./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/queue.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/queue.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:34:16,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:34:16,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:34:16,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:34:16,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:34:16,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:34:16,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:34:16,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:34:16,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:34:16,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:34:16,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:34:16,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:34:16,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:34:16,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:34:16,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:34:16,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:34:16,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:34:16,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:34:16,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:34:16,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:34:16,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:34:16,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:34:16,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:34:16,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:34:16,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:34:16,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:34:16,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:34:16,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:34:16,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:34:16,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:34:16,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:34:16,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:34:16,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:34:16,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:34:16,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:34:16,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:34:16,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:34:16,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:34:16,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:34:16,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:34:16,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:34:16,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:34:16,521 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:34:16,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:34:16,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:34:16,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:34:16,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:34:16,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:34:16,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:34:16,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:34:16,524 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:34:16,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:34:16,525 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:34:16,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:34:16,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:34:16,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:34:16,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:34:16,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:34:16,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:34:16,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:34:16,527 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:34:16,527 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:34:16,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:34:16,527 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:34:16,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:34:16,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:34:16,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:34:16,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:34:16,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:34:16,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:34:16,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:34:16,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:34:16,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:34:16,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:34:16,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:34:16,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:34:16,530 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:34:16,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:34:16,530 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:34:16,531 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:34:16,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:34:16,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:34:16,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:34:16,864 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:34:16,864 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:34:16,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2023-08-30 12:34:17,965 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:34:18,257 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:34:18,257 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2023-08-30 12:34:18,270 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11ae0ee7/dc0b8feec888430c8ac973279cfd719b/FLAGf6e8688d0 [2023-08-30 12:34:18,286 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11ae0ee7/dc0b8feec888430c8ac973279cfd719b [2023-08-30 12:34:18,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:34:18,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:34:18,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:34:18,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:34:18,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:34:18,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:18,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d35f025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18, skipping insertion in model container [2023-08-30 12:34:18,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:18,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:34:18,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:34:18,732 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2023-08-30 12:34:18,737 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2023-08-30 12:34:18,755 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2023-08-30 12:34:18,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:34:18,775 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:34:18,837 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2023-08-30 12:34:18,842 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2023-08-30 12:34:18,846 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2023-08-30 12:34:18,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:34:18,917 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:34:18,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18 WrapperNode [2023-08-30 12:34:18,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:34:18,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:34:18,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:34:18,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:34:18,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:18,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,001 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 270 [2023-08-30 12:34:19,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:34:19,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:34:19,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:34:19,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:34:19,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,059 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:34:19,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:34:19,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:34:19,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:34:19,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:19,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:34:19,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:19,102 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 12:34:19,121 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 12:34:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:34:19,146 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:34:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:34:19,146 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:34:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:34:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:34:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:34:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:34:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 12:34:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:34:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:34:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:34:19,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:34:19,149 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 12:34:19,289 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:34:19,290 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:34:19,664 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:34:19,674 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:34:19,675 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:34:19,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:34:19 BoogieIcfgContainer [2023-08-30 12:34:19,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:34:19,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:34:19,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:34:19,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:34:19,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:34:18" (1/3) ... [2023-08-30 12:34:19,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722890cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:34:19, skipping insertion in model container [2023-08-30 12:34:19,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18" (2/3) ... [2023-08-30 12:34:19,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722890cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:34:19, skipping insertion in model container [2023-08-30 12:34:19,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:34:19" (3/3) ... [2023-08-30 12:34:19,688 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-08-30 12:34:19,695 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:34:19,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:34:19,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 12:34:19,703 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:34:19,866 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:34:19,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 299 transitions, 614 flow [2023-08-30 12:34:19,998 INFO L130 PetriNetUnfolder]: 15/297 cut-off events. [2023-08-30 12:34:19,998 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:34:20,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 297 events. 15/297 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 469 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-08-30 12:34:20,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 299 transitions, 614 flow [2023-08-30 12:34:20,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 284 transitions, 577 flow [2023-08-30 12:34:20,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:34:20,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 284 transitions, 577 flow [2023-08-30 12:34:20,035 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 284 transitions, 577 flow [2023-08-30 12:34:20,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 284 transitions, 577 flow [2023-08-30 12:34:20,091 INFO L130 PetriNetUnfolder]: 14/284 cut-off events. [2023-08-30 12:34:20,091 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:34:20,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 284 events. 14/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 423 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-08-30 12:34:20,103 INFO L119 LiptonReduction]: Number of co-enabled transitions 22068 [2023-08-30 12:34:29,281 INFO L134 LiptonReduction]: Checked pairs total: 48983 [2023-08-30 12:34:29,282 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-08-30 12:34:29,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:34:29,299 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;@4cb9b46f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:34:29,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-30 12:34:29,303 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2023-08-30 12:34:29,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:34:29,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:29,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:34:29,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:29,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash -140422463, now seen corresponding path program 1 times [2023-08-30 12:34:29,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:29,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600421197] [2023-08-30 12:34:29,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:29,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:30,662 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 12:34:30,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:30,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600421197] [2023-08-30 12:34:30,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600421197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:30,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:30,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:34:30,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262173941] [2023-08-30 12:34:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:30,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:34:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:34:30,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:34:31,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 563 [2023-08-30 12:34:31,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:31,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:31,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 563 [2023-08-30 12:34:31,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:32,124 INFO L130 PetriNetUnfolder]: 3023/5050 cut-off events. [2023-08-30 12:34:32,125 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-08-30 12:34:32,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9959 conditions, 5050 events. 3023/5050 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 26908 event pairs, 2536 based on Foata normal form. 78/3610 useless extension candidates. Maximal degree in co-relation 9738. Up to 4799 conditions per place. [2023-08-30 12:34:32,154 INFO L137 encePairwiseOnDemand]: 553/563 looper letters, 71 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2023-08-30 12:34:32,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 341 flow [2023-08-30 12:34:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1656 transitions. [2023-08-30 12:34:32,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49023090586145646 [2023-08-30 12:34:32,173 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1656 transitions. [2023-08-30 12:34:32,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1656 transitions. [2023-08-30 12:34:32,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:32,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1656 transitions. [2023-08-30 12:34:32,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:32,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:32,195 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:32,197 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 6 states and 1656 transitions. [2023-08-30 12:34:32,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 341 flow [2023-08-30 12:34:32,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:34:32,204 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 218 flow [2023-08-30 12:34:32,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-08-30 12:34:32,209 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2023-08-30 12:34:32,209 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 218 flow [2023-08-30 12:34:32,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:32,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:32,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:32,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:34:32,211 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 12:34:32,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash -52854247, now seen corresponding path program 1 times [2023-08-30 12:34:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:32,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157268826] [2023-08-30 12:34:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:32,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:32,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157268826] [2023-08-30 12:34:32,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157268826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:32,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:32,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:34:32,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933723072] [2023-08-30 12:34:32,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:32,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:34:32,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:34:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:34:33,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 563 [2023-08-30 12:34:33,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:33,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:33,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 563 [2023-08-30 12:34:33,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:34,582 INFO L130 PetriNetUnfolder]: 3240/5399 cut-off events. [2023-08-30 12:34:34,582 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2023-08-30 12:34:34,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 5399 events. 3240/5399 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 29442 event pairs, 792 based on Foata normal form. 27/3869 useless extension candidates. Maximal degree in co-relation 10619. Up to 4845 conditions per place. [2023-08-30 12:34:34,614 INFO L137 encePairwiseOnDemand]: 554/563 looper letters, 134 selfloop transitions, 14 changer transitions 0/154 dead transitions. [2023-08-30 12:34:34,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 668 flow [2023-08-30 12:34:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2023-08-30 12:34:34,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032563647128478 [2023-08-30 12:34:34,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2023-08-30 12:34:34,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2023-08-30 12:34:34,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:34,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2023-08-30 12:34:34,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,631 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,632 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 218 flow. Second operand 6 states and 1700 transitions. [2023-08-30 12:34:34,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 668 flow [2023-08-30 12:34:34,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 154 transitions, 668 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:34:34,640 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 304 flow [2023-08-30 12:34:34,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2023-08-30 12:34:34,641 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2023-08-30 12:34:34,641 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 304 flow [2023-08-30 12:34:34,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:34,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:34,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:34:34,643 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 12:34:34,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:34,646 INFO L85 PathProgramCache]: Analyzing trace with hash -58126417, now seen corresponding path program 2 times [2023-08-30 12:34:34,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:34,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767264714] [2023-08-30 12:34:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:34,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:35,123 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 12:34:35,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767264714] [2023-08-30 12:34:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767264714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:35,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:35,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:34:35,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657196556] [2023-08-30 12:34:35,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:35,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:34:35,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:35,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:34:35,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:34:35,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 563 [2023-08-30 12:34:35,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:35,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:35,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 563 [2023-08-30 12:34:35,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:36,247 INFO L130 PetriNetUnfolder]: 3296/5505 cut-off events. [2023-08-30 12:34:36,247 INFO L131 PetriNetUnfolder]: For 1444/1444 co-relation queries the response was YES. [2023-08-30 12:34:36,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 5505 events. 3296/5505 cut-off events. For 1444/1444 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 30353 event pairs, 837 based on Foata normal form. 27/3956 useless extension candidates. Maximal degree in co-relation 11336. Up to 4834 conditions per place. [2023-08-30 12:34:36,287 INFO L137 encePairwiseOnDemand]: 555/563 looper letters, 120 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2023-08-30 12:34:36,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 682 flow [2023-08-30 12:34:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:34:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:34:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1424 transitions. [2023-08-30 12:34:36,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058614564831261 [2023-08-30 12:34:36,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1424 transitions. [2023-08-30 12:34:36,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1424 transitions. [2023-08-30 12:34:36,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:36,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1424 transitions. [2023-08-30 12:34:36,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.8) internal successors, (1424), 5 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,301 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 304 flow. Second operand 5 states and 1424 transitions. [2023-08-30 12:34:36,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 682 flow [2023-08-30 12:34:36,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 668 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-30 12:34:36,310 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 350 flow [2023-08-30 12:34:36,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2023-08-30 12:34:36,313 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2023-08-30 12:34:36,313 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 350 flow [2023-08-30 12:34:36,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:36,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:36,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:34:36,315 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 12:34:36,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash -31274464, now seen corresponding path program 1 times [2023-08-30 12:34:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:36,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597504958] [2023-08-30 12:34:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:36,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:36,801 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 12:34:36,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:36,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597504958] [2023-08-30 12:34:36,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597504958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:36,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:34:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366726377] [2023-08-30 12:34:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:36,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:34:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:34:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:34:37,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 563 [2023-08-30 12:34:37,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 263.8) internal successors, (1319), 5 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:37,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:37,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 563 [2023-08-30 12:34:37,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:38,500 INFO L130 PetriNetUnfolder]: 3290/5496 cut-off events. [2023-08-30 12:34:38,500 INFO L131 PetriNetUnfolder]: For 1869/1869 co-relation queries the response was YES. [2023-08-30 12:34:38,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12055 conditions, 5496 events. 3290/5496 cut-off events. For 1869/1869 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 30123 event pairs, 2563 based on Foata normal form. 0/3921 useless extension candidates. Maximal degree in co-relation 11498. Up to 5244 conditions per place. [2023-08-30 12:34:38,530 INFO L137 encePairwiseOnDemand]: 554/563 looper letters, 84 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2023-08-30 12:34:38,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 550 flow [2023-08-30 12:34:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1658 transitions. [2023-08-30 12:34:38,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49082297217288334 [2023-08-30 12:34:38,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1658 transitions. [2023-08-30 12:34:38,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1658 transitions. [2023-08-30 12:34:38,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:38,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1658 transitions. [2023-08-30 12:34:38,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:38,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:38,550 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:38,550 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 350 flow. Second operand 6 states and 1658 transitions. [2023-08-30 12:34:38,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 550 flow [2023-08-30 12:34:38,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 526 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 12:34:38,556 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 366 flow [2023-08-30 12:34:38,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-08-30 12:34:38,558 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2023-08-30 12:34:38,558 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 366 flow [2023-08-30 12:34:38,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 263.8) internal successors, (1319), 5 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:38,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:38,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:38,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:34:38,561 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 12:34:38,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:38,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1157652466, now seen corresponding path program 1 times [2023-08-30 12:34:38,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:38,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841661137] [2023-08-30 12:34:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:38,610 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 12:34:38,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:38,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841661137] [2023-08-30 12:34:38,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841661137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:38,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:38,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:38,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468798980] [2023-08-30 12:34:38,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:38,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:38,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:38,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:38,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 563 [2023-08-30 12:34:38,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:38,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:38,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 563 [2023-08-30 12:34:38,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:39,543 INFO L130 PetriNetUnfolder]: 5604/9352 cut-off events. [2023-08-30 12:34:39,544 INFO L131 PetriNetUnfolder]: For 2568/2568 co-relation queries the response was YES. [2023-08-30 12:34:39,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20302 conditions, 9352 events. 5604/9352 cut-off events. For 2568/2568 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 58733 event pairs, 2548 based on Foata normal form. 0/6921 useless extension candidates. Maximal degree in co-relation 19459. Up to 5146 conditions per place. [2023-08-30 12:34:39,607 INFO L137 encePairwiseOnDemand]: 558/563 looper letters, 160 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-08-30 12:34:39,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 169 transitions, 914 flow [2023-08-30 12:34:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2023-08-30 12:34:39,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808170515097691 [2023-08-30 12:34:39,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2023-08-30 12:34:39,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2023-08-30 12:34:39,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:39,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2023-08-30 12:34:39,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:39,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:39,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:39,616 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 366 flow. Second operand 3 states and 981 transitions. [2023-08-30 12:34:39,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 169 transitions, 914 flow [2023-08-30 12:34:39,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 169 transitions, 898 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 12:34:39,626 INFO L231 Difference]: Finished difference. Result has 99 places, 98 transitions, 366 flow [2023-08-30 12:34:39,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=99, PETRI_TRANSITIONS=98} [2023-08-30 12:34:39,628 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2023-08-30 12:34:39,628 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 98 transitions, 366 flow [2023-08-30 12:34:39,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:39,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:39,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:39,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:34:39,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:39,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1521764710, now seen corresponding path program 1 times [2023-08-30 12:34:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:39,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612147443] [2023-08-30 12:34:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:39,679 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 12:34:39,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612147443] [2023-08-30 12:34:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612147443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:39,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:39,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506742112] [2023-08-30 12:34:39,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:39,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:39,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:39,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:39,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:39,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 563 [2023-08-30 12:34:39,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:39,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:39,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 563 [2023-08-30 12:34:39,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:40,367 INFO L130 PetriNetUnfolder]: 4291/7369 cut-off events. [2023-08-30 12:34:40,368 INFO L131 PetriNetUnfolder]: For 1847/1847 co-relation queries the response was YES. [2023-08-30 12:34:40,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16181 conditions, 7369 events. 4291/7369 cut-off events. For 1847/1847 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 42309 event pairs, 2314 based on Foata normal form. 0/5368 useless extension candidates. Maximal degree in co-relation 15939. Up to 4775 conditions per place. [2023-08-30 12:34:40,423 INFO L137 encePairwiseOnDemand]: 559/563 looper letters, 113 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2023-08-30 12:34:40,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 122 transitions, 635 flow [2023-08-30 12:34:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2023-08-30 12:34:40,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606867969212552 [2023-08-30 12:34:40,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2023-08-30 12:34:40,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2023-08-30 12:34:40,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:40,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2023-08-30 12:34:40,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:40,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:40,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:40,432 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 366 flow. Second operand 3 states and 947 transitions. [2023-08-30 12:34:40,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 122 transitions, 635 flow [2023-08-30 12:34:40,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 583 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-30 12:34:40,438 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 277 flow [2023-08-30 12:34:40,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2023-08-30 12:34:40,441 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2023-08-30 12:34:40,441 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 277 flow [2023-08-30 12:34:40,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:40,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:40,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:40,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:34:40,442 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 12:34:40,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:40,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1746385790, now seen corresponding path program 1 times [2023-08-30 12:34:40,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:40,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426713679] [2023-08-30 12:34:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:40,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:40,824 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 12:34:40,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426713679] [2023-08-30 12:34:40,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426713679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:40,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:40,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:34:40,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997828903] [2023-08-30 12:34:40,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:40,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:34:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:40,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:34:40,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:34:41,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 563 [2023-08-30 12:34:41,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 261.42857142857144) internal successors, (1830), 7 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:41,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:41,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 563 [2023-08-30 12:34:41,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:41,777 INFO L130 PetriNetUnfolder]: 4337/7348 cut-off events. [2023-08-30 12:34:41,778 INFO L131 PetriNetUnfolder]: For 1020/1020 co-relation queries the response was YES. [2023-08-30 12:34:41,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15749 conditions, 7348 events. 4337/7348 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 40729 event pairs, 1599 based on Foata normal form. 42/5486 useless extension candidates. Maximal degree in co-relation 15579. Up to 6505 conditions per place. [2023-08-30 12:34:41,830 INFO L137 encePairwiseOnDemand]: 555/563 looper letters, 98 selfloop transitions, 9 changer transitions 0/114 dead transitions. [2023-08-30 12:34:41,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 579 flow [2023-08-30 12:34:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:34:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:34:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1398 transitions. [2023-08-30 12:34:41,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966252220248668 [2023-08-30 12:34:41,836 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1398 transitions. [2023-08-30 12:34:41,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1398 transitions. [2023-08-30 12:34:41,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:41,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1398 transitions. [2023-08-30 12:34:41,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.6) internal successors, (1398), 5 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:41,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:41,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:41,844 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 277 flow. Second operand 5 states and 1398 transitions. [2023-08-30 12:34:41,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 579 flow [2023-08-30 12:34:41,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:41,850 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 278 flow [2023-08-30 12:34:41,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-08-30 12:34:41,851 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2023-08-30 12:34:41,851 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 278 flow [2023-08-30 12:34:41,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 261.42857142857144) internal successors, (1830), 7 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:41,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:41,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:34:41,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:41,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash -37750970, now seen corresponding path program 1 times [2023-08-30 12:34:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:41,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268221497] [2023-08-30 12:34:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:41,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:41,888 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 12:34:41,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268221497] [2023-08-30 12:34:41,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268221497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:41,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:41,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:41,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023131430] [2023-08-30 12:34:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:41,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:41,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:41,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:41,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:41,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 563 [2023-08-30 12:34:41,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:41,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:41,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 563 [2023-08-30 12:34:41,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:42,523 INFO L130 PetriNetUnfolder]: 3976/6897 cut-off events. [2023-08-30 12:34:42,524 INFO L131 PetriNetUnfolder]: For 972/980 co-relation queries the response was YES. [2023-08-30 12:34:42,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14616 conditions, 6897 events. 3976/6897 cut-off events. For 972/980 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 40292 event pairs, 417 based on Foata normal form. 4/5165 useless extension candidates. Maximal degree in co-relation 14439. Up to 5405 conditions per place. [2023-08-30 12:34:42,574 INFO L137 encePairwiseOnDemand]: 559/563 looper letters, 109 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2023-08-30 12:34:42,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 121 transitions, 601 flow [2023-08-30 12:34:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 944 transitions. [2023-08-30 12:34:42,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5589105979869745 [2023-08-30 12:34:42,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 944 transitions. [2023-08-30 12:34:42,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 944 transitions. [2023-08-30 12:34:42,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:42,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 944 transitions. [2023-08-30 12:34:42,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:42,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:42,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:42,597 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 278 flow. Second operand 3 states and 944 transitions. [2023-08-30 12:34:42,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 121 transitions, 601 flow [2023-08-30 12:34:42,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 121 transitions, 575 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 12:34:42,601 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 272 flow [2023-08-30 12:34:42,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-08-30 12:34:42,603 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2023-08-30 12:34:42,603 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 272 flow [2023-08-30 12:34:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:42,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:42,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:42,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:34:42,604 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:42,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash -37751111, now seen corresponding path program 1 times [2023-08-30 12:34:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830766886] [2023-08-30 12:34:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:42,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:42,660 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 12:34:42,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:42,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830766886] [2023-08-30 12:34:42,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830766886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:34:42,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747564339] [2023-08-30 12:34:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:42,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:42,666 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 12:34:42,670 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 12:34:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:42,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:34:42,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:34:42,910 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 12:34:42,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:34:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747564339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:42,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:34:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:34:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177348604] [2023-08-30 12:34:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:42,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:34:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:34:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:34:42,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 563 [2023-08-30 12:34:42,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:42,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:42,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 563 [2023-08-30 12:34:42,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:43,622 INFO L130 PetriNetUnfolder]: 3812/6593 cut-off events. [2023-08-30 12:34:43,622 INFO L131 PetriNetUnfolder]: For 2160/2164 co-relation queries the response was YES. [2023-08-30 12:34:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14623 conditions, 6593 events. 3812/6593 cut-off events. For 2160/2164 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 38551 event pairs, 101 based on Foata normal form. 116/5123 useless extension candidates. Maximal degree in co-relation 14467. Up to 3123 conditions per place. [2023-08-30 12:34:43,660 INFO L137 encePairwiseOnDemand]: 560/563 looper letters, 165 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2023-08-30 12:34:43,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 175 transitions, 824 flow [2023-08-30 12:34:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:34:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:34:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1283 transitions. [2023-08-30 12:34:43,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697158081705151 [2023-08-30 12:34:43,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1283 transitions. [2023-08-30 12:34:43,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1283 transitions. [2023-08-30 12:34:43,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:43,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1283 transitions. [2023-08-30 12:34:43,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.75) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:43,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 563.0) internal successors, (2815), 5 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:43,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 563.0) internal successors, (2815), 5 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:43,670 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 272 flow. Second operand 4 states and 1283 transitions. [2023-08-30 12:34:43,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 175 transitions, 824 flow [2023-08-30 12:34:43,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 175 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:43,677 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 268 flow [2023-08-30 12:34:43,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2023-08-30 12:34:43,678 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2023-08-30 12:34:43,678 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 268 flow [2023-08-30 12:34:43,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:43,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:43,678 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 12:34:43,689 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 12:34:43,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:43,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:43,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:43,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1489907772, now seen corresponding path program 1 times [2023-08-30 12:34:43,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:43,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420085957] [2023-08-30 12:34:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:43,930 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 12:34:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:43,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420085957] [2023-08-30 12:34:43,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420085957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:43,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:43,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:43,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839252387] [2023-08-30 12:34:43,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:43,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:43,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:43,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:43,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:43,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 563 [2023-08-30 12:34:43,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:43,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:43,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 563 [2023-08-30 12:34:43,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:44,524 INFO L130 PetriNetUnfolder]: 4281/7604 cut-off events. [2023-08-30 12:34:44,524 INFO L131 PetriNetUnfolder]: For 3017/3017 co-relation queries the response was YES. [2023-08-30 12:34:44,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16842 conditions, 7604 events. 4281/7604 cut-off events. For 3017/3017 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 46422 event pairs, 1887 based on Foata normal form. 0/5944 useless extension candidates. Maximal degree in co-relation 16685. Up to 6161 conditions per place. [2023-08-30 12:34:44,562 INFO L137 encePairwiseOnDemand]: 556/563 looper letters, 116 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2023-08-30 12:34:44,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 126 transitions, 622 flow [2023-08-30 12:34:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-30 12:34:44,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612788632326821 [2023-08-30 12:34:44,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-30 12:34:44,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-30 12:34:44,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:44,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-30 12:34:44,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:44,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:44,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:44,570 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 268 flow. Second operand 3 states and 948 transitions. [2023-08-30 12:34:44,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 126 transitions, 622 flow [2023-08-30 12:34:44,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 126 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:34:44,574 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 285 flow [2023-08-30 12:34:44,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-08-30 12:34:44,575 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2023-08-30 12:34:44,575 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 285 flow [2023-08-30 12:34:44,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:44,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:44,576 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 12:34:44,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:34:44,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:44,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1068716112, now seen corresponding path program 1 times [2023-08-30 12:34:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:44,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294200337] [2023-08-30 12:34:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:45,650 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 12:34:45,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294200337] [2023-08-30 12:34:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294200337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:45,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:45,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 12:34:45,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212345051] [2023-08-30 12:34:45,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:45,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:34:45,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:34:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:34:47,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 563 [2023-08-30 12:34:47,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 285 flow. Second operand has 16 states, 16 states have (on average 240.1875) internal successors, (3843), 16 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:47,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:47,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 563 [2023-08-30 12:34:47,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:48,835 INFO L130 PetriNetUnfolder]: 4531/7724 cut-off events. [2023-08-30 12:34:48,836 INFO L131 PetriNetUnfolder]: For 2544/2544 co-relation queries the response was YES. [2023-08-30 12:34:48,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18089 conditions, 7724 events. 4531/7724 cut-off events. For 2544/2544 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 42863 event pairs, 3823 based on Foata normal form. 0/6226 useless extension candidates. Maximal degree in co-relation 17933. Up to 7306 conditions per place. [2023-08-30 12:34:48,866 INFO L137 encePairwiseOnDemand]: 544/563 looper letters, 73 selfloop transitions, 32 changer transitions 1/113 dead transitions. [2023-08-30 12:34:48,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 612 flow [2023-08-30 12:34:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 12:34:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 12:34:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3925 transitions. [2023-08-30 12:34:48,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43572380106571934 [2023-08-30 12:34:48,877 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3925 transitions. [2023-08-30 12:34:48,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3925 transitions. [2023-08-30 12:34:48,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:48,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3925 transitions. [2023-08-30 12:34:48,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 245.3125) internal successors, (3925), 16 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:48,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 563.0) internal successors, (9571), 17 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:48,900 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 563.0) internal successors, (9571), 17 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:48,900 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 285 flow. Second operand 16 states and 3925 transitions. [2023-08-30 12:34:48,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 612 flow [2023-08-30 12:34:48,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:48,905 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 493 flow [2023-08-30 12:34:48,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=493, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2023-08-30 12:34:48,906 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2023-08-30 12:34:48,906 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 493 flow [2023-08-30 12:34:48,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 240.1875) internal successors, (3843), 16 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:48,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:48,908 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 12:34:48,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:34:48,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:48,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:48,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1068716073, now seen corresponding path program 1 times [2023-08-30 12:34:48,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:48,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324253065] [2023-08-30 12:34:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:48,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:49,385 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 12:34:49,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:49,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324253065] [2023-08-30 12:34:49,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324253065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:49,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:49,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 12:34:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030744860] [2023-08-30 12:34:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:49,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:34:49,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:34:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:34:50,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 563 [2023-08-30 12:34:50,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 493 flow. Second operand has 12 states, 12 states have (on average 257.5833333333333) internal successors, (3091), 12 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:50,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:50,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 563 [2023-08-30 12:34:50,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:51,666 INFO L130 PetriNetUnfolder]: 5257/9072 cut-off events. [2023-08-30 12:34:51,666 INFO L131 PetriNetUnfolder]: For 3738/3738 co-relation queries the response was YES. [2023-08-30 12:34:51,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22756 conditions, 9072 events. 5257/9072 cut-off events. For 3738/3738 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 53066 event pairs, 3782 based on Foata normal form. 0/7498 useless extension candidates. Maximal degree in co-relation 18470. Up to 6512 conditions per place. [2023-08-30 12:34:51,711 INFO L137 encePairwiseOnDemand]: 549/563 looper letters, 149 selfloop transitions, 36 changer transitions 6/198 dead transitions. [2023-08-30 12:34:51,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 198 transitions, 1254 flow [2023-08-30 12:34:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 12:34:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 12:34:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3487 transitions. [2023-08-30 12:34:51,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764312064489684 [2023-08-30 12:34:51,720 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3487 transitions. [2023-08-30 12:34:51,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3487 transitions. [2023-08-30 12:34:51,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:51,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3487 transitions. [2023-08-30 12:34:51,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 268.2307692307692) internal successors, (3487), 13 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:51,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 563.0) internal successors, (7882), 14 states have internal predecessors, (7882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:51,739 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 563.0) internal successors, (7882), 14 states have internal predecessors, (7882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:51,739 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 493 flow. Second operand 13 states and 3487 transitions. [2023-08-30 12:34:51,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 198 transitions, 1254 flow [2023-08-30 12:34:51,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 198 transitions, 1198 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-30 12:34:51,751 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 577 flow [2023-08-30 12:34:51,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=577, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2023-08-30 12:34:51,752 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 50 predicate places. [2023-08-30 12:34:51,752 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 577 flow [2023-08-30 12:34:51,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 257.5833333333333) internal successors, (3091), 12 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:51,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:51,753 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 12:34:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:34:51,754 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 12:34:51,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1097553174, now seen corresponding path program 1 times [2023-08-30 12:34:51,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892472227] [2023-08-30 12:34:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:53,201 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 12:34:53,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:53,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892472227] [2023-08-30 12:34:53,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892472227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:53,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:53,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-30 12:34:53,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020357348] [2023-08-30 12:34:53,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:53,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 12:34:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 12:34:53,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-30 12:34:55,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 563 [2023-08-30 12:34:55,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 577 flow. Second operand has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:55,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:55,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 563 [2023-08-30 12:34:55,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:58,661 INFO L130 PetriNetUnfolder]: 6057/10486 cut-off events. [2023-08-30 12:34:58,661 INFO L131 PetriNetUnfolder]: For 6117/6117 co-relation queries the response was YES. [2023-08-30 12:34:58,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28231 conditions, 10486 events. 6057/10486 cut-off events. For 6117/6117 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 62815 event pairs, 2647 based on Foata normal form. 0/8878 useless extension candidates. Maximal degree in co-relation 19078. Up to 8367 conditions per place. [2023-08-30 12:34:58,734 INFO L137 encePairwiseOnDemand]: 545/563 looper letters, 285 selfloop transitions, 53 changer transitions 3/348 dead transitions. [2023-08-30 12:34:58,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 348 transitions, 2297 flow [2023-08-30 12:34:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 12:34:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 12:34:58,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6169 transitions. [2023-08-30 12:34:58,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43829484902309057 [2023-08-30 12:34:58,751 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6169 transitions. [2023-08-30 12:34:58,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6169 transitions. [2023-08-30 12:34:58,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:58,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6169 transitions. [2023-08-30 12:34:58,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 246.76) internal successors, (6169), 25 states have internal predecessors, (6169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:58,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 563.0) internal successors, (14638), 26 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:58,786 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 563.0) internal successors, (14638), 26 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:58,786 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 577 flow. Second operand 25 states and 6169 transitions. [2023-08-30 12:34:58,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 348 transitions, 2297 flow [2023-08-30 12:34:58,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 348 transitions, 2244 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-30 12:34:58,824 INFO L231 Difference]: Finished difference. Result has 151 places, 131 transitions, 793 flow [2023-08-30 12:34:58,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=793, PETRI_PLACES=151, PETRI_TRANSITIONS=131} [2023-08-30 12:34:58,825 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 74 predicate places. [2023-08-30 12:34:58,825 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 131 transitions, 793 flow [2023-08-30 12:34:58,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:58,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:58,826 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 12:34:58,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:34:58,827 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:58,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash -746022104, now seen corresponding path program 2 times [2023-08-30 12:34:58,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:58,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976296093] [2023-08-30 12:34:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:58,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:59,909 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 12:34:59,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976296093] [2023-08-30 12:34:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976296093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:59,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:59,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-30 12:34:59,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015452203] [2023-08-30 12:34:59,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:59,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 12:34:59,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 12:34:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-30 12:35:01,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 563 [2023-08-30 12:35:01,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 131 transitions, 793 flow. Second operand has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:01,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:01,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 563 [2023-08-30 12:35:01,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:03,001 INFO L130 PetriNetUnfolder]: 6582/11392 cut-off events. [2023-08-30 12:35:03,001 INFO L131 PetriNetUnfolder]: For 6842/6842 co-relation queries the response was YES. [2023-08-30 12:35:03,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31054 conditions, 11392 events. 6582/11392 cut-off events. For 6842/6842 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 69851 event pairs, 2010 based on Foata normal form. 0/9738 useless extension candidates. Maximal degree in co-relation 24627. Up to 7146 conditions per place. [2023-08-30 12:35:03,070 INFO L137 encePairwiseOnDemand]: 544/563 looper letters, 255 selfloop transitions, 72 changer transitions 3/337 dead transitions. [2023-08-30 12:35:03,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 337 transitions, 2331 flow [2023-08-30 12:35:03,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 12:35:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 12:35:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5678 transitions. [2023-08-30 12:35:03,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43848945864545524 [2023-08-30 12:35:03,078 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5678 transitions. [2023-08-30 12:35:03,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5678 transitions. [2023-08-30 12:35:03,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:03,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5678 transitions. [2023-08-30 12:35:03,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 246.8695652173913) internal successors, (5678), 23 states have internal predecessors, (5678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:03,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 563.0) internal successors, (13512), 24 states have internal predecessors, (13512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:03,098 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 563.0) internal successors, (13512), 24 states have internal predecessors, (13512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:03,098 INFO L175 Difference]: Start difference. First operand has 151 places, 131 transitions, 793 flow. Second operand 23 states and 5678 transitions. [2023-08-30 12:35:03,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 337 transitions, 2331 flow [2023-08-30 12:35:03,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 337 transitions, 2277 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-30 12:35:03,150 INFO L231 Difference]: Finished difference. Result has 176 places, 138 transitions, 987 flow [2023-08-30 12:35:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=987, PETRI_PLACES=176, PETRI_TRANSITIONS=138} [2023-08-30 12:35:03,151 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 99 predicate places. [2023-08-30 12:35:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 138 transitions, 987 flow [2023-08-30 12:35:03,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:03,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:03,152 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 12:35:03,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 12:35:03,152 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:03,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash -746022143, now seen corresponding path program 1 times [2023-08-30 12:35:03,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:03,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876219775] [2023-08-30 12:35:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:03,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:03,681 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 12:35:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:03,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876219775] [2023-08-30 12:35:03,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876219775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:03,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:03,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:35:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023747701] [2023-08-30 12:35:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:03,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:35:03,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:35:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:35:04,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 563 [2023-08-30 12:35:04,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 138 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:04,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:04,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 563 [2023-08-30 12:35:04,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:06,248 INFO L130 PetriNetUnfolder]: 7070/12291 cut-off events. [2023-08-30 12:35:06,248 INFO L131 PetriNetUnfolder]: For 9783/9783 co-relation queries the response was YES. [2023-08-30 12:35:06,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35825 conditions, 12291 events. 7070/12291 cut-off events. For 9783/9783 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 76770 event pairs, 1985 based on Foata normal form. 0/10579 useless extension candidates. Maximal degree in co-relation 26404. Up to 6551 conditions per place. [2023-08-30 12:35:06,369 INFO L137 encePairwiseOnDemand]: 548/563 looper letters, 200 selfloop transitions, 57 changer transitions 3/267 dead transitions. [2023-08-30 12:35:06,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 267 transitions, 2082 flow [2023-08-30 12:35:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:35:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:35:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3981 transitions. [2023-08-30 12:35:06,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714031971580817 [2023-08-30 12:35:06,496 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3981 transitions. [2023-08-30 12:35:06,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3981 transitions. [2023-08-30 12:35:06,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:06,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3981 transitions. [2023-08-30 12:35:06,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 265.4) internal successors, (3981), 15 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:06,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 563.0) internal successors, (9008), 16 states have internal predecessors, (9008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:06,507 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 563.0) internal successors, (9008), 16 states have internal predecessors, (9008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:06,507 INFO L175 Difference]: Start difference. First operand has 176 places, 138 transitions, 987 flow. Second operand 15 states and 3981 transitions. [2023-08-30 12:35:06,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 267 transitions, 2082 flow [2023-08-30 12:35:06,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 267 transitions, 1966 flow, removed 11 selfloop flow, removed 14 redundant places. [2023-08-30 12:35:06,597 INFO L231 Difference]: Finished difference. Result has 180 places, 146 transitions, 1085 flow [2023-08-30 12:35:06,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1085, PETRI_PLACES=180, PETRI_TRANSITIONS=146} [2023-08-30 12:35:06,598 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 103 predicate places. [2023-08-30 12:35:06,599 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 146 transitions, 1085 flow [2023-08-30 12:35:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:06,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:06,599 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 12:35:06,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:35:06,600 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 12:35:06,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1542034382, now seen corresponding path program 3 times [2023-08-30 12:35:06,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:06,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289415487] [2023-08-30 12:35:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:07,636 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 12:35:07,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:07,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289415487] [2023-08-30 12:35:07,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289415487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:07,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:07,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-30 12:35:07,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175892363] [2023-08-30 12:35:07,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:07,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 12:35:07,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:07,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 12:35:07,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-08-30 12:35:09,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 563 [2023-08-30 12:35:09,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 146 transitions, 1085 flow. Second operand has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:09,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:09,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 563 [2023-08-30 12:35:09,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:10,772 INFO L130 PetriNetUnfolder]: 7020/12185 cut-off events. [2023-08-30 12:35:10,772 INFO L131 PetriNetUnfolder]: For 11901/11901 co-relation queries the response was YES. [2023-08-30 12:35:10,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36570 conditions, 12185 events. 7020/12185 cut-off events. For 11901/11901 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 76151 event pairs, 1902 based on Foata normal form. 0/10501 useless extension candidates. Maximal degree in co-relation 35426. Up to 6858 conditions per place. [2023-08-30 12:35:10,870 INFO L137 encePairwiseOnDemand]: 545/563 looper letters, 263 selfloop transitions, 79 changer transitions 3/352 dead transitions. [2023-08-30 12:35:10,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 352 transitions, 2657 flow [2023-08-30 12:35:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 12:35:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 12:35:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5919 transitions. [2023-08-30 12:35:10,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380550621669627 [2023-08-30 12:35:10,875 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5919 transitions. [2023-08-30 12:35:10,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5919 transitions. [2023-08-30 12:35:10,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:10,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5919 transitions. [2023-08-30 12:35:10,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 246.625) internal successors, (5919), 24 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:10,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 563.0) internal successors, (14075), 25 states have internal predecessors, (14075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:10,893 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 563.0) internal successors, (14075), 25 states have internal predecessors, (14075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:10,893 INFO L175 Difference]: Start difference. First operand has 180 places, 146 transitions, 1085 flow. Second operand 24 states and 5919 transitions. [2023-08-30 12:35:10,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 352 transitions, 2657 flow [2023-08-30 12:35:11,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 352 transitions, 2595 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-30 12:35:11,235 INFO L231 Difference]: Finished difference. Result has 198 places, 146 transitions, 1190 flow [2023-08-30 12:35:11,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1190, PETRI_PLACES=198, PETRI_TRANSITIONS=146} [2023-08-30 12:35:11,235 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 121 predicate places. [2023-08-30 12:35:11,236 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 146 transitions, 1190 flow [2023-08-30 12:35:11,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:11,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:11,236 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 12:35:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 12:35:11,237 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:11,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:11,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1229536916, now seen corresponding path program 4 times [2023-08-30 12:35:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550104924] [2023-08-30 12:35:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:11,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:12,514 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 12:35:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550104924] [2023-08-30 12:35:12,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550104924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:12,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:12,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-30 12:35:12,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580143025] [2023-08-30 12:35:12,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:12,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 12:35:12,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:12,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 12:35:12,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-30 12:35:13,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 563 [2023-08-30 12:35:13,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 146 transitions, 1190 flow. Second operand has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:13,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:13,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 563 [2023-08-30 12:35:13,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:15,861 INFO L130 PetriNetUnfolder]: 6972/12115 cut-off events. [2023-08-30 12:35:15,861 INFO L131 PetriNetUnfolder]: For 12039/12039 co-relation queries the response was YES. [2023-08-30 12:35:15,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36528 conditions, 12115 events. 6972/12115 cut-off events. For 12039/12039 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 76236 event pairs, 1587 based on Foata normal form. 0/10495 useless extension candidates. Maximal degree in co-relation 34431. Up to 6292 conditions per place. [2023-08-30 12:35:15,943 INFO L137 encePairwiseOnDemand]: 545/563 looper letters, 201 selfloop transitions, 72 changer transitions 3/283 dead transitions. [2023-08-30 12:35:15,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 283 transitions, 2327 flow [2023-08-30 12:35:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 12:35:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 12:35:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3965 transitions. [2023-08-30 12:35:15,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44016429840142096 [2023-08-30 12:35:15,947 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3965 transitions. [2023-08-30 12:35:15,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3965 transitions. [2023-08-30 12:35:15,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:15,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3965 transitions. [2023-08-30 12:35:15,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 247.8125) internal successors, (3965), 16 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 563.0) internal successors, (9571), 17 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,959 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 563.0) internal successors, (9571), 17 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,959 INFO L175 Difference]: Start difference. First operand has 198 places, 146 transitions, 1190 flow. Second operand 16 states and 3965 transitions. [2023-08-30 12:35:15,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 283 transitions, 2327 flow [2023-08-30 12:35:16,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 283 transitions, 2169 flow, removed 4 selfloop flow, removed 22 redundant places. [2023-08-30 12:35:16,044 INFO L231 Difference]: Finished difference. Result has 193 places, 149 transitions, 1222 flow [2023-08-30 12:35:16,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1222, PETRI_PLACES=193, PETRI_TRANSITIONS=149} [2023-08-30 12:35:16,044 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 116 predicate places. [2023-08-30 12:35:16,044 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 149 transitions, 1222 flow [2023-08-30 12:35:16,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.1764705882353) internal successors, (4032), 17 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:16,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:16,045 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 12:35:16,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 12:35:16,046 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:16,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:16,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1229126825, now seen corresponding path program 2 times [2023-08-30 12:35:16,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:16,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863937097] [2023-08-30 12:35:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:16,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:16,654 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 12:35:16,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:16,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863937097] [2023-08-30 12:35:16,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863937097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:16,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:16,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:35:16,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555214909] [2023-08-30 12:35:16,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:16,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:35:16,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:16,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:35:16,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:35:17,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 563 [2023-08-30 12:35:17,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 149 transitions, 1222 flow. Second operand has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:17,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:17,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 563 [2023-08-30 12:35:17,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:19,708 INFO L130 PetriNetUnfolder]: 7122/12417 cut-off events. [2023-08-30 12:35:19,708 INFO L131 PetriNetUnfolder]: For 14450/14450 co-relation queries the response was YES. [2023-08-30 12:35:19,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38523 conditions, 12417 events. 7122/12417 cut-off events. For 14450/14450 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 78458 event pairs, 1996 based on Foata normal form. 0/10797 useless extension candidates. Maximal degree in co-relation 37283. Up to 6577 conditions per place. [2023-08-30 12:35:19,796 INFO L137 encePairwiseOnDemand]: 550/563 looper letters, 184 selfloop transitions, 49 changer transitions 3/243 dead transitions. [2023-08-30 12:35:19,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 243 transitions, 2112 flow [2023-08-30 12:35:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:35:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:35:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3187 transitions. [2023-08-30 12:35:19,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47172883362936646 [2023-08-30 12:35:19,801 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3187 transitions. [2023-08-30 12:35:19,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3187 transitions. [2023-08-30 12:35:19,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:19,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3187 transitions. [2023-08-30 12:35:19,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 265.5833333333333) internal successors, (3187), 12 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,812 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,813 INFO L175 Difference]: Start difference. First operand has 193 places, 149 transitions, 1222 flow. Second operand 12 states and 3187 transitions. [2023-08-30 12:35:19,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 243 transitions, 2112 flow [2023-08-30 12:35:19,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 243 transitions, 2025 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-30 12:35:19,932 INFO L231 Difference]: Finished difference. Result has 197 places, 152 transitions, 1297 flow [2023-08-30 12:35:19,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1297, PETRI_PLACES=197, PETRI_TRANSITIONS=152} [2023-08-30 12:35:19,932 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 120 predicate places. [2023-08-30 12:35:19,933 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 152 transitions, 1297 flow [2023-08-30 12:35:19,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:19,933 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 12:35:19,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 12:35:19,933 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:19,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1229213315, now seen corresponding path program 3 times [2023-08-30 12:35:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:19,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972709699] [2023-08-30 12:35:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:19,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:20,788 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 12:35:20,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972709699] [2023-08-30 12:35:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972709699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:35:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595190407] [2023-08-30 12:35:20,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:35:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:35:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:35:22,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 563 [2023-08-30 12:35:22,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 152 transitions, 1297 flow. Second operand has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:22,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 563 [2023-08-30 12:35:22,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:23,981 INFO L130 PetriNetUnfolder]: 7072/12333 cut-off events. [2023-08-30 12:35:23,982 INFO L131 PetriNetUnfolder]: For 18372/18372 co-relation queries the response was YES. [2023-08-30 12:35:24,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39046 conditions, 12333 events. 7072/12333 cut-off events. For 18372/18372 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 77811 event pairs, 1960 based on Foata normal form. 0/10781 useless extension candidates. Maximal degree in co-relation 37905. Up to 6359 conditions per place. [2023-08-30 12:35:24,074 INFO L137 encePairwiseOnDemand]: 551/563 looper letters, 182 selfloop transitions, 49 changer transitions 3/241 dead transitions. [2023-08-30 12:35:24,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 241 transitions, 2143 flow [2023-08-30 12:35:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:35:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:35:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3184 transitions. [2023-08-30 12:35:24,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712847838957963 [2023-08-30 12:35:24,079 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3184 transitions. [2023-08-30 12:35:24,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3184 transitions. [2023-08-30 12:35:24,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:24,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3184 transitions. [2023-08-30 12:35:24,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 265.3333333333333) internal successors, (3184), 12 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:24,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:24,091 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:24,091 INFO L175 Difference]: Start difference. First operand has 197 places, 152 transitions, 1297 flow. Second operand 12 states and 3184 transitions. [2023-08-30 12:35:24,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 241 transitions, 2143 flow [2023-08-30 12:35:24,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 241 transitions, 2085 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 12:35:24,261 INFO L231 Difference]: Finished difference. Result has 201 places, 152 transitions, 1337 flow [2023-08-30 12:35:24,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1337, PETRI_PLACES=201, PETRI_TRANSITIONS=152} [2023-08-30 12:35:24,262 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 124 predicate places. [2023-08-30 12:35:24,262 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 152 transitions, 1337 flow [2023-08-30 12:35:24,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 254.53846153846155) internal successors, (3309), 13 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:24,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:24,262 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 12:35:24,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 12:35:24,263 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 12:35:24,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:24,263 INFO L85 PathProgramCache]: Analyzing trace with hash 529053456, now seen corresponding path program 1 times [2023-08-30 12:35:24,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:24,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959044618] [2023-08-30 12:35:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:24,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:24,316 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 12:35:24,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:24,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959044618] [2023-08-30 12:35:24,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959044618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:24,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:24,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:35:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705363845] [2023-08-30 12:35:24,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:24,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:24,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 563 [2023-08-30 12:35:24,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 152 transitions, 1337 flow. Second operand has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:24,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:24,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 563 [2023-08-30 12:35:24,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:25,707 INFO L130 PetriNetUnfolder]: 6236/11124 cut-off events. [2023-08-30 12:35:25,708 INFO L131 PetriNetUnfolder]: For 20668/20714 co-relation queries the response was YES. [2023-08-30 12:35:25,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36008 conditions, 11124 events. 6236/11124 cut-off events. For 20668/20714 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 71194 event pairs, 2553 based on Foata normal form. 46/9937 useless extension candidates. Maximal degree in co-relation 34871. Up to 7128 conditions per place. [2023-08-30 12:35:25,779 INFO L137 encePairwiseOnDemand]: 558/563 looper letters, 161 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2023-08-30 12:35:25,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 179 transitions, 1757 flow [2023-08-30 12:35:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 925 transitions. [2023-08-30 12:35:25,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476613380698638 [2023-08-30 12:35:25,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 925 transitions. [2023-08-30 12:35:25,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 925 transitions. [2023-08-30 12:35:25,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:25,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 925 transitions. [2023-08-30 12:35:25,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:25,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:25,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:25,784 INFO L175 Difference]: Start difference. First operand has 201 places, 152 transitions, 1337 flow. Second operand 3 states and 925 transitions. [2023-08-30 12:35:25,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 179 transitions, 1757 flow [2023-08-30 12:35:25,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 179 transitions, 1670 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-30 12:35:25,921 INFO L231 Difference]: Finished difference. Result has 193 places, 151 transitions, 1258 flow [2023-08-30 12:35:25,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1258, PETRI_PLACES=193, PETRI_TRANSITIONS=151} [2023-08-30 12:35:25,922 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 116 predicate places. [2023-08-30 12:35:25,922 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 151 transitions, 1258 flow [2023-08-30 12:35:25,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:25,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:25,922 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 12:35:25,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 12:35:25,923 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:25,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash -469876458, now seen corresponding path program 1 times [2023-08-30 12:35:25,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:25,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243630164] [2023-08-30 12:35:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243630164] [2023-08-30 12:35:26,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243630164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:26,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:26,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 12:35:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624064817] [2023-08-30 12:35:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:35:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:35:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:35:27,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 563 [2023-08-30 12:35:27,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 151 transitions, 1258 flow. Second operand has 14 states, 14 states have (on average 248.57142857142858) internal successors, (3480), 14 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:27,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:27,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 563 [2023-08-30 12:35:27,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:29,516 INFO L130 PetriNetUnfolder]: 7395/12944 cut-off events. [2023-08-30 12:35:29,516 INFO L131 PetriNetUnfolder]: For 20680/20680 co-relation queries the response was YES. [2023-08-30 12:35:29,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42571 conditions, 12944 events. 7395/12944 cut-off events. For 20680/20680 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 82584 event pairs, 5537 based on Foata normal form. 0/11830 useless extension candidates. Maximal degree in co-relation 39190. Up to 10900 conditions per place. [2023-08-30 12:35:29,595 INFO L137 encePairwiseOnDemand]: 548/563 looper letters, 193 selfloop transitions, 34 changer transitions 3/237 dead transitions. [2023-08-30 12:35:29,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 237 transitions, 2150 flow [2023-08-30 12:35:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:35:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:35:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3609 transitions. [2023-08-30 12:35:29,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578787109870591 [2023-08-30 12:35:29,598 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3609 transitions. [2023-08-30 12:35:29,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3609 transitions. [2023-08-30 12:35:29,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:29,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3609 transitions. [2023-08-30 12:35:29,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 257.7857142857143) internal successors, (3609), 14 states have internal predecessors, (3609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:29,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 563.0) internal successors, (8445), 15 states have internal predecessors, (8445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:29,606 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 563.0) internal successors, (8445), 15 states have internal predecessors, (8445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:29,606 INFO L175 Difference]: Start difference. First operand has 193 places, 151 transitions, 1258 flow. Second operand 14 states and 3609 transitions. [2023-08-30 12:35:29,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 237 transitions, 2150 flow [2023-08-30 12:35:29,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 237 transitions, 2142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:29,797 INFO L231 Difference]: Finished difference. Result has 212 places, 159 transitions, 1452 flow [2023-08-30 12:35:29,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1452, PETRI_PLACES=212, PETRI_TRANSITIONS=159} [2023-08-30 12:35:29,797 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 135 predicate places. [2023-08-30 12:35:29,797 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 159 transitions, 1452 flow [2023-08-30 12:35:29,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.57142857142858) internal successors, (3480), 14 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:29,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:29,798 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 12:35:29,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 12:35:29,798 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:29,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 529053355, now seen corresponding path program 1 times [2023-08-30 12:35:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168042602] [2023-08-30 12:35:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:29,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:29,846 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 12:35:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168042602] [2023-08-30 12:35:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168042602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740652823] [2023-08-30 12:35:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:29,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:29,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:29,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:35:29,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 12:35:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:30,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:35:30,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:30,019 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 12:35:30,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:35:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740652823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:30,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:35:30,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:35:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539509170] [2023-08-30 12:35:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:30,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:35:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:30,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:35:30,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:35:30,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 563 [2023-08-30 12:35:30,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 159 transitions, 1452 flow. Second operand has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:30,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:30,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 563 [2023-08-30 12:35:30,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:31,412 INFO L130 PetriNetUnfolder]: 6564/11843 cut-off events. [2023-08-30 12:35:31,412 INFO L131 PetriNetUnfolder]: For 22516/22565 co-relation queries the response was YES. [2023-08-30 12:35:31,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39960 conditions, 11843 events. 6564/11843 cut-off events. For 22516/22565 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 78266 event pairs, 1232 based on Foata normal form. 331/11387 useless extension candidates. Maximal degree in co-relation 38701. Up to 6542 conditions per place. [2023-08-30 12:35:31,498 INFO L137 encePairwiseOnDemand]: 559/563 looper letters, 223 selfloop transitions, 2 changer transitions 0/239 dead transitions. [2023-08-30 12:35:31,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 239 transitions, 2715 flow [2023-08-30 12:35:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:35:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:35:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1227 transitions. [2023-08-30 12:35:31,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448490230905861 [2023-08-30 12:35:31,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1227 transitions. [2023-08-30 12:35:31,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1227 transitions. [2023-08-30 12:35:31,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:31,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1227 transitions. [2023-08-30 12:35:31,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.75) internal successors, (1227), 4 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:31,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 563.0) internal successors, (2815), 5 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:31,504 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 563.0) internal successors, (2815), 5 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:31,504 INFO L175 Difference]: Start difference. First operand has 212 places, 159 transitions, 1452 flow. Second operand 4 states and 1227 transitions. [2023-08-30 12:35:31,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 239 transitions, 2715 flow [2023-08-30 12:35:31,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 239 transitions, 2661 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 12:35:31,719 INFO L231 Difference]: Finished difference. Result has 207 places, 157 transitions, 1404 flow [2023-08-30 12:35:31,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1404, PETRI_PLACES=207, PETRI_TRANSITIONS=157} [2023-08-30 12:35:31,720 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 130 predicate places. [2023-08-30 12:35:31,720 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 157 transitions, 1404 flow [2023-08-30 12:35:31,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:31,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:31,720 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 12:35:31,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 12:35:31,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 12:35:31,921 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:31,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash -469876456, now seen corresponding path program 1 times [2023-08-30 12:35:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:31,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521569188] [2023-08-30 12:35:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:31,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:32,579 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 12:35:32,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:32,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521569188] [2023-08-30 12:35:32,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521569188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:32,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:32,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 12:35:32,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589539905] [2023-08-30 12:35:32,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:32,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:35:32,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:35:32,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:35:33,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 563 [2023-08-30 12:35:33,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 157 transitions, 1404 flow. Second operand has 12 states, 12 states have (on average 242.83333333333334) internal successors, (2914), 12 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:33,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:33,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 563 [2023-08-30 12:35:33,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:35,554 INFO L130 PetriNetUnfolder]: 8504/14828 cut-off events. [2023-08-30 12:35:35,554 INFO L131 PetriNetUnfolder]: For 23817/23817 co-relation queries the response was YES. [2023-08-30 12:35:35,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48355 conditions, 14828 events. 8504/14828 cut-off events. For 23817/23817 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 96965 event pairs, 3740 based on Foata normal form. 0/13810 useless extension candidates. Maximal degree in co-relation 47121. Up to 6378 conditions per place. [2023-08-30 12:35:35,697 INFO L137 encePairwiseOnDemand]: 547/563 looper letters, 231 selfloop transitions, 66 changer transitions 6/310 dead transitions. [2023-08-30 12:35:35,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 310 transitions, 2617 flow [2023-08-30 12:35:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 12:35:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 12:35:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4310 transitions. [2023-08-30 12:35:35,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450318670985268 [2023-08-30 12:35:35,834 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4310 transitions. [2023-08-30 12:35:35,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4310 transitions. [2023-08-30 12:35:35,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:35,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4310 transitions. [2023-08-30 12:35:35,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 253.52941176470588) internal successors, (4310), 17 states have internal predecessors, (4310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:35,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:35,858 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:35,858 INFO L175 Difference]: Start difference. First operand has 207 places, 157 transitions, 1404 flow. Second operand 17 states and 4310 transitions. [2023-08-30 12:35:35,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 310 transitions, 2617 flow [2023-08-30 12:35:36,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 310 transitions, 2609 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:35:36,093 INFO L231 Difference]: Finished difference. Result has 225 places, 166 transitions, 1604 flow [2023-08-30 12:35:36,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1604, PETRI_PLACES=225, PETRI_TRANSITIONS=166} [2023-08-30 12:35:36,093 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 148 predicate places. [2023-08-30 12:35:36,094 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 166 transitions, 1604 flow [2023-08-30 12:35:36,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 242.83333333333334) internal successors, (2914), 12 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:36,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:36,094 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 12:35:36,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 12:35:36,095 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 12:35:36,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:36,095 INFO L85 PathProgramCache]: Analyzing trace with hash -136683004, now seen corresponding path program 1 times [2023-08-30 12:35:36,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:36,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595795669] [2023-08-30 12:35:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:36,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:37,271 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 12:35:37,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:37,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595795669] [2023-08-30 12:35:37,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595795669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:37,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:37,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 12:35:37,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997661118] [2023-08-30 12:35:37,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:37,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:35:37,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:37,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:35:37,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:35:38,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 563 [2023-08-30 12:35:38,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 166 transitions, 1604 flow. Second operand has 15 states, 15 states have (on average 241.53333333333333) internal successors, (3623), 15 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:38,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:38,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 563 [2023-08-30 12:35:38,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:41,046 INFO L130 PetriNetUnfolder]: 7068/12357 cut-off events. [2023-08-30 12:35:41,046 INFO L131 PetriNetUnfolder]: For 25053/25053 co-relation queries the response was YES. [2023-08-30 12:35:41,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43727 conditions, 12357 events. 7068/12357 cut-off events. For 25053/25053 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 77715 event pairs, 3540 based on Foata normal form. 68/11755 useless extension candidates. Maximal degree in co-relation 41723. Up to 6791 conditions per place. [2023-08-30 12:35:41,141 INFO L137 encePairwiseOnDemand]: 548/563 looper letters, 241 selfloop transitions, 62 changer transitions 3/313 dead transitions. [2023-08-30 12:35:41,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 313 transitions, 2830 flow [2023-08-30 12:35:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 12:35:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 12:35:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4529 transitions. [2023-08-30 12:35:41,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469113874087231 [2023-08-30 12:35:41,146 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4529 transitions. [2023-08-30 12:35:41,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4529 transitions. [2023-08-30 12:35:41,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:41,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4529 transitions. [2023-08-30 12:35:41,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 251.61111111111111) internal successors, (4529), 18 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:41,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 563.0) internal successors, (10697), 19 states have internal predecessors, (10697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:41,159 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 563.0) internal successors, (10697), 19 states have internal predecessors, (10697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:41,160 INFO L175 Difference]: Start difference. First operand has 225 places, 166 transitions, 1604 flow. Second operand 18 states and 4529 transitions. [2023-08-30 12:35:41,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 313 transitions, 2830 flow [2023-08-30 12:35:41,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 313 transitions, 2726 flow, removed 8 selfloop flow, removed 14 redundant places. [2023-08-30 12:35:41,394 INFO L231 Difference]: Finished difference. Result has 227 places, 158 transitions, 1585 flow [2023-08-30 12:35:41,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=227, PETRI_TRANSITIONS=158} [2023-08-30 12:35:41,395 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 150 predicate places. [2023-08-30 12:35:41,395 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 158 transitions, 1585 flow [2023-08-30 12:35:41,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 241.53333333333333) internal successors, (3623), 15 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:41,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:41,396 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 12:35:41,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 12:35:41,396 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 12:35:41,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash -800530184, now seen corresponding path program 2 times [2023-08-30 12:35:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:41,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396185052] [2023-08-30 12:35:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:42,315 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 12:35:42,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:42,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396185052] [2023-08-30 12:35:42,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396185052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:42,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:42,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 12:35:42,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468944721] [2023-08-30 12:35:42,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:42,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:35:42,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:35:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:35:43,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 563 [2023-08-30 12:35:43,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 158 transitions, 1585 flow. Second operand has 15 states, 15 states have (on average 241.53333333333333) internal successors, (3623), 15 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:43,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 563 [2023-08-30 12:35:43,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:46,041 INFO L130 PetriNetUnfolder]: 8688/15136 cut-off events. [2023-08-30 12:35:46,042 INFO L131 PetriNetUnfolder]: For 27447/27447 co-relation queries the response was YES. [2023-08-30 12:35:46,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51291 conditions, 15136 events. 8688/15136 cut-off events. For 27447/27447 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 98862 event pairs, 1695 based on Foata normal form. 150/14400 useless extension candidates. Maximal degree in co-relation 45161. Up to 5793 conditions per place. [2023-08-30 12:35:46,146 INFO L137 encePairwiseOnDemand]: 543/563 looper letters, 260 selfloop transitions, 80 changer transitions 0/347 dead transitions. [2023-08-30 12:35:46,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 347 transitions, 3032 flow [2023-08-30 12:35:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 12:35:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 12:35:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4321 transitions. [2023-08-30 12:35:46,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514679761780378 [2023-08-30 12:35:46,150 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4321 transitions. [2023-08-30 12:35:46,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4321 transitions. [2023-08-30 12:35:46,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:46,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4321 transitions. [2023-08-30 12:35:46,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 254.1764705882353) internal successors, (4321), 17 states have internal predecessors, (4321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:46,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:46,162 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:46,163 INFO L175 Difference]: Start difference. First operand has 227 places, 158 transitions, 1585 flow. Second operand 17 states and 4321 transitions. [2023-08-30 12:35:46,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 347 transitions, 3032 flow [2023-08-30 12:35:46,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 347 transitions, 2900 flow, removed 1 selfloop flow, removed 18 redundant places. [2023-08-30 12:35:46,413 INFO L231 Difference]: Finished difference. Result has 229 places, 169 transitions, 1751 flow [2023-08-30 12:35:46,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1751, PETRI_PLACES=229, PETRI_TRANSITIONS=169} [2023-08-30 12:35:46,414 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 152 predicate places. [2023-08-30 12:35:46,414 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 169 transitions, 1751 flow [2023-08-30 12:35:46,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 241.53333333333333) internal successors, (3623), 15 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:46,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:46,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:46,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 12:35:46,415 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 12:35:46,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash -222927654, now seen corresponding path program 1 times [2023-08-30 12:35:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:46,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798263872] [2023-08-30 12:35:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:46,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:47,075 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 12:35:47,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:47,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798263872] [2023-08-30 12:35:47,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798263872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:47,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:47,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:35:47,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636466767] [2023-08-30 12:35:47,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:47,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:35:47,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:35:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:35:48,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 563 [2023-08-30 12:35:48,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 169 transitions, 1751 flow. Second operand has 13 states, 13 states have (on average 239.76923076923077) internal successors, (3117), 13 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:48,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:48,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 563 [2023-08-30 12:35:48,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:50,921 INFO L130 PetriNetUnfolder]: 9831/17237 cut-off events. [2023-08-30 12:35:50,921 INFO L131 PetriNetUnfolder]: For 37082/37082 co-relation queries the response was YES. [2023-08-30 12:35:50,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59781 conditions, 17237 events. 9831/17237 cut-off events. For 37082/37082 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 116453 event pairs, 1683 based on Foata normal form. 184/16321 useless extension candidates. Maximal degree in co-relation 57748. Up to 5049 conditions per place. [2023-08-30 12:35:51,038 INFO L137 encePairwiseOnDemand]: 548/563 looper letters, 242 selfloop transitions, 71 changer transitions 3/323 dead transitions. [2023-08-30 12:35:51,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 323 transitions, 3021 flow [2023-08-30 12:35:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:35:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:35:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3532 transitions. [2023-08-30 12:35:51,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481096168485156 [2023-08-30 12:35:51,041 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3532 transitions. [2023-08-30 12:35:51,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3532 transitions. [2023-08-30 12:35:51,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:51,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3532 transitions. [2023-08-30 12:35:51,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 252.28571428571428) internal successors, (3532), 14 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:51,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 563.0) internal successors, (8445), 15 states have internal predecessors, (8445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:51,057 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 563.0) internal successors, (8445), 15 states have internal predecessors, (8445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:51,057 INFO L175 Difference]: Start difference. First operand has 229 places, 169 transitions, 1751 flow. Second operand 14 states and 3532 transitions. [2023-08-30 12:35:51,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 323 transitions, 3021 flow [2023-08-30 12:35:51,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 323 transitions, 2925 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-08-30 12:35:51,355 INFO L231 Difference]: Finished difference. Result has 234 places, 179 transitions, 1909 flow [2023-08-30 12:35:51,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1909, PETRI_PLACES=234, PETRI_TRANSITIONS=179} [2023-08-30 12:35:51,355 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 157 predicate places. [2023-08-30 12:35:51,355 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 179 transitions, 1909 flow [2023-08-30 12:35:51,356 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 12:35:51,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:51,356 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 12:35:51,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 12:35:51,356 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 12:35:51,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:51,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1652168070, now seen corresponding path program 3 times [2023-08-30 12:35:51,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:51,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115721106] [2023-08-30 12:35:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:51,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:52,390 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 12:35:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115721106] [2023-08-30 12:35:52,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115721106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:52,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:52,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 12:35:52,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932998259] [2023-08-30 12:35:52,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:52,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:35:52,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:35:52,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:35:53,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 563 [2023-08-30 12:35:53,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 179 transitions, 1909 flow. Second operand has 15 states, 15 states have (on average 245.53333333333333) internal successors, (3683), 15 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:53,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:53,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 563 [2023-08-30 12:35:53,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:55,366 INFO L130 PetriNetUnfolder]: 7252/12775 cut-off events. [2023-08-30 12:35:55,366 INFO L131 PetriNetUnfolder]: For 36498/36498 co-relation queries the response was YES. [2023-08-30 12:35:55,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48214 conditions, 12775 events. 7252/12775 cut-off events. For 36498/36498 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 81141 event pairs, 1707 based on Foata normal form. 136/12247 useless extension candidates. Maximal degree in co-relation 46992. Up to 4832 conditions per place. [2023-08-30 12:35:55,482 INFO L137 encePairwiseOnDemand]: 549/563 looper letters, 191 selfloop transitions, 58 changer transitions 3/259 dead transitions. [2023-08-30 12:35:55,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 259 transitions, 2677 flow [2023-08-30 12:35:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:35:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:35:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3082 transitions. [2023-08-30 12:35:55,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561870929544109 [2023-08-30 12:35:55,485 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3082 transitions. [2023-08-30 12:35:55,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3082 transitions. [2023-08-30 12:35:55,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:55,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3082 transitions. [2023-08-30 12:35:55,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 256.8333333333333) internal successors, (3082), 12 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:55,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:55,658 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:55,658 INFO L175 Difference]: Start difference. First operand has 234 places, 179 transitions, 1909 flow. Second operand 12 states and 3082 transitions. [2023-08-30 12:35:55,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 259 transitions, 2677 flow [2023-08-30 12:35:55,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 259 transitions, 2473 flow, removed 12 selfloop flow, removed 18 redundant places. [2023-08-30 12:35:55,985 INFO L231 Difference]: Finished difference. Result has 226 places, 161 transitions, 1682 flow [2023-08-30 12:35:55,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1682, PETRI_PLACES=226, PETRI_TRANSITIONS=161} [2023-08-30 12:35:55,985 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 149 predicate places. [2023-08-30 12:35:55,985 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 161 transitions, 1682 flow [2023-08-30 12:35:55,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 245.53333333333333) internal successors, (3683), 15 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:55,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:55,986 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 12:35:55,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 12:35:55,986 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:55,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1016470593, now seen corresponding path program 1 times [2023-08-30 12:35:55,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:55,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670536078] [2023-08-30 12:35:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:55,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:56,043 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 12:35:56,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670536078] [2023-08-30 12:35:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670536078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:56,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:35:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102465123] [2023-08-30 12:35:56,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:56,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:56,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:56,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 563 [2023-08-30 12:35:56,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 161 transitions, 1682 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:56,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:56,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 563 [2023-08-30 12:35:56,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:57,158 INFO L130 PetriNetUnfolder]: 5057/9210 cut-off events. [2023-08-30 12:35:57,158 INFO L131 PetriNetUnfolder]: For 32867/32897 co-relation queries the response was YES. [2023-08-30 12:35:57,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36719 conditions, 9210 events. 5057/9210 cut-off events. For 32867/32897 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 59866 event pairs, 3775 based on Foata normal form. 112/9150 useless extension candidates. Maximal degree in co-relation 32624. Up to 7247 conditions per place. [2023-08-30 12:35:57,222 INFO L137 encePairwiseOnDemand]: 560/563 looper letters, 160 selfloop transitions, 2 changer transitions 3/176 dead transitions. [2023-08-30 12:35:57,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 176 transitions, 2079 flow [2023-08-30 12:35:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-30 12:35:57,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5429248075784487 [2023-08-30 12:35:57,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-30 12:35:57,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-30 12:35:57,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:57,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-30 12:35:57,224 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 12:35:57,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:57,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:57,225 INFO L175 Difference]: Start difference. First operand has 226 places, 161 transitions, 1682 flow. Second operand 3 states and 917 transitions. [2023-08-30 12:35:57,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 176 transitions, 2079 flow [2023-08-30 12:35:57,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 176 transitions, 1943 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-08-30 12:35:57,492 INFO L231 Difference]: Finished difference. Result has 216 places, 160 transitions, 1550 flow [2023-08-30 12:35:57,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1550, PETRI_PLACES=216, PETRI_TRANSITIONS=160} [2023-08-30 12:35:57,492 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 139 predicate places. [2023-08-30 12:35:57,493 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 160 transitions, 1550 flow [2023-08-30 12:35:57,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:57,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:57,493 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 12:35:57,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 12:35:57,494 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:57,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash -193922603, now seen corresponding path program 1 times [2023-08-30 12:35:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:57,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121956454] [2023-08-30 12:35:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:57,563 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 12:35:57,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:57,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121956454] [2023-08-30 12:35:57,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121956454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:57,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:57,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:35:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250030852] [2023-08-30 12:35:57,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:57,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:57,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 563 [2023-08-30 12:35:57,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 160 transitions, 1550 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:57,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:57,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 563 [2023-08-30 12:35:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:58,210 INFO L130 PetriNetUnfolder]: 3187/6094 cut-off events. [2023-08-30 12:35:58,210 INFO L131 PetriNetUnfolder]: For 18034/18040 co-relation queries the response was YES. [2023-08-30 12:35:58,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23964 conditions, 6094 events. 3187/6094 cut-off events. For 18034/18040 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 37630 event pairs, 841 based on Foata normal form. 616/6572 useless extension candidates. Maximal degree in co-relation 22767. Up to 4446 conditions per place. [2023-08-30 12:35:58,256 INFO L137 encePairwiseOnDemand]: 557/563 looper letters, 152 selfloop transitions, 9 changer transitions 1/173 dead transitions. [2023-08-30 12:35:58,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 173 transitions, 1947 flow [2023-08-30 12:35:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2023-08-30 12:35:58,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53700414446418 [2023-08-30 12:35:58,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2023-08-30 12:35:58,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2023-08-30 12:35:58,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:58,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2023-08-30 12:35:58,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:58,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:58,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:58,259 INFO L175 Difference]: Start difference. First operand has 216 places, 160 transitions, 1550 flow. Second operand 3 states and 907 transitions. [2023-08-30 12:35:58,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 173 transitions, 1947 flow [2023-08-30 12:35:58,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 173 transitions, 1943 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:35:58,378 INFO L231 Difference]: Finished difference. Result has 216 places, 159 transitions, 1562 flow [2023-08-30 12:35:58,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1562, PETRI_PLACES=216, PETRI_TRANSITIONS=159} [2023-08-30 12:35:58,379 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 139 predicate places. [2023-08-30 12:35:58,379 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 159 transitions, 1562 flow [2023-08-30 12:35:58,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:58,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:58,380 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 12:35:58,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 12:35:58,380 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:58,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:58,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1398243672, now seen corresponding path program 1 times [2023-08-30 12:35:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:58,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70441096] [2023-08-30 12:35:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:58,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:59,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:59,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70441096] [2023-08-30 12:35:59,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70441096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:59,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:59,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 12:35:59,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627636329] [2023-08-30 12:35:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:59,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:35:59,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:59,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:35:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:36:00,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 563 [2023-08-30 12:36:00,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 159 transitions, 1562 flow. Second operand has 16 states, 16 states have (on average 246.0) internal successors, (3936), 16 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:00,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:00,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 563 [2023-08-30 12:36:00,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:02,700 INFO L130 PetriNetUnfolder]: 4755/9144 cut-off events. [2023-08-30 12:36:02,700 INFO L131 PetriNetUnfolder]: For 22883/22889 co-relation queries the response was YES. [2023-08-30 12:36:02,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33826 conditions, 9144 events. 4755/9144 cut-off events. For 22883/22889 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 61664 event pairs, 2161 based on Foata normal form. 0/8881 useless extension candidates. Maximal degree in co-relation 30610. Up to 2657 conditions per place. [2023-08-30 12:36:02,768 INFO L137 encePairwiseOnDemand]: 544/563 looper letters, 284 selfloop transitions, 68 changer transitions 10/368 dead transitions. [2023-08-30 12:36:02,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 368 transitions, 3267 flow [2023-08-30 12:36:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 12:36:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 12:36:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 7103 transitions. [2023-08-30 12:36:02,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058360822126364 [2023-08-30 12:36:02,772 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 7103 transitions. [2023-08-30 12:36:02,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 7103 transitions. [2023-08-30 12:36:02,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:02,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 7103 transitions. [2023-08-30 12:36:02,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 253.67857142857142) internal successors, (7103), 28 states have internal predecessors, (7103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:02,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 563.0) internal successors, (16327), 29 states have internal predecessors, (16327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:02,788 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 563.0) internal successors, (16327), 29 states have internal predecessors, (16327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:02,788 INFO L175 Difference]: Start difference. First operand has 216 places, 159 transitions, 1562 flow. Second operand 28 states and 7103 transitions. [2023-08-30 12:36:02,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 368 transitions, 3267 flow [2023-08-30 12:36:02,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 368 transitions, 3237 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:36:02,930 INFO L231 Difference]: Finished difference. Result has 249 places, 174 transitions, 1881 flow [2023-08-30 12:36:02,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1881, PETRI_PLACES=249, PETRI_TRANSITIONS=174} [2023-08-30 12:36:02,930 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 172 predicate places. [2023-08-30 12:36:02,931 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 174 transitions, 1881 flow [2023-08-30 12:36:02,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 246.0) internal successors, (3936), 16 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:02,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:02,931 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 12:36:02,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 12:36:02,932 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 12:36:02,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:02,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1778907738, now seen corresponding path program 1 times [2023-08-30 12:36:02,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:02,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186618478] [2023-08-30 12:36:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:02,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:03,393 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 12:36:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186618478] [2023-08-30 12:36:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186618478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:03,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:03,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 12:36:03,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760251369] [2023-08-30 12:36:03,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:03,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:36:03,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:36:03,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:36:04,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 563 [2023-08-30 12:36:04,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 174 transitions, 1881 flow. Second operand has 12 states, 12 states have (on average 254.66666666666666) internal successors, (3056), 12 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:04,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:04,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 563 [2023-08-30 12:36:04,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:05,478 INFO L130 PetriNetUnfolder]: 5182/10024 cut-off events. [2023-08-30 12:36:05,478 INFO L131 PetriNetUnfolder]: For 26769/26769 co-relation queries the response was YES. [2023-08-30 12:36:05,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37190 conditions, 10024 events. 5182/10024 cut-off events. For 26769/26769 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 68731 event pairs, 1621 based on Foata normal form. 0/9807 useless extension candidates. Maximal degree in co-relation 35719. Up to 3622 conditions per place. [2023-08-30 12:36:05,579 INFO L137 encePairwiseOnDemand]: 550/563 looper letters, 185 selfloop transitions, 61 changer transitions 0/252 dead transitions. [2023-08-30 12:36:05,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 252 transitions, 2720 flow [2023-08-30 12:36:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 12:36:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 12:36:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2660 transitions. [2023-08-30 12:36:05,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724689165186501 [2023-08-30 12:36:05,581 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2660 transitions. [2023-08-30 12:36:05,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2660 transitions. [2023-08-30 12:36:05,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:05,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2660 transitions. [2023-08-30 12:36:05,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:05,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 563.0) internal successors, (6193), 11 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:05,585 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 563.0) internal successors, (6193), 11 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:05,585 INFO L175 Difference]: Start difference. First operand has 249 places, 174 transitions, 1881 flow. Second operand 10 states and 2660 transitions. [2023-08-30 12:36:05,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 252 transitions, 2720 flow [2023-08-30 12:36:05,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 252 transitions, 2626 flow, removed 8 selfloop flow, removed 16 redundant places. [2023-08-30 12:36:05,768 INFO L231 Difference]: Finished difference. Result has 245 places, 178 transitions, 2002 flow [2023-08-30 12:36:05,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=245, PETRI_TRANSITIONS=178} [2023-08-30 12:36:05,768 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 168 predicate places. [2023-08-30 12:36:05,768 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 178 transitions, 2002 flow [2023-08-30 12:36:05,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 254.66666666666666) internal successors, (3056), 12 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:05,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:05,769 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 12:36:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 12:36:05,769 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 12:36:05,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1104735468, now seen corresponding path program 2 times [2023-08-30 12:36:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:05,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001037594] [2023-08-30 12:36:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:05,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:06,677 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 12:36:06,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:06,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001037594] [2023-08-30 12:36:06,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001037594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:06,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:06,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-30 12:36:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233544154] [2023-08-30 12:36:06,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:06,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 12:36:06,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 12:36:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-08-30 12:36:09,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 563 [2023-08-30 12:36:09,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 178 transitions, 2002 flow. Second operand has 17 states, 17 states have (on average 242.88235294117646) internal successors, (4129), 17 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:09,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:09,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 563 [2023-08-30 12:36:09,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:11,557 INFO L130 PetriNetUnfolder]: 5391/10411 cut-off events. [2023-08-30 12:36:11,558 INFO L131 PetriNetUnfolder]: For 28863/28879 co-relation queries the response was YES. [2023-08-30 12:36:11,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38991 conditions, 10411 events. 5391/10411 cut-off events. For 28863/28879 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 69218 event pairs, 1176 based on Foata normal form. 60/10243 useless extension candidates. Maximal degree in co-relation 38602. Up to 4433 conditions per place. [2023-08-30 12:36:11,686 INFO L137 encePairwiseOnDemand]: 546/563 looper letters, 195 selfloop transitions, 87 changer transitions 7/295 dead transitions. [2023-08-30 12:36:11,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 295 transitions, 3098 flow [2023-08-30 12:36:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 12:36:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 12:36:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4273 transitions. [2023-08-30 12:36:11,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4464528262459513 [2023-08-30 12:36:11,690 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4273 transitions. [2023-08-30 12:36:11,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4273 transitions. [2023-08-30 12:36:11,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:11,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4273 transitions. [2023-08-30 12:36:11,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.35294117647058) internal successors, (4273), 17 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:11,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:11,699 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 563.0) internal successors, (10134), 18 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:11,699 INFO L175 Difference]: Start difference. First operand has 245 places, 178 transitions, 2002 flow. Second operand 17 states and 4273 transitions. [2023-08-30 12:36:11,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 295 transitions, 3098 flow [2023-08-30 12:36:11,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 295 transitions, 3026 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 12:36:11,946 INFO L231 Difference]: Finished difference. Result has 260 places, 182 transitions, 2196 flow [2023-08-30 12:36:11,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2196, PETRI_PLACES=260, PETRI_TRANSITIONS=182} [2023-08-30 12:36:11,947 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 183 predicate places. [2023-08-30 12:36:11,947 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 182 transitions, 2196 flow [2023-08-30 12:36:11,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 242.88235294117646) internal successors, (4129), 17 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:11,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:11,948 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 12:36:11,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 12:36:11,948 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:11,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash -61125312, now seen corresponding path program 2 times [2023-08-30 12:36:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354321200] [2023-08-30 12:36:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:12,437 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 12:36:12,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:12,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354321200] [2023-08-30 12:36:12,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354321200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:12,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:12,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:36:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202840906] [2023-08-30 12:36:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:12,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:36:12,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:36:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:36:13,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 563 [2023-08-30 12:36:13,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 182 transitions, 2196 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:13,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:13,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 563 [2023-08-30 12:36:13,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:14,937 INFO L130 PetriNetUnfolder]: 5381/10429 cut-off events. [2023-08-30 12:36:14,937 INFO L131 PetriNetUnfolder]: For 29716/29716 co-relation queries the response was YES. [2023-08-30 12:36:15,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40153 conditions, 10429 events. 5381/10429 cut-off events. For 29716/29716 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 69774 event pairs, 2017 based on Foata normal form. 20/10229 useless extension candidates. Maximal degree in co-relation 39730. Up to 5452 conditions per place. [2023-08-30 12:36:15,069 INFO L137 encePairwiseOnDemand]: 551/563 looper letters, 154 selfloop transitions, 59 changer transitions 1/220 dead transitions. [2023-08-30 12:36:15,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 220 transitions, 2796 flow [2023-08-30 12:36:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:36:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:36:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2088 transitions. [2023-08-30 12:36:15,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635879218472469 [2023-08-30 12:36:15,072 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2088 transitions. [2023-08-30 12:36:15,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2088 transitions. [2023-08-30 12:36:15,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:15,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2088 transitions. [2023-08-30 12:36:15,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 261.0) internal successors, (2088), 8 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:15,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 563.0) internal successors, (5067), 9 states have internal predecessors, (5067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:15,077 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 563.0) internal successors, (5067), 9 states have internal predecessors, (5067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:15,077 INFO L175 Difference]: Start difference. First operand has 260 places, 182 transitions, 2196 flow. Second operand 8 states and 2088 transitions. [2023-08-30 12:36:15,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 220 transitions, 2796 flow [2023-08-30 12:36:15,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 220 transitions, 2644 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-08-30 12:36:15,330 INFO L231 Difference]: Finished difference. Result has 254 places, 181 transitions, 2158 flow [2023-08-30 12:36:15,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2158, PETRI_PLACES=254, PETRI_TRANSITIONS=181} [2023-08-30 12:36:15,330 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 177 predicate places. [2023-08-30 12:36:15,330 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 181 transitions, 2158 flow [2023-08-30 12:36:15,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:15,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:15,331 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 12:36:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 12:36:15,331 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:15,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1517829843, now seen corresponding path program 1 times [2023-08-30 12:36:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248686286] [2023-08-30 12:36:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:16,788 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 12:36:16,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248686286] [2023-08-30 12:36:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248686286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:16,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:16,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-08-30 12:36:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901098465] [2023-08-30 12:36:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:16,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 12:36:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 12:36:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-08-30 12:36:18,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 563 [2023-08-30 12:36:18,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 181 transitions, 2158 flow. Second operand has 18 states, 18 states have (on average 242.94444444444446) internal successors, (4373), 18 states have internal predecessors, (4373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:18,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:18,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 563 [2023-08-30 12:36:18,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:20,516 INFO L130 PetriNetUnfolder]: 5818/11237 cut-off events. [2023-08-30 12:36:20,516 INFO L131 PetriNetUnfolder]: For 35610/35620 co-relation queries the response was YES. [2023-08-30 12:36:20,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42711 conditions, 11237 events. 5818/11237 cut-off events. For 35610/35620 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 76222 event pairs, 2762 based on Foata normal form. 0/11015 useless extension candidates. Maximal degree in co-relation 42298. Up to 5276 conditions per place. [2023-08-30 12:36:20,639 INFO L137 encePairwiseOnDemand]: 545/563 looper letters, 202 selfloop transitions, 59 changer transitions 15/282 dead transitions. [2023-08-30 12:36:20,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 282 transitions, 3181 flow [2023-08-30 12:36:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 12:36:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 12:36:20,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3293 transitions. [2023-08-30 12:36:20,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499248531220112 [2023-08-30 12:36:20,642 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3293 transitions. [2023-08-30 12:36:20,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3293 transitions. [2023-08-30 12:36:20,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:20,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3293 transitions. [2023-08-30 12:36:20,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 253.30769230769232) internal successors, (3293), 13 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:20,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 563.0) internal successors, (7882), 14 states have internal predecessors, (7882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:20,648 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 563.0) internal successors, (7882), 14 states have internal predecessors, (7882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:20,648 INFO L175 Difference]: Start difference. First operand has 254 places, 181 transitions, 2158 flow. Second operand 13 states and 3293 transitions. [2023-08-30 12:36:20,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 282 transitions, 3181 flow [2023-08-30 12:36:20,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 282 transitions, 3039 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-30 12:36:20,900 INFO L231 Difference]: Finished difference. Result has 261 places, 184 transitions, 2192 flow [2023-08-30 12:36:20,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2192, PETRI_PLACES=261, PETRI_TRANSITIONS=184} [2023-08-30 12:36:20,901 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 184 predicate places. [2023-08-30 12:36:20,901 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 184 transitions, 2192 flow [2023-08-30 12:36:20,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 242.94444444444446) internal successors, (4373), 18 states have internal predecessors, (4373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:20,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:20,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:36:20,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 12:36:20,902 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:20,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1117551177, now seen corresponding path program 2 times [2023-08-30 12:36:20,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149965928] [2023-08-30 12:36:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15