has 154 places, 145 transitions, 936 flow [2023-08-30 08:11:58,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=936, PETRI_PLACES=154, PETRI_TRANSITIONS=145} [2023-08-30 08:11:58,673 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 78 predicate places. [2023-08-30 08:11:58,674 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 145 transitions, 936 flow [2023-08-30 08:11:58,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:58,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:58,675 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] [2023-08-30 08:11:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:11:58,675 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:11:58,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash -300438654, now seen corresponding path program 2 times [2023-08-30 08:11:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:58,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534692530] [2023-08-30 08:11:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:58,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534692530] [2023-08-30 08:11:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534692530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:59,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:59,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 08:11:59,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17533483] [2023-08-30 08:11:59,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:59,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 08:11:59,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 08:11:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-08-30 08:12:01,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 558 [2023-08-30 08:12:01,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 145 transitions, 936 flow. Second operand has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:01,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:01,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 558 [2023-08-30 08:12:01,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:03,887 INFO L130 PetriNetUnfolder]: 14761/25387 cut-off events. [2023-08-30 08:12:03,888 INFO L131 PetriNetUnfolder]: For 17129/17129 co-relation queries the response was YES. [2023-08-30 08:12:04,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68331 conditions, 25387 events. 14761/25387 cut-off events. For 17129/17129 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 182953 event pairs, 7000 based on Foata normal form. 26/21082 useless extension candidates. Maximal degree in co-relation 68167. Up to 20686 conditions per place. [2023-08-30 08:12:04,092 INFO L137 encePairwiseOnDemand]: 542/558 looper letters, 200 selfloop transitions, 53 changer transitions 3/263 dead transitions. [2023-08-30 08:12:04,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 263 transitions, 2001 flow [2023-08-30 08:12:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 08:12:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 08:12:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3385 transitions. [2023-08-30 08:12:04,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43330773169482845 [2023-08-30 08:12:04,099 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3385 transitions. [2023-08-30 08:12:04,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3385 transitions. [2023-08-30 08:12:04,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:04,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3385 transitions. [2023-08-30 08:12:04,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 241.78571428571428) internal successors, (3385), 14 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:04,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 558.0) internal successors, (8370), 15 states have internal predecessors, (8370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:04,114 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 558.0) internal successors, (8370), 15 states have internal predecessors, (8370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:04,114 INFO L175 Difference]: Start difference. First operand has 154 places, 145 transitions, 936 flow. Second operand 14 states and 3385 transitions. [2023-08-30 08:12:04,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 263 transitions, 2001 flow [2023-08-30 08:12:04,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 263 transitions, 1957 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-30 08:12:04,333 INFO L231 Difference]: Finished difference. Result has 170 places, 155 transitions, 1145 flow [2023-08-30 08:12:04,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1145, PETRI_PLACES=170, PETRI_TRANSITIONS=155} [2023-08-30 08:12:04,334 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 94 predicate places. [2023-08-30 08:12:04,334 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 155 transitions, 1145 flow [2023-08-30 08:12:04,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:04,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:04,335 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] [2023-08-30 08:12:04,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 08:12:04,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:04,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:04,336 INFO L85 PathProgramCache]: Analyzing trace with hash 808081645, now seen corresponding path program 1 times [2023-08-30 08:12:04,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:04,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343258796] [2023-08-30 08:12:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:04,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:04,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:04,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343258796] [2023-08-30 08:12:04,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343258796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:04,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:04,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 08:12:04,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300805791] [2023-08-30 08:12:04,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:04,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:12:04,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:04,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:12:04,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:12:05,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 558 [2023-08-30 08:12:05,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 155 transitions, 1145 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:05,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:05,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 558 [2023-08-30 08:12:05,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:10,370 INFO L130 PetriNetUnfolder]: 19383/33022 cut-off events. [2023-08-30 08:12:10,370 INFO L131 PetriNetUnfolder]: For 23193/23193 co-relation queries the response was YES. [2023-08-30 08:12:10,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89813 conditions, 33022 events. 19383/33022 cut-off events. For 23193/23193 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 236954 event pairs, 6683 based on Foata normal form. 129/27308 useless extension candidates. Maximal degree in co-relation 89643. Up to 17777 conditions per place. [2023-08-30 08:12:10,602 INFO L137 encePairwiseOnDemand]: 542/558 looper letters, 365 selfloop transitions, 77 changer transitions 0/449 dead transitions. [2023-08-30 08:12:10,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 449 transitions, 2996 flow [2023-08-30 08:12:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 08:12:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 08:12:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3856 transitions. [2023-08-30 08:12:10,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46069295101553165 [2023-08-30 08:12:10,608 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3856 transitions. [2023-08-30 08:12:10,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3856 transitions. [2023-08-30 08:12:10,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:10,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3856 transitions. [2023-08-30 08:12:10,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 257.06666666666666) internal successors, (3856), 15 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:10,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:10,622 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:10,622 INFO L175 Difference]: Start difference. First operand has 170 places, 155 transitions, 1145 flow. Second operand 15 states and 3856 transitions. [2023-08-30 08:12:10,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 449 transitions, 2996 flow [2023-08-30 08:12:10,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 449 transitions, 2905 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-30 08:12:10,717 INFO L231 Difference]: Finished difference. Result has 182 places, 176 transitions, 1408 flow [2023-08-30 08:12:10,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1408, PETRI_PLACES=182, PETRI_TRANSITIONS=176} [2023-08-30 08:12:10,718 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 106 predicate places. [2023-08-30 08:12:10,718 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 176 transitions, 1408 flow [2023-08-30 08:12:10,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:10,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:10,719 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] [2023-08-30 08:12:10,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 08:12:10,719 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:10,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash -643986808, now seen corresponding path program 3 times [2023-08-30 08:12:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:10,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027588502] [2023-08-30 08:12:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:10,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:12,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:12,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027588502] [2023-08-30 08:12:12,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027588502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:12,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:12,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 08:12:12,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893578448] [2023-08-30 08:12:12,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:12,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 08:12:12,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:12,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 08:12:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-30 08:12:13,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 558 [2023-08-30 08:12:13,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 176 transitions, 1408 flow. Second operand has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:13,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:13,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 558 [2023-08-30 08:12:13,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:17,563 INFO L130 PetriNetUnfolder]: 19273/33324 cut-off events. [2023-08-30 08:12:17,563 INFO L131 PetriNetUnfolder]: For 29935/29943 co-relation queries the response was YES. [2023-08-30 08:12:17,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93856 conditions, 33324 events. 19273/33324 cut-off events. For 29935/29943 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 243832 event pairs, 9045 based on Foata normal form. 26/27645 useless extension candidates. Maximal degree in co-relation 72007. Up to 27264 conditions per place. [2023-08-30 08:12:17,940 INFO L137 encePairwiseOnDemand]: 542/558 looper letters, 233 selfloop transitions, 60 changer transitions 3/303 dead transitions. [2023-08-30 08:12:17,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 303 transitions, 2591 flow [2023-08-30 08:12:17,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 08:12:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 08:12:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3855 transitions. [2023-08-30 08:12:17,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43178763440860213 [2023-08-30 08:12:17,945 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3855 transitions. [2023-08-30 08:12:17,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3855 transitions. [2023-08-30 08:12:17,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:17,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3855 transitions. [2023-08-30 08:12:17,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 240.9375) internal successors, (3855), 16 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:17,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 558.0) internal successors, (9486), 17 states have internal predecessors, (9486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:17,959 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 558.0) internal successors, (9486), 17 states have internal predecessors, (9486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:17,959 INFO L175 Difference]: Start difference. First operand has 182 places, 176 transitions, 1408 flow. Second operand 16 states and 3855 transitions. [2023-08-30 08:12:17,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 303 transitions, 2591 flow [2023-08-30 08:12:18,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 303 transitions, 2552 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 08:12:18,086 INFO L231 Difference]: Finished difference. Result has 195 places, 181 transitions, 1570 flow [2023-08-30 08:12:18,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1570, PETRI_PLACES=195, PETRI_TRANSITIONS=181} [2023-08-30 08:12:18,087 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 119 predicate places. [2023-08-30 08:12:18,087 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 181 transitions, 1570 flow [2023-08-30 08:12:18,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:18,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:18,088 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] [2023-08-30 08:12:18,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 08:12:18,089 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:18,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1443120322, now seen corresponding path program 4 times [2023-08-30 08:12:18,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:18,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357082541] [2023-08-30 08:12:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:18,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:19,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:19,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357082541] [2023-08-30 08:12:19,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357082541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:19,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:19,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 08:12:19,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620208011] [2023-08-30 08:12:19,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:19,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 08:12:19,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 08:12:19,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-30 08:12:20,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 558 [2023-08-30 08:12:20,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 181 transitions, 1570 flow. Second operand has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:20,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:20,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 558 [2023-08-30 08:12:20,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:24,226 INFO L130 PetriNetUnfolder]: 19269/33468 cut-off events. [2023-08-30 08:12:24,226 INFO L131 PetriNetUnfolder]: For 33297/33301 co-relation queries the response was YES. [2023-08-30 08:12:24,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95462 conditions, 33468 events. 19269/33468 cut-off events. For 33297/33301 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 246273 event pairs, 8974 based on Foata normal form. 26/27783 useless extension candidates. Maximal degree in co-relation 95285. Up to 27036 conditions per place. [2023-08-30 08:12:24,515 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 243 selfloop transitions, 60 changer transitions 3/313 dead transitions. [2023-08-30 08:12:24,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 313 transitions, 2762 flow [2023-08-30 08:12:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 08:12:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 08:12:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3633 transitions. [2023-08-30 08:12:24,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43405017921146954 [2023-08-30 08:12:24,519 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3633 transitions. [2023-08-30 08:12:24,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3633 transitions. [2023-08-30 08:12:24,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:24,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3633 transitions. [2023-08-30 08:12:24,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 242.2) internal successors, (3633), 15 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:24,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:24,528 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:24,528 INFO L175 Difference]: Start difference. First operand has 195 places, 181 transitions, 1570 flow. Second operand 15 states and 3633 transitions. [2023-08-30 08:12:24,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 313 transitions, 2762 flow [2023-08-30 08:12:24,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 313 transitions, 2664 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-08-30 08:12:24,667 INFO L231 Difference]: Finished difference. Result has 200 places, 185 transitions, 1661 flow [2023-08-30 08:12:24,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1661, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2023-08-30 08:12:24,667 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 124 predicate places. [2023-08-30 08:12:24,668 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 1661 flow [2023-08-30 08:12:24,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:24,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:24,669 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:24,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 08:12:24,669 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:24,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash 452925267, now seen corresponding path program 1 times [2023-08-30 08:12:24,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:24,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171338754] [2023-08-30 08:12:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:24,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:12:24,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171338754] [2023-08-30 08:12:24,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171338754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:24,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:24,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:12:24,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004819501] [2023-08-30 08:12:24,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:24,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:12:24,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:24,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:12:24,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:12:24,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 558 [2023-08-30 08:12:24,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 1661 flow. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:24,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:24,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 558 [2023-08-30 08:12:24,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:28,278 INFO L130 PetriNetUnfolder]: 17083/29862 cut-off events. [2023-08-30 08:12:28,278 INFO L131 PetriNetUnfolder]: For 38663/38692 co-relation queries the response was YES. [2023-08-30 08:12:28,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87246 conditions, 29862 events. 17083/29862 cut-off events. For 38663/38692 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 216843 event pairs, 6908 based on Foata normal form. 29/25488 useless extension candidates. Maximal degree in co-relation 87067. Up to 21962 conditions per place. [2023-08-30 08:12:28,701 INFO L137 encePairwiseOnDemand]: 553/558 looper letters, 196 selfloop transitions, 4 changer transitions 0/216 dead transitions. [2023-08-30 08:12:28,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 216 transitions, 2196 flow [2023-08-30 08:12:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:12:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:12:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 897 transitions. [2023-08-30 08:12:28,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53584229390681 [2023-08-30 08:12:28,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 897 transitions. [2023-08-30 08:12:28,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 897 transitions. [2023-08-30 08:12:28,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:28,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 897 transitions. [2023-08-30 08:12:28,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:28,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:28,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:28,705 INFO L175 Difference]: Start difference. First operand has 200 places, 185 transitions, 1661 flow. Second operand 3 states and 897 transitions. [2023-08-30 08:12:28,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 216 transitions, 2196 flow [2023-08-30 08:12:28,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 216 transitions, 2126 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-30 08:12:28,819 INFO L231 Difference]: Finished difference. Result has 192 places, 184 transitions, 1599 flow [2023-08-30 08:12:28,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1599, PETRI_PLACES=192, PETRI_TRANSITIONS=184} [2023-08-30 08:12:28,820 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 116 predicate places. [2023-08-30 08:12:28,820 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 184 transitions, 1599 flow [2023-08-30 08:12:28,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:28,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:28,821 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:28,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 08:12:28,821 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:28,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash 452925224, now seen corresponding path program 1 times [2023-08-30 08:12:28,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731310894] [2023-08-30 08:12:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:28,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:28,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:28,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731310894] [2023-08-30 08:12:28,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731310894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:28,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:28,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:12:28,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938110966] [2023-08-30 08:12:28,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:28,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:12:28,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:12:28,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:12:28,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 558 [2023-08-30 08:12:28,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 184 transitions, 1599 flow. Second operand has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:28,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:28,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 558 [2023-08-30 08:12:28,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:31,879 INFO L130 PetriNetUnfolder]: 15334/27056 cut-off events. [2023-08-30 08:12:31,879 INFO L131 PetriNetUnfolder]: For 40379/40408 co-relation queries the response was YES. [2023-08-30 08:12:32,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80574 conditions, 27056 events. 15334/27056 cut-off events. For 40379/40408 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 193803 event pairs, 7635 based on Foata normal form. 1052/24495 useless extension candidates. Maximal degree in co-relation 80395. Up to 23339 conditions per place. [2023-08-30 08:12:32,112 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 174 selfloop transitions, 1 changer transitions 0/191 dead transitions. [2023-08-30 08:12:32,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 191 transitions, 1989 flow [2023-08-30 08:12:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:12:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:12:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-30 08:12:32,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526284348864994 [2023-08-30 08:12:32,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-30 08:12:32,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-30 08:12:32,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:32,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-30 08:12:32,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:32,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:32,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:32,117 INFO L175 Difference]: Start difference. First operand has 192 places, 184 transitions, 1599 flow. Second operand 3 states and 881 transitions. [2023-08-30 08:12:32,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 191 transitions, 1989 flow [2023-08-30 08:12:32,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 191 transitions, 1985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:12:32,252 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 1589 flow [2023-08-30 08:12:32,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1589, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2023-08-30 08:12:32,252 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 115 predicate places. [2023-08-30 08:12:32,252 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 1589 flow [2023-08-30 08:12:32,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:32,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:32,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:32,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 08:12:32,253 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:32,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:32,253 INFO L85 PathProgramCache]: Analyzing trace with hash -742070961, now seen corresponding path program 1 times [2023-08-30 08:12:32,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:32,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954422948] [2023-08-30 08:12:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:32,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:32,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:32,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954422948] [2023-08-30 08:12:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954422948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:32,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:32,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 08:12:32,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726281817] [2023-08-30 08:12:32,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:32,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 08:12:32,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 08:12:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-30 08:12:33,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 558 [2023-08-30 08:12:33,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 1589 flow. Second operand has 12 states, 12 states have (on average 236.83333333333334) internal successors, (2842), 12 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:33,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:33,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 558 [2023-08-30 08:12:33,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:39,270 INFO L130 PetriNetUnfolder]: 24546/42781 cut-off events. [2023-08-30 08:12:39,270 INFO L131 PetriNetUnfolder]: For 48141/48149 co-relation queries the response was YES. [2023-08-30 08:12:39,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124636 conditions, 42781 events. 24546/42781 cut-off events. For 48141/48149 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 326680 event pairs, 6614 based on Foata normal form. 0/37559 useless extension candidates. Maximal degree in co-relation 124456. Up to 9046 conditions per place. [2023-08-30 08:12:39,649 INFO L137 encePairwiseOnDemand]: 537/558 looper letters, 388 selfloop transitions, 122 changer transitions 3/520 dead transitions. [2023-08-30 08:12:39,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 520 transitions, 4018 flow [2023-08-30 08:12:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 08:12:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 08:12:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4586 transitions. [2023-08-30 08:12:39,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565909996017523 [2023-08-30 08:12:39,654 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4586 transitions. [2023-08-30 08:12:39,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4586 transitions. [2023-08-30 08:12:39,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:39,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4586 transitions. [2023-08-30 08:12:39,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 254.77777777777777) internal successors, (4586), 18 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:39,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:39,666 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:39,666 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 1589 flow. Second operand 18 states and 4586 transitions. [2023-08-30 08:12:39,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 520 transitions, 4018 flow [2023-08-30 08:12:39,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 520 transitions, 4015 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:12:39,904 INFO L231 Difference]: Finished difference. Result has 213 places, 236 transitions, 2443 flow [2023-08-30 08:12:39,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2443, PETRI_PLACES=213, PETRI_TRANSITIONS=236} [2023-08-30 08:12:39,905 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 137 predicate places. [2023-08-30 08:12:39,905 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 236 transitions, 2443 flow [2023-08-30 08:12:39,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 236.83333333333334) internal successors, (2842), 12 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:39,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:39,906 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] [2023-08-30 08:12:39,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 08:12:39,906 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:39,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:39,907 INFO L85 PathProgramCache]: Analyzing trace with hash -742070962, now seen corresponding path program 1 times [2023-08-30 08:12:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:39,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280584311] [2023-08-30 08:12:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:39,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:40,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:40,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280584311] [2023-08-30 08:12:40,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280584311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:40,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:40,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 08:12:40,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62779951] [2023-08-30 08:12:40,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:40,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 08:12:40,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:40,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 08:12:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 08:12:41,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 558 [2023-08-30 08:12:41,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 236 transitions, 2443 flow. Second operand has 12 states, 12 states have (on average 238.83333333333334) internal successors, (2866), 12 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:41,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:41,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 558 [2023-08-30 08:12:41,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:47,494 INFO L130 PetriNetUnfolder]: 25311/44168 cut-off events. [2023-08-30 08:12:47,494 INFO L131 PetriNetUnfolder]: For 82349/82349 co-relation queries the response was YES. [2023-08-30 08:12:47,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141566 conditions, 44168 events. 25311/44168 cut-off events. For 82349/82349 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 339537 event pairs, 19648 based on Foata normal form. 26/39619 useless extension candidates. Maximal degree in co-relation 141377. Up to 39569 conditions per place. [2023-08-30 08:12:47,946 INFO L137 encePairwiseOnDemand]: 545/558 looper letters, 268 selfloop transitions, 32 changer transitions 3/310 dead transitions. [2023-08-30 08:12:47,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 310 transitions, 3495 flow [2023-08-30 08:12:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:12:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:12:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2976 transitions. [2023-08-30 08:12:47,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 08:12:47,949 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2976 transitions. [2023-08-30 08:12:47,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2976 transitions. [2023-08-30 08:12:47,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:47,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2976 transitions. [2023-08-30 08:12:47,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:47,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:47,958 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:47,958 INFO L175 Difference]: Start difference. First operand has 213 places, 236 transitions, 2443 flow. Second operand 12 states and 2976 transitions. [2023-08-30 08:12:47,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 310 transitions, 3495 flow [2023-08-30 08:12:48,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 310 transitions, 3416 flow, removed 20 selfloop flow, removed 10 redundant places. [2023-08-30 08:12:48,493 INFO L231 Difference]: Finished difference. Result has 220 places, 245 transitions, 2599 flow [2023-08-30 08:12:48,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2599, PETRI_PLACES=220, PETRI_TRANSITIONS=245} [2023-08-30 08:12:48,494 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 144 predicate places. [2023-08-30 08:12:48,494 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 245 transitions, 2599 flow [2023-08-30 08:12:48,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 238.83333333333334) internal successors, (2866), 12 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:48,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:48,494 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] [2023-08-30 08:12:48,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 08:12:48,495 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:48,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1314933643, now seen corresponding path program 1 times [2023-08-30 08:12:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368164797] [2023-08-30 08:12:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:48,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:49,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368164797] [2023-08-30 08:12:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368164797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:49,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:49,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 08:12:49,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752807456] [2023-08-30 08:12:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:49,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:12:49,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:12:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:12:50,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 558 [2023-08-30 08:12:50,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 245 transitions, 2599 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) [2023-08-30 08:12:50,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:50,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 558 [2023-08-30 08:12:50,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:56,418 INFO L130 PetriNetUnfolder]: 25035/43768 cut-off events. [2023-08-30 08:12:56,418 INFO L131 PetriNetUnfolder]: For 79456/79456 co-relation queries the response was YES. [2023-08-30 08:12:56,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140334 conditions, 43768 events. 25035/43768 cut-off events. For 79456/79456 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 335428 event pairs, 15850 based on Foata normal form. 104/39658 useless extension candidates. Maximal degree in co-relation 121844. Up to 36100 conditions per place. [2023-08-30 08:12:56,877 INFO L137 encePairwiseOnDemand]: 545/558 looper letters, 275 selfloop transitions, 47 changer transitions 3/332 dead transitions. [2023-08-30 08:12:56,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 332 transitions, 3661 flow [2023-08-30 08:12:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 08:12:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 08:12:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2759 transitions. [2023-08-30 08:12:56,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2023-08-30 08:12:56,880 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2759 transitions. [2023-08-30 08:12:56,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2759 transitions. [2023-08-30 08:12:56,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:56,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2759 transitions. [2023-08-30 08:12:56,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 250.8181818181818) internal successors, (2759), 11 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:56,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 558.0) internal successors, (6696), 12 states have internal predecessors, (6696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:56,887 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 558.0) internal successors, (6696), 12 states have internal predecessors, (6696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:56,887 INFO L175 Difference]: Start difference. First operand has 220 places, 245 transitions, 2599 flow. Second operand 11 states and 2759 transitions. [2023-08-30 08:12:56,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 332 transitions, 3661 flow [2023-08-30 08:12:57,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 332 transitions, 3617 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 08:12:57,185 INFO L231 Difference]: Finished difference. Result has 226 places, 246 transitions, 2677 flow [2023-08-30 08:12:57,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2677, PETRI_PLACES=226, PETRI_TRANSITIONS=246} [2023-08-30 08:12:57,186 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 150 predicate places. [2023-08-30 08:12:57,186 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 246 transitions, 2677 flow [2023-08-30 08:12:57,187 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) [2023-08-30 08:12:57,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:57,187 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] [2023-08-30 08:12:57,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 08:12:57,187 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:12:57,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1031241843, now seen corresponding path program 2 times [2023-08-30 08:12:57,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:57,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035579494] [2023-08-30 08:12:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:57,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:58,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:58,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035579494] [2023-08-30 08:12:58,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035579494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:58,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:58,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 08:12:58,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054375872] [2023-08-30 08:12:58,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:58,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:12:58,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:58,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:12:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:12:59,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 558 [2023-08-30 08:12:59,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 246 transitions, 2677 flow. Second operand has 13 states, 13 states have (on average 235.76923076923077) internal successors, (3065), 13 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:59,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:59,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 558 [2023-08-30 08:12:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:06,063 INFO L130 PetriNetUnfolder]: 26285/45887 cut-off events. [2023-08-30 08:13:06,063 INFO L131 PetriNetUnfolder]: For 86660/86664 co-relation queries the response was YES. [2023-08-30 08:13:06,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147883 conditions, 45887 events. 26285/45887 cut-off events. For 86660/86664 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 354074 event pairs, 10939 based on Foata normal form. 63/41632 useless extension candidates. Maximal degree in co-relation 129045. Up to 35194 conditions per place. [2023-08-30 08:13:06,559 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 317 selfloop transitions, 65 changer transitions 0/389 dead transitions. [2023-08-30 08:13:06,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 389 transitions, 4139 flow [2023-08-30 08:13:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 08:13:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 08:13:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3227 transitions. [2023-08-30 08:13:06,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448580093741384 [2023-08-30 08:13:06,562 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3227 transitions. [2023-08-30 08:13:06,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3227 transitions. [2023-08-30 08:13:06,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:06,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3227 transitions. [2023-08-30 08:13:06,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 248.23076923076923) internal successors, (3227), 13 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 558.0) internal successors, (7812), 14 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,571 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 558.0) internal successors, (7812), 14 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,571 INFO L175 Difference]: Start difference. First operand has 226 places, 246 transitions, 2677 flow. Second operand 13 states and 3227 transitions. [2023-08-30 08:13:06,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 389 transitions, 4139 flow [2023-08-30 08:13:06,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 389 transitions, 4056 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-30 08:13:06,926 INFO L231 Difference]: Finished difference. Result has 232 places, 258 transitions, 2904 flow [2023-08-30 08:13:06,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2904, PETRI_PLACES=232, PETRI_TRANSITIONS=258} [2023-08-30 08:13:06,927 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 156 predicate places. [2023-08-30 08:13:06,927 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 258 transitions, 2904 flow [2023-08-30 08:13:06,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 235.76923076923077) internal successors, (3065), 13 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:06,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:06,927 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] [2023-08-30 08:13:06,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 08:13:06,928 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:06,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1031241844, now seen corresponding path program 1 times [2023-08-30 08:13:06,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:06,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612176942] [2023-08-30 08:13:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:06,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:07,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:07,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612176942] [2023-08-30 08:13:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612176942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:07,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 08:13:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725185156] [2023-08-30 08:13:07,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:07,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:13:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:13:07,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:13:08,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 558 [2023-08-30 08:13:08,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 258 transitions, 2904 flow. Second operand has 13 states, 13 states have (on average 233.76923076923077) internal successors, (3039), 13 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:08,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:08,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 558 [2023-08-30 08:13:08,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:15,342 INFO L130 PetriNetUnfolder]: 26033/45197 cut-off events. [2023-08-30 08:13:15,343 INFO L131 PetriNetUnfolder]: For 100439/100443 co-relation queries the response was YES. [2023-08-30 08:13:15,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150250 conditions, 45197 events. 26033/45197 cut-off events. For 100439/100443 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 345992 event pairs, 10862 based on Foata normal form. 234/41642 useless extension candidates. Maximal degree in co-relation 131256. Up to 24459 conditions per place. [2023-08-30 08:13:15,888 INFO L137 encePairwiseOnDemand]: 538/558 looper letters, 361 selfloop transitions, 141 changer transitions 0/509 dead transitions. [2023-08-30 08:13:15,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 509 transitions, 4833 flow [2023-08-30 08:13:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 08:13:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 08:13:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3790 transitions. [2023-08-30 08:13:15,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45280764635603343 [2023-08-30 08:13:15,892 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3790 transitions. [2023-08-30 08:13:15,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3790 transitions. [2023-08-30 08:13:15,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:15,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3790 transitions. [2023-08-30 08:13:15,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 252.66666666666666) internal successors, (3790), 15 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:15,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:15,913 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:15,913 INFO L175 Difference]: Start difference. First operand has 232 places, 258 transitions, 2904 flow. Second operand 15 states and 3790 transitions. [2023-08-30 08:13:15,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 509 transitions, 4833 flow [2023-08-30 08:13:16,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 509 transitions, 4766 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-30 08:13:16,307 INFO L231 Difference]: Finished difference. Result has 241 places, 270 transitions, 3331 flow [2023-08-30 08:13:16,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3331, PETRI_PLACES=241, PETRI_TRANSITIONS=270} [2023-08-30 08:13:16,308 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 165 predicate places. [2023-08-30 08:13:16,308 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 270 transitions, 3331 flow [2023-08-30 08:13:16,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 233.76923076923077) internal successors, (3039), 13 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:16,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:16,309 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] [2023-08-30 08:13:16,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 08:13:16,309 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:16,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash -624278245, now seen corresponding path program 3 times [2023-08-30 08:13:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:16,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899948768] [2023-08-30 08:13:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:17,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:17,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899948768] [2023-08-30 08:13:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899948768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:17,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:17,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 08:13:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136356535] [2023-08-30 08:13:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:17,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:13:17,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:13:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:13:18,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 558 [2023-08-30 08:13:18,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 270 transitions, 3331 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) [2023-08-30 08:13:18,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:18,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 558 [2023-08-30 08:13:18,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:26,096 INFO L130 PetriNetUnfolder]: 26067/45588 cut-off events. [2023-08-30 08:13:26,096 INFO L131 PetriNetUnfolder]: For 129353/129365 co-relation queries the response was YES. [2023-08-30 08:13:26,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158852 conditions, 45588 events. 26067/45588 cut-off events. For 129353/129365 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 351799 event pairs, 10545 based on Foata normal form. 52/41922 useless extension candidates. Maximal degree in co-relation 138773. Up to 34592 conditions per place. [2023-08-30 08:13:26,556 INFO L137 encePairwiseOnDemand]: 541/558 looper letters, 329 selfloop transitions, 63 changer transitions 0/399 dead transitions. [2023-08-30 08:13:26,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 399 transitions, 4722 flow [2023-08-30 08:13:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 08:13:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 08:13:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3275 transitions. [2023-08-30 08:13:26,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514750482492418 [2023-08-30 08:13:26,559 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3275 transitions. [2023-08-30 08:13:26,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3275 transitions. [2023-08-30 08:13:26,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:26,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3275 transitions. [2023-08-30 08:13:26,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 251.92307692307693) internal successors, (3275), 13 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:26,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 558.0) internal successors, (7812), 14 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:26,567 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 558.0) internal successors, (7812), 14 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:26,567 INFO L175 Difference]: Start difference. First operand has 241 places, 270 transitions, 3331 flow. Second operand 13 states and 3275 transitions. [2023-08-30 08:13:26,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 399 transitions, 4722 flow [2023-08-30 08:13:27,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 399 transitions, 4612 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-30 08:13:27,257 INFO L231 Difference]: Finished difference. Result has 248 places, 271 transitions, 3384 flow [2023-08-30 08:13:27,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3384, PETRI_PLACES=248, PETRI_TRANSITIONS=271} [2023-08-30 08:13:27,258 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 172 predicate places. [2023-08-30 08:13:27,258 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 271 transitions, 3384 flow [2023-08-30 08:13:27,259 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) [2023-08-30 08:13:27,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:27,259 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] [2023-08-30 08:13:27,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 08:13:27,259 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:27,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:27,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1529360933, now seen corresponding path program 4 times [2023-08-30 08:13:27,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:27,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424015176] [2023-08-30 08:13:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:27,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:28,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424015176] [2023-08-30 08:13:28,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424015176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:28,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:28,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 08:13:28,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773738341] [2023-08-30 08:13:28,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:28,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:13:28,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:13:28,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:13:29,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 558 [2023-08-30 08:13:29,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 271 transitions, 3384 flow. Second operand has 13 states, 13 states have (on average 240.76923076923077) internal successors, (3130), 13 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:29,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:29,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 558 [2023-08-30 08:13:29,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:36,153 INFO L130 PetriNetUnfolder]: 25012/43890 cut-off events. [2023-08-30 08:13:36,153 INFO L131 PetriNetUnfolder]: For 122465/122465 co-relation queries the response was YES. [2023-08-30 08:13:36,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151734 conditions, 43890 events. 25012/43890 cut-off events. For 122465/122465 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 336538 event pairs, 11293 based on Foata normal form. 104/40276 useless extension candidates. Maximal degree in co-relation 122570. Up to 34234 conditions per place. [2023-08-30 08:13:36,587 INFO L137 encePairwiseOnDemand]: 545/558 looper letters, 297 selfloop transitions, 51 changer transitions 3/358 dead transitions. [2023-08-30 08:13:36,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 358 transitions, 4441 flow [2023-08-30 08:13:36,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:13:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:13:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3012 transitions. [2023-08-30 08:13:36,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449820788530466 [2023-08-30 08:13:36,590 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3012 transitions. [2023-08-30 08:13:36,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3012 transitions. [2023-08-30 08:13:36,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:36,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3012 transitions. [2023-08-30 08:13:36,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:36,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:36,598 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:36,598 INFO L175 Difference]: Start difference. First operand has 248 places, 271 transitions, 3384 flow. Second operand 12 states and 3012 transitions. [2023-08-30 08:13:36,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 358 transitions, 4441 flow [2023-08-30 08:13:37,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 358 transitions, 4327 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-30 08:13:37,286 INFO L231 Difference]: Finished difference. Result has 248 places, 265 transitions, 3304 flow [2023-08-30 08:13:37,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3304, PETRI_PLACES=248, PETRI_TRANSITIONS=265} [2023-08-30 08:13:37,287 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 172 predicate places. [2023-08-30 08:13:37,287 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 265 transitions, 3304 flow [2023-08-30 08:13:37,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.76923076923077) internal successors, (3130), 13 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:37,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:37,288 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] [2023-08-30 08:13:37,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 08:13:37,288 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:37,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:37,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1649093189, now seen corresponding path program 1 times [2023-08-30 08:13:37,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:37,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164145501] [2023-08-30 08:13:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:37,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:37,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164145501] [2023-08-30 08:13:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164145501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:37,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:37,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:13:37,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809784040] [2023-08-30 08:13:37,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:37,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:37,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:37,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:37,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:37,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 558 [2023-08-30 08:13:37,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 265 transitions, 3304 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:37,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:37,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 558 [2023-08-30 08:13:37,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:40,120 INFO L130 PetriNetUnfolder]: 10486/18589 cut-off events. [2023-08-30 08:13:40,120 INFO L131 PetriNetUnfolder]: For 63631/63704 co-relation queries the response was YES. [2023-08-30 08:13:40,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65502 conditions, 18589 events. 10486/18589 cut-off events. For 63631/63704 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 121759 event pairs, 6200 based on Foata normal form. 657/18259 useless extension candidates. Maximal degree in co-relation 58218. Up to 9326 conditions per place. [2023-08-30 08:13:40,244 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 205 selfloop transitions, 2 changer transitions 1/221 dead transitions. [2023-08-30 08:13:40,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 221 transitions, 3073 flow [2023-08-30 08:13:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 891 transitions. [2023-08-30 08:13:40,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2023-08-30 08:13:40,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 891 transitions. [2023-08-30 08:13:40,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 891 transitions. [2023-08-30 08:13:40,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:40,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 891 transitions. [2023-08-30 08:13:40,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:40,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:40,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:40,248 INFO L175 Difference]: Start difference. First operand has 248 places, 265 transitions, 3304 flow. Second operand 3 states and 891 transitions. [2023-08-30 08:13:40,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 221 transitions, 3073 flow [2023-08-30 08:13:40,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 221 transitions, 2911 flow, removed 8 selfloop flow, removed 16 redundant places. [2023-08-30 08:13:40,454 INFO L231 Difference]: Finished difference. Result has 234 places, 205 transitions, 2436 flow [2023-08-30 08:13:40,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2436, PETRI_PLACES=234, PETRI_TRANSITIONS=205} [2023-08-30 08:13:40,455 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 158 predicate places. [2023-08-30 08:13:40,455 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 205 transitions, 2436 flow [2023-08-30 08:13:40,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:40,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:40,456 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] [2023-08-30 08:13:40,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 08:13:40,456 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:40,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1137275059, now seen corresponding path program 1 times [2023-08-30 08:13:40,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:40,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535550770] [2023-08-30 08:13:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:40,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:40,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:40,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535550770] [2023-08-30 08:13:40,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535550770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:40,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:40,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:13:40,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17885075] [2023-08-30 08:13:40,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:40,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:13:40,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:13:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:13:40,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 558 [2023-08-30 08:13:40,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 205 transitions, 2436 flow. Second operand has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:40,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:40,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 558 [2023-08-30 08:13:40,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:42,416 INFO L130 PetriNetUnfolder]: 8129/15289 cut-off events. [2023-08-30 08:13:42,417 INFO L131 PetriNetUnfolder]: For 42283/42298 co-relation queries the response was YES. [2023-08-30 08:13:42,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52767 conditions, 15289 events. 8129/15289 cut-off events. For 42283/42298 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 99515 event pairs, 1784 based on Foata normal form. 1337/15865 useless extension candidates. Maximal degree in co-relation 46331. Up to 11200 conditions per place. [2023-08-30 08:13:42,543 INFO L137 encePairwiseOnDemand]: 552/558 looper letters, 196 selfloop transitions, 9 changer transitions 0/218 dead transitions. [2023-08-30 08:13:42,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 218 transitions, 2923 flow [2023-08-30 08:13:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:13:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:13:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-30 08:13:42,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526284348864994 [2023-08-30 08:13:42,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-30 08:13:42,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-30 08:13:42,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:42,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-30 08:13:42,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:42,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:42,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:42,546 INFO L175 Difference]: Start difference. First operand has 234 places, 205 transitions, 2436 flow. Second operand 3 states and 881 transitions. [2023-08-30 08:13:42,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 218 transitions, 2923 flow [2023-08-30 08:13:42,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 218 transitions, 2919 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:13:42,937 INFO L231 Difference]: Finished difference. Result has 234 places, 205 transitions, 2450 flow [2023-08-30 08:13:42,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2450, PETRI_PLACES=234, PETRI_TRANSITIONS=205} [2023-08-30 08:13:42,938 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 158 predicate places. [2023-08-30 08:13:42,938 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 205 transitions, 2450 flow [2023-08-30 08:13:42,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:42,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:42,939 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] [2023-08-30 08:13:42,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 08:13:42,939 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:42,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash -635526647, now seen corresponding path program 1 times [2023-08-30 08:13:42,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:42,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791333462] [2023-08-30 08:13:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:42,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:43,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:43,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791333462] [2023-08-30 08:13:43,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791333462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:43,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:43,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 08:13:43,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624206228] [2023-08-30 08:13:43,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:43,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 08:13:43,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 08:13:43,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-30 08:13:43,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 558 [2023-08-30 08:13:43,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 205 transitions, 2450 flow. Second operand has 9 states, 9 states have (on average 250.55555555555554) internal successors, (2255), 9 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:43,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:43,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 558 [2023-08-30 08:13:43,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:45,956 INFO L130 PetriNetUnfolder]: 7796/14857 cut-off events. [2023-08-30 08:13:45,957 INFO L131 PetriNetUnfolder]: For 41153/41222 co-relation queries the response was YES. [2023-08-30 08:13:46,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52754 conditions, 14857 events. 7796/14857 cut-off events. For 41153/41222 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 98207 event pairs, 1943 based on Foata normal form. 23/14190 useless extension candidates. Maximal degree in co-relation 46618. Up to 4394 conditions per place. [2023-08-30 08:13:46,277 INFO L137 encePairwiseOnDemand]: 543/558 looper letters, 207 selfloop transitions, 62 changer transitions 1/276 dead transitions. [2023-08-30 08:13:46,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 276 transitions, 3326 flow [2023-08-30 08:13:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 08:13:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 08:13:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2358 transitions. [2023-08-30 08:13:46,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2023-08-30 08:13:46,280 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2358 transitions. [2023-08-30 08:13:46,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2358 transitions. [2023-08-30 08:13:46,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:46,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2358 transitions. [2023-08-30 08:13:46,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:46,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 558.0) internal successors, (5580), 10 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:46,285 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 558.0) internal successors, (5580), 10 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:46,285 INFO L175 Difference]: Start difference. First operand has 234 places, 205 transitions, 2450 flow. Second operand 9 states and 2358 transitions. [2023-08-30 08:13:46,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 276 transitions, 3326 flow [2023-08-30 08:13:46,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 276 transitions, 3308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:13:46,440 INFO L231 Difference]: Finished difference. Result has 244 places, 209 transitions, 2644 flow [2023-08-30 08:13:46,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2644, PETRI_PLACES=244, PETRI_TRANSITIONS=209} [2023-08-30 08:13:46,440 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 168 predicate places. [2023-08-30 08:13:46,440 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 209 transitions, 2644 flow [2023-08-30 08:13:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 250.55555555555554) internal successors, (2255), 9 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:46,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:46,441 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] [2023-08-30 08:13:46,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 08:13:46,441 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:46,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash -420185818, now seen corresponding path program 1 times [2023-08-30 08:13:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695268075] [2023-08-30 08:13:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:47,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695268075] [2023-08-30 08:13:47,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695268075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:47,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:47,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 08:13:47,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932278399] [2023-08-30 08:13:47,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:47,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:13:47,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:47,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:13:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:13:48,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 558 [2023-08-30 08:13:48,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 209 transitions, 2644 flow. Second operand has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:48,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:48,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 558 [2023-08-30 08:13:48,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:51,562 INFO L130 PetriNetUnfolder]: 8274/15821 cut-off events. [2023-08-30 08:13:51,563 INFO L131 PetriNetUnfolder]: For 47160/47211 co-relation queries the response was YES. [2023-08-30 08:13:51,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56473 conditions, 15821 events. 8274/15821 cut-off events. For 47160/47211 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 106989 event pairs, 2519 based on Foata normal form. 17/15267 useless extension candidates. Maximal degree in co-relation 55246. Up to 4469 conditions per place. [2023-08-30 08:13:51,706 INFO L137 encePairwiseOnDemand]: 536/558 looper letters, 364 selfloop transitions, 120 changer transitions 7/497 dead transitions. [2023-08-30 08:13:51,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 497 transitions, 4999 flow [2023-08-30 08:13:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:13:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:13:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7877 transitions. [2023-08-30 08:13:51,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411402329749104 [2023-08-30 08:13:51,714 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7877 transitions. [2023-08-30 08:13:51,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7877 transitions. [2023-08-30 08:13:51,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:51,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7877 transitions. [2023-08-30 08:13:51,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 246.15625) internal successors, (7877), 32 states have internal predecessors, (7877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:51,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 558.0) internal successors, (18414), 33 states have internal predecessors, (18414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:51,740 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 558.0) internal successors, (18414), 33 states have internal predecessors, (18414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:51,741 INFO L175 Difference]: Start difference. First operand has 244 places, 209 transitions, 2644 flow. Second operand 32 states and 7877 transitions. [2023-08-30 08:13:51,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 497 transitions, 4999 flow [2023-08-30 08:13:51,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 497 transitions, 4941 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 08:13:51,977 INFO L231 Difference]: Finished difference. Result has 275 places, 224 transitions, 3007 flow [2023-08-30 08:13:51,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3007, PETRI_PLACES=275, PETRI_TRANSITIONS=224} [2023-08-30 08:13:51,978 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 199 predicate places. [2023-08-30 08:13:51,978 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 224 transitions, 3007 flow [2023-08-30 08:13:51,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:51,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:51,979 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] [2023-08-30 08:13:51,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 08:13:51,979 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:51,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash -176405184, now seen corresponding path program 2 times [2023-08-30 08:13:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:51,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749679686] [2023-08-30 08:13:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:51,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:53,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:53,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749679686] [2023-08-30 08:13:53,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749679686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:53,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:53,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-30 08:13:53,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241104097] [2023-08-30 08:13:53,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 08:13:53,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:53,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 08:13:53,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-08-30 08:13:55,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 558 [2023-08-30 08:13:55,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 224 transitions, 3007 flow. Second operand has 19 states, 19 states have (on average 225.68421052631578) internal successors, (4288), 19 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:55,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:13:55,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 558 [2023-08-30 08:13:55,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:13:57,996 INFO L130 PetriNetUnfolder]: 8266/15868 cut-off events. [2023-08-30 08:13:57,997 INFO L131 PetriNetUnfolder]: For 52372/52428 co-relation queries the response was YES. [2023-08-30 08:13:58,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58327 conditions, 15868 events. 8266/15868 cut-off events. For 52372/52428 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 107465 event pairs, 3740 based on Foata normal form. 38/15398 useless extension candidates. Maximal degree in co-relation 57025. Up to 9290 conditions per place. [2023-08-30 08:13:58,374 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 262 selfloop transitions, 76 changer transitions 12/356 dead transitions. [2023-08-30 08:13:58,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 356 transitions, 4348 flow [2023-08-30 08:13:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:13:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:13:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4447 transitions. [2023-08-30 08:13:58,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419449160535748 [2023-08-30 08:13:58,392 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4447 transitions. [2023-08-30 08:13:58,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4447 transitions. [2023-08-30 08:13:58,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:13:58,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4447 transitions. [2023-08-30 08:13:58,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 234.05263157894737) internal successors, (4447), 19 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:58,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 558.0) internal successors, (11160), 20 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:58,402 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 558.0) internal successors, (11160), 20 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:58,403 INFO L175 Difference]: Start difference. First operand has 275 places, 224 transitions, 3007 flow. Second operand 19 states and 4447 transitions. [2023-08-30 08:13:58,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 356 transitions, 4348 flow [2023-08-30 08:13:58,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 356 transitions, 4101 flow, removed 10 selfloop flow, removed 21 redundant places. [2023-08-30 08:13:58,625 INFO L231 Difference]: Finished difference. Result has 275 places, 230 transitions, 3001 flow [2023-08-30 08:13:58,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3001, PETRI_PLACES=275, PETRI_TRANSITIONS=230} [2023-08-30 08:13:58,626 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 199 predicate places. [2023-08-30 08:13:58,626 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 230 transitions, 3001 flow [2023-08-30 08:13:58,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 225.68421052631578) internal successors, (4288), 19 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:13:58,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:13:58,626 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] [2023-08-30 08:13:58,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 08:13:58,627 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:13:58,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:13:58,627 INFO L85 PathProgramCache]: Analyzing trace with hash 994909586, now seen corresponding path program 3 times [2023-08-30 08:13:58,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:13:58,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366665702] [2023-08-30 08:13:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:13:58,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:13:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:13:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:13:59,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:13:59,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366665702] [2023-08-30 08:13:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366665702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:13:59,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:13:59,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-30 08:13:59,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231305885] [2023-08-30 08:13:59,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:13:59,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 08:13:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:13:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 08:13:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-08-30 08:14:01,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 558 [2023-08-30 08:14:01,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 230 transitions, 3001 flow. Second operand has 19 states, 19 states have (on average 233.68421052631578) internal successors, (4440), 19 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:01,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:14:01,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 558 [2023-08-30 08:14:01,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:14:05,004 INFO L130 PetriNetUnfolder]: 8258/15787 cut-off events. [2023-08-30 08:14:05,004 INFO L131 PetriNetUnfolder]: For 52621/52684 co-relation queries the response was YES. [2023-08-30 08:14:05,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57980 conditions, 15787 events. 8258/15787 cut-off events. For 52621/52684 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 106042 event pairs, 1385 based on Foata normal form. 87/15347 useless extension candidates. Maximal degree in co-relation 57158. Up to 5312 conditions per place. [2023-08-30 08:14:05,094 INFO L137 encePairwiseOnDemand]: 537/558 looper letters, 273 selfloop transitions, 132 changer transitions 7/418 dead transitions. [2023-08-30 08:14:05,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 418 transitions, 4637 flow [2023-08-30 08:14:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 08:14:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 08:14:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5826 transitions. [2023-08-30 08:14:05,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350358422939068 [2023-08-30 08:14:05,097 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5826 transitions. [2023-08-30 08:14:05,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5826 transitions. [2023-08-30 08:14:05,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:14:05,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5826 transitions. [2023-08-30 08:14:05,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 242.75) internal successors, (5826), 24 states have internal predecessors, (5826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:05,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:05,107 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:05,107 INFO L175 Difference]: Start difference. First operand has 275 places, 230 transitions, 3001 flow. Second operand 24 states and 5826 transitions. [2023-08-30 08:14:05,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 418 transitions, 4637 flow [2023-08-30 08:14:05,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 418 transitions, 4480 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-08-30 08:14:05,297 INFO L231 Difference]: Finished difference. Result has 285 places, 235 transitions, 3198 flow [2023-08-30 08:14:05,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3198, PETRI_PLACES=285, PETRI_TRANSITIONS=235} [2023-08-30 08:14:05,298 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 209 predicate places. [2023-08-30 08:14:05,299 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 235 transitions, 3198 flow [2023-08-30 08:14:05,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 233.68421052631578) internal successors, (4440), 19 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:05,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:14:05,300 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] [2023-08-30 08:14:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 08:14:05,300 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:14:05,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:14:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash -26871209, now seen corresponding path program 2 times [2023-08-30 08:14:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:14:05,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002346758] [2023-08-30 08:14:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:14:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:14:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:14:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:14:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:14:06,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002346758] [2023-08-30 08:14:06,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002346758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:14:06,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:14:06,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-30 08:14:06,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296833539] [2023-08-30 08:14:06,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:14:06,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 08:14:06,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:14:06,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 08:14:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-08-30 08:14:07,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 558 [2023-08-30 08:14:07,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 235 transitions, 3198 flow. Second operand has 19 states, 19 states have (on average 229.68421052631578) internal successors, (4364), 19 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:07,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:14:07,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 558 [2023-08-30 08:14:07,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:14:10,392 INFO L130 PetriNetUnfolder]: 8321/16031 cut-off events. [2023-08-30 08:14:10,392 INFO L131 PetriNetUnfolder]: For 54859/54889 co-relation queries the response was YES. [2023-08-30 08:14:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59903 conditions, 16031 events. 8321/16031 cut-off events. For 54859/54889 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 108838 event pairs, 1651 based on Foata normal form. 50/15569 useless extension candidates. Maximal degree in co-relation 56823. Up to 7031 conditions per place. [2023-08-30 08:14:10,484 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 253 selfloop transitions, 85 changer transitions 12/356 dead transitions. [2023-08-30 08:14:10,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 356 transitions, 4484 flow [2023-08-30 08:14:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 08:14:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 08:14:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4282 transitions. [2023-08-30 08:14:10,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263241736360016 [2023-08-30 08:14:10,487 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4282 transitions. [2023-08-30 08:14:10,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4282 transitions. [2023-08-30 08:14:10,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:14:10,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4282 transitions. [2023-08-30 08:14:10,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 237.88888888888889) internal successors, (4282), 18 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:10,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:10,494 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:10,494 INFO L175 Difference]: Start difference. First operand has 285 places, 235 transitions, 3198 flow. Second operand 18 states and 4282 transitions. [2023-08-30 08:14:10,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 356 transitions, 4484 flow [2023-08-30 08:14:10,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 356 transitions, 4237 flow, removed 13 selfloop flow, removed 19 redundant places. [2023-08-30 08:14:10,708 INFO L231 Difference]: Finished difference. Result has 285 places, 237 transitions, 3197 flow [2023-08-30 08:14:10,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2949, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3197, PETRI_PLACES=285, PETRI_TRANSITIONS=237} [2023-08-30 08:14:10,708 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 209 predicate places. [2023-08-30 08:14:10,708 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 237 transitions, 3197 flow [2023-08-30 08:14:10,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 229.68421052631578) internal successors, (4364), 19 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:10,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:14:10,709 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] [2023-08-30 08:14:10,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 08:14:10,709 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:14:10,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:14:10,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2072442385, now seen corresponding path program 1 times [2023-08-30 08:14:10,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:14:10,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219675982] [2023-08-30 08:14:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:14:10,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:14:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:14:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:14:12,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:14:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219675982] [2023-08-30 08:14:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219675982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:14:12,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:14:12,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 08:14:12,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627777625] [2023-08-30 08:14:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:14:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:14:12,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:14:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:14:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:14:13,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 558 [2023-08-30 08:14:13,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 237 transitions, 3197 flow. Second operand has 16 states, 16 states have (on average 241.1875) internal successors, (3859), 16 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:13,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:14:13,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 558 [2023-08-30 08:14:13,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:14:16,064 INFO L130 PetriNetUnfolder]: 9135/17541 cut-off events. [2023-08-30 08:14:16,064 INFO L131 PetriNetUnfolder]: For 61969/62038 co-relation queries the response was YES. [2023-08-30 08:14:16,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65612 conditions, 17541 events. 9135/17541 cut-off events. For 61969/62038 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 121367 event pairs, 5694 based on Foata normal form. 23/16979 useless extension candidates. Maximal degree in co-relation 62564. Up to 13426 conditions per place. [2023-08-30 08:14:16,229 INFO L137 encePairwiseOnDemand]: 544/558 looper letters, 297 selfloop transitions, 39 changer transitions 8/350 dead transitions. [2023-08-30 08:14:16,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 350 transitions, 4546 flow [2023-08-30 08:14:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:14:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:14:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3039 transitions. [2023-08-30 08:14:16,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538530465949821 [2023-08-30 08:14:16,232 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3039 transitions. [2023-08-30 08:14:16,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3039 transitions. [2023-08-30 08:14:16,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:14:16,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3039 transitions. [2023-08-30 08:14:16,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 253.25) internal successors, (3039), 12 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:16,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:16,239 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:16,239 INFO L175 Difference]: Start difference. First operand has 285 places, 237 transitions, 3197 flow. Second operand 12 states and 3039 transitions. [2023-08-30 08:14:16,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 350 transitions, 4546 flow [2023-08-30 08:14:16,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 350 transitions, 4432 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-30 08:14:16,487 INFO L231 Difference]: Finished difference. Result has 288 places, 242 transitions, 3269 flow [2023-08-30 08:14:16,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3269, PETRI_PLACES=288, PETRI_TRANSITIONS=242} [2023-08-30 08:14:16,488 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 212 predicate places. [2023-08-30 08:14:16,488 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 242 transitions, 3269 flow [2023-08-30 08:14:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 241.1875) internal successors, (3859), 16 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:14:16,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:14:16,489 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] [2023-08-30 08:14:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 08:14:16,489 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 08:14:16,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:14:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash -136744271, now seen corresponding path program 1 times [2023-08-30 08:14:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:14:16,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366909040] [2023-08-30 08:14:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:14:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:14:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15