./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:53:57,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:53:57,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:53:57,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:53:57,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:53:57,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:53:57,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:53:57,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:53:57,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:53:57,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:53:57,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:53:57,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:53:57,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:53:57,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:53:57,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:53:57,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:53:57,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:53:57,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:53:57,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:53:57,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:53:57,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:53:57,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:53:57,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:53:57,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:53:57,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:53:57,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:53:57,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:53:57,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:53:57,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:53:57,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:53:57,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:53:57,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:53:57,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:53:57,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:53:57,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:53:57,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:53:57,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:53:57,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:53:57,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:53:57,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:53:57,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:53:57,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:53:57,482 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:53:57,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:53:57,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:53:57,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:53:57,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:53:57,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:53:57,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:53:57,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:53:57,485 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:53:57,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:53:57,485 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:53:57,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:53:57,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:53:57,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:53:57,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:53:57,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:53:57,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:53:57,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:53:57,487 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:53:57,487 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:53:57,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:53:57,487 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:53:57,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:53:57,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:53:57,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:53:57,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:53:57,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:53:57,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:53:57,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:53:57,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:53:57,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:53:57,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:53:57,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:53:57,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:53:57,489 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:53:57,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:53:57,489 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:53:57,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:53:57,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:53:57,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:53:57,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:53:57,757 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:53:57,757 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:53:57,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-30 09:53:58,703 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:53:58,951 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:53:58,951 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-30 09:53:58,964 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32eeebf78/7ec7a34d2d004341bc365be617396011/FLAG7b7c654c6 [2023-08-30 09:53:58,975 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32eeebf78/7ec7a34d2d004341bc365be617396011 [2023-08-30 09:53:58,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:53:58,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:53:58,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:53:58,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:53:58,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:53:58,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:53:58" (1/1) ... [2023-08-30 09:53:58,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38124991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:58, skipping insertion in model container [2023-08-30 09:53:58,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:53:58" (1/1) ... [2023-08-30 09:53:58,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:53:59,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:53:59,320 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2023-08-30 09:53:59,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:53:59,355 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:53:59,387 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2023-08-30 09:53:59,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:53:59,466 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:53:59,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59 WrapperNode [2023-08-30 09:53:59,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:53:59,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:53:59,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:53:59,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:53:59,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,510 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-08-30 09:53:59,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:53:59,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:53:59,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:53:59,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:53:59,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,535 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:53:59,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:53:59,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:53:59,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:53:59,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (1/1) ... [2023-08-30 09:53:59,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:53:59,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:53:59,570 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 09:53:59,576 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 09:53:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:53:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:53:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:53:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:53:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:53:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:53:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 09:53:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 09:53:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:53:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:53:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:53:59,597 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 09:53:59,740 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:53:59,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:53:59,923 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:53:59,928 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:53:59,928 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 09:53:59,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:53:59 BoogieIcfgContainer [2023-08-30 09:53:59,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:53:59,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:53:59,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:53:59,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:53:59,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:53:58" (1/3) ... [2023-08-30 09:53:59,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f51195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:53:59, skipping insertion in model container [2023-08-30 09:53:59,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:53:59" (2/3) ... [2023-08-30 09:53:59,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f51195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:53:59, skipping insertion in model container [2023-08-30 09:53:59,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:53:59" (3/3) ... [2023-08-30 09:53:59,934 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-08-30 09:53:59,942 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:53:59,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:53:59,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 09:53:59,949 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:54:00,021 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 09:54:00,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 134 transitions, 276 flow [2023-08-30 09:54:00,090 INFO L130 PetriNetUnfolder]: 23/175 cut-off events. [2023-08-30 09:54:00,091 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:54:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 23/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 403 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 09:54:00,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 134 transitions, 276 flow [2023-08-30 09:54:00,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 131 transitions, 270 flow [2023-08-30 09:54:00,102 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:00,108 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 131 transitions, 270 flow [2023-08-30 09:54:00,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 131 transitions, 270 flow [2023-08-30 09:54:00,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 131 transitions, 270 flow [2023-08-30 09:54:00,130 INFO L130 PetriNetUnfolder]: 22/172 cut-off events. [2023-08-30 09:54:00,130 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:54:00,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 172 events. 22/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 401 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 09:54:00,132 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-08-30 09:54:02,999 INFO L134 LiptonReduction]: Checked pairs total: 5957 [2023-08-30 09:54:02,999 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-30 09:54:03,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:54:03,011 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;@3e02ce99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:03,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 09:54:03,016 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 09:54:03,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:03,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:03,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 09:54:03,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:54:03,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash 16002939, now seen corresponding path program 1 times [2023-08-30 09:54:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39779238] [2023-08-30 09:54:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:03,243 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 09:54:03,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:03,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39779238] [2023-08-30 09:54:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39779238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:03,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:03,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502263724] [2023-08-30 09:54:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:03,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:03,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:03,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:03,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-30 09:54:03,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:03,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-30 09:54:03,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:03,378 INFO L130 PetriNetUnfolder]: 145/320 cut-off events. [2023-08-30 09:54:03,378 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:54:03,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 320 events. 145/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1629 event pairs, 0 based on Foata normal form. 25/244 useless extension candidates. Maximal degree in co-relation 601. Up to 292 conditions per place. [2023-08-30 09:54:03,381 INFO L137 encePairwiseOnDemand]: 240/255 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 09:54:03,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 180 flow [2023-08-30 09:54:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:03,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-08-30 09:54:03,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534640522875817 [2023-08-30 09:54:03,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-08-30 09:54:03,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-08-30 09:54:03,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:03,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-08-30 09:54:03,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,410 INFO L175 Difference]: Start difference. First operand has 35 places, 42 transitions, 92 flow. Second operand 3 states and 409 transitions. [2023-08-30 09:54:03,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 180 flow [2023-08-30 09:54:03,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:54:03,414 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 80 flow [2023-08-30 09:54:03,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-30 09:54:03,419 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-30 09:54:03,419 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 80 flow [2023-08-30 09:54:03,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:03,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:54:03,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:54:03,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:54:03,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1801032000, now seen corresponding path program 1 times [2023-08-30 09:54:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:03,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580903402] [2023-08-30 09:54:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:03,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:03,509 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 09:54:03,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:03,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580903402] [2023-08-30 09:54:03,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580903402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:03,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:03,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:03,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33665558] [2023-08-30 09:54:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:03,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:03,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:03,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 09:54:03,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:03,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 09:54:03,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:03,568 INFO L130 PetriNetUnfolder]: 118/256 cut-off events. [2023-08-30 09:54:03,568 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 09:54:03,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 256 events. 118/256 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 964 event pairs, 27 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 539. Up to 195 conditions per place. [2023-08-30 09:54:03,570 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 36 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 09:54:03,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 181 flow [2023-08-30 09:54:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-30 09:54:03,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124183006535947 [2023-08-30 09:54:03,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-30 09:54:03,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-30 09:54:03,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:03,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-30 09:54:03,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,574 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 80 flow. Second operand 3 states and 392 transitions. [2023-08-30 09:54:03,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 181 flow [2023-08-30 09:54:03,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:03,576 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 80 flow [2023-08-30 09:54:03,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 09:54:03,576 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 09:54:03,576 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 80 flow [2023-08-30 09:54:03,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:03,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:03,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:54:03,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:54:03,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1814146304, now seen corresponding path program 1 times [2023-08-30 09:54:03,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:03,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705028457] [2023-08-30 09:54:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:03,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:03,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705028457] [2023-08-30 09:54:03,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705028457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:03,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:03,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:54:03,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017638362] [2023-08-30 09:54:03,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:03,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:54:03,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:54:03,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:54:03,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 09:54:03,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:03,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 09:54:03,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:03,704 INFO L130 PetriNetUnfolder]: 106/232 cut-off events. [2023-08-30 09:54:03,705 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 09:54:03,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 232 events. 106/232 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 862 event pairs, 23 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 504. Up to 95 conditions per place. [2023-08-30 09:54:03,706 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 43 selfloop transitions, 3 changer transitions 3/51 dead transitions. [2023-08-30 09:54:03,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 51 transitions, 234 flow [2023-08-30 09:54:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:54:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:54:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 518 transitions. [2023-08-30 09:54:03,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2023-08-30 09:54:03,708 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 518 transitions. [2023-08-30 09:54:03,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 518 transitions. [2023-08-30 09:54:03,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:03,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 518 transitions. [2023-08-30 09:54:03,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,712 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 80 flow. Second operand 4 states and 518 transitions. [2023-08-30 09:54:03,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 51 transitions, 234 flow [2023-08-30 09:54:03,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:03,714 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 80 flow [2023-08-30 09:54:03,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-30 09:54:03,715 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 09:54:03,716 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 80 flow [2023-08-30 09:54:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:03,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:54:03,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:54:03,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1814146287, now seen corresponding path program 1 times [2023-08-30 09:54:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:03,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518242078] [2023-08-30 09:54:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:03,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:03,811 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 09:54:03,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:03,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518242078] [2023-08-30 09:54:03,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518242078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:03,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:03,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:54:03,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998287057] [2023-08-30 09:54:03,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:03,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:54:03,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:54:03,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:54:03,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 09:54:03,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:03,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 09:54:03,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:03,878 INFO L130 PetriNetUnfolder]: 94/208 cut-off events. [2023-08-30 09:54:03,880 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 09:54:03,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 208 events. 94/208 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 741 event pairs, 22 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 464. Up to 76 conditions per place. [2023-08-30 09:54:03,881 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 38 selfloop transitions, 3 changer transitions 8/50 dead transitions. [2023-08-30 09:54:03,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 232 flow [2023-08-30 09:54:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:54:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:54:03,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions. [2023-08-30 09:54:03,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068627450980392 [2023-08-30 09:54:03,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions. [2023-08-30 09:54:03,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions. [2023-08-30 09:54:03,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:03,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions. [2023-08-30 09:54:03,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,890 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 80 flow. Second operand 4 states and 517 transitions. [2023-08-30 09:54:03,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 232 flow [2023-08-30 09:54:03,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:54:03,892 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 68 flow [2023-08-30 09:54:03,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-30 09:54:03,893 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-30 09:54:03,893 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 68 flow [2023-08-30 09:54:03,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:03,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:03,894 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 09:54:03,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 09:54:03,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:54:03,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:03,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1866383911, now seen corresponding path program 1 times [2023-08-30 09:54:03,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:03,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885518373] [2023-08-30 09:54:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:03,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885518373] [2023-08-30 09:54:03,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885518373] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97789474] [2023-08-30 09:54:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:03,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:03,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:03,965 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 09:54:03,988 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 09:54:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:04,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:54:04,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:04,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:54:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97789474] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:54:04,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:54:04,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-08-30 09:54:04,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458223339] [2023-08-30 09:54:04,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:54:04,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:04,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:04,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:04,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:04,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 255 [2023-08-30 09:54:04,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 68 flow. Second operand has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:04,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:04,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 255 [2023-08-30 09:54:04,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:04,199 INFO L130 PetriNetUnfolder]: 16/46 cut-off events. [2023-08-30 09:54:04,199 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 09:54:04,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 46 events. 16/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 9/55 useless extension candidates. Maximal degree in co-relation 103. Up to 34 conditions per place. [2023-08-30 09:54:04,199 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-30 09:54:04,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 104 flow [2023-08-30 09:54:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:54:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:54:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2023-08-30 09:54:04,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44607843137254904 [2023-08-30 09:54:04,201 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2023-08-30 09:54:04,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2023-08-30 09:54:04,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:04,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2023-08-30 09:54:04,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:04,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:04,204 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:04,204 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 68 flow. Second operand 4 states and 455 transitions. [2023-08-30 09:54:04,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 104 flow [2023-08-30 09:54:04,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 09:54:04,205 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-30 09:54:04,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-30 09:54:04,206 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -16 predicate places. [2023-08-30 09:54:04,206 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-30 09:54:04,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:04,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-30 09:54:04,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-30 09:54:04,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-30 09:54:04,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-30 09:54:04,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-30 09:54:04,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-30 09:54:04,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-30 09:54:04,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-08-30 09:54:04,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-30 09:54:04,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-30 09:54:04,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-30 09:54:04,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-30 09:54:04,217 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 09:54:04,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:04,418 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 09:54:04,420 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 09:54:04,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 134 transitions, 276 flow [2023-08-30 09:54:04,432 INFO L130 PetriNetUnfolder]: 23/175 cut-off events. [2023-08-30 09:54:04,432 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:54:04,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 23/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 403 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 09:54:04,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 134 transitions, 276 flow [2023-08-30 09:54:04,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 125 transitions, 255 flow [2023-08-30 09:54:04,433 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:04,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 125 transitions, 255 flow [2023-08-30 09:54:04,434 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 125 transitions, 255 flow [2023-08-30 09:54:04,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 125 transitions, 255 flow [2023-08-30 09:54:04,441 INFO L130 PetriNetUnfolder]: 22/166 cut-off events. [2023-08-30 09:54:04,441 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:04,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 166 events. 22/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 391 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 09:54:04,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-08-30 09:54:07,111 INFO L134 LiptonReduction]: Checked pairs total: 5695 [2023-08-30 09:54:07,111 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-30 09:54:07,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 09:54:07,113 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;@3e02ce99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:07,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 09:54:07,115 INFO L130 PetriNetUnfolder]: 5/30 cut-off events. [2023-08-30 09:54:07,115 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:07,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:07,116 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 09:54:07,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 09:54:07,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1655841234, now seen corresponding path program 1 times [2023-08-30 09:54:07,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:07,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821335242] [2023-08-30 09:54:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:07,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:54:07,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 09:54:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:54:07,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 09:54:07,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 09:54:07,157 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 09:54:07,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 09:54:07,158 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 09:54:07,159 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 09:54:07,160 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 09:54:07,160 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 09:54:07,179 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 09:54:07,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:07,214 INFO L130 PetriNetUnfolder]: 40/290 cut-off events. [2023-08-30 09:54:07,214 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:07,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 40/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 838 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 177. Up to 9 conditions per place. [2023-08-30 09:54:07,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:07,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:07,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:07,218 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:07,218 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:07,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:07,233 INFO L130 PetriNetUnfolder]: 40/290 cut-off events. [2023-08-30 09:54:07,233 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:07,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 40/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 838 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 177. Up to 9 conditions per place. [2023-08-30 09:54:07,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 11304 [2023-08-30 09:54:09,804 INFO L134 LiptonReduction]: Checked pairs total: 27145 [2023-08-30 09:54:09,804 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-30 09:54:09,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:54:09,806 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;@3e02ce99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:09,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 09:54:09,808 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 09:54:09,808 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:09,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:09,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:54:09,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:09,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 940740886, now seen corresponding path program 1 times [2023-08-30 09:54:09,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:09,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010706432] [2023-08-30 09:54:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:09,833 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 09:54:09,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:09,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010706432] [2023-08-30 09:54:09,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010706432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:09,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:09,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:09,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828636384] [2023-08-30 09:54:09,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:09,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:09,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:09,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 311 [2023-08-30 09:54:09,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:09,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:09,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 311 [2023-08-30 09:54:09,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:10,313 INFO L130 PetriNetUnfolder]: 6206/9877 cut-off events. [2023-08-30 09:54:10,313 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-08-30 09:54:10,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19669 conditions, 9877 events. 6206/9877 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 62014 event pairs, 2814 based on Foata normal form. 681/7245 useless extension candidates. Maximal degree in co-relation 2110. Up to 9663 conditions per place. [2023-08-30 09:54:10,346 INFO L137 encePairwiseOnDemand]: 290/311 looper letters, 64 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 09:54:10,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 292 flow [2023-08-30 09:54:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 09:54:10,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669882100750268 [2023-08-30 09:54:10,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 09:54:10,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 09:54:10,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:10,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 09:54:10,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,352 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 158 flow. Second operand 3 states and 529 transitions. [2023-08-30 09:54:10,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 292 flow [2023-08-30 09:54:10,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:54:10,354 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 146 flow [2023-08-30 09:54:10,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 09:54:10,355 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2023-08-30 09:54:10,356 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 146 flow [2023-08-30 09:54:10,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:10,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:10,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 09:54:10,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:10,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2116211709, now seen corresponding path program 1 times [2023-08-30 09:54:10,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:10,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813899180] [2023-08-30 09:54:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:10,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:10,382 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 09:54:10,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:10,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813899180] [2023-08-30 09:54:10,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813899180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:10,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:10,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686686515] [2023-08-30 09:54:10,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:10,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:10,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 311 [2023-08-30 09:54:10,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:10,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 311 [2023-08-30 09:54:10,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:10,825 INFO L130 PetriNetUnfolder]: 5596/8840 cut-off events. [2023-08-30 09:54:10,825 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES. [2023-08-30 09:54:10,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18766 conditions, 8840 events. 5596/8840 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53722 event pairs, 2077 based on Foata normal form. 0/6289 useless extension candidates. Maximal degree in co-relation 18673. Up to 8160 conditions per place. [2023-08-30 09:54:10,856 INFO L137 encePairwiseOnDemand]: 303/311 looper letters, 71 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-30 09:54:10,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 358 flow [2023-08-30 09:54:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-30 09:54:10,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487674169346195 [2023-08-30 09:54:10,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-30 09:54:10,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-30 09:54:10,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:10,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-30 09:54:10,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,861 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 146 flow. Second operand 3 states and 512 transitions. [2023-08-30 09:54:10,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 358 flow [2023-08-30 09:54:10,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:10,866 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 171 flow [2023-08-30 09:54:10,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-30 09:54:10,867 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-08-30 09:54:10,867 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 171 flow [2023-08-30 09:54:10,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:10,867 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:54:10,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 09:54:10,867 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:10,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash -546469410, now seen corresponding path program 1 times [2023-08-30 09:54:10,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:10,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187856304] [2023-08-30 09:54:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:10,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:10,894 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 09:54:10,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:10,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187856304] [2023-08-30 09:54:10,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187856304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:10,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:10,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:54:10,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624071821] [2023-08-30 09:54:10,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:10,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:10,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:10,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 311 [2023-08-30 09:54:10,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:10,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:10,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 311 [2023-08-30 09:54:10,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:11,434 INFO L130 PetriNetUnfolder]: 5216/8235 cut-off events. [2023-08-30 09:54:11,435 INFO L131 PetriNetUnfolder]: For 813/813 co-relation queries the response was YES. [2023-08-30 09:54:11,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18512 conditions, 8235 events. 5216/8235 cut-off events. For 813/813 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 52294 event pairs, 933 based on Foata normal form. 0/6438 useless extension candidates. Maximal degree in co-relation 12597. Up to 6576 conditions per place. [2023-08-30 09:54:11,458 INFO L137 encePairwiseOnDemand]: 307/311 looper letters, 79 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-30 09:54:11,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 413 flow [2023-08-30 09:54:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2023-08-30 09:54:11,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509110396570204 [2023-08-30 09:54:11,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2023-08-30 09:54:11,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2023-08-30 09:54:11,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:11,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2023-08-30 09:54:11,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:11,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:11,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:11,463 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 171 flow. Second operand 3 states and 514 transitions. [2023-08-30 09:54:11,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 413 flow [2023-08-30 09:54:11,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:11,466 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 180 flow [2023-08-30 09:54:11,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 09:54:11,468 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-30 09:54:11,468 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 180 flow [2023-08-30 09:54:11,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:11,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:11,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:54:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 09:54:11,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:11,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash -546469448, now seen corresponding path program 1 times [2023-08-30 09:54:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666005487] [2023-08-30 09:54:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:11,518 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 09:54:11,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666005487] [2023-08-30 09:54:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666005487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127130733] [2023-08-30 09:54:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:11,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:11,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:11,520 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 09:54:11,522 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 09:54:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:11,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:54:11,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:11,589 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 09:54:11,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:54:11,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127130733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:11,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:54:11,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 09:54:11,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019830458] [2023-08-30 09:54:11,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:11,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:54:11,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:11,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:54:11,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:11,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 311 [2023-08-30 09:54:11,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:11,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:11,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 311 [2023-08-30 09:54:11,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:11,979 INFO L130 PetriNetUnfolder]: 4836/7743 cut-off events. [2023-08-30 09:54:11,979 INFO L131 PetriNetUnfolder]: For 2422/2422 co-relation queries the response was YES. [2023-08-30 09:54:11,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17736 conditions, 7743 events. 4836/7743 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 45815 event pairs, 2384 based on Foata normal form. 205/6398 useless extension candidates. Maximal degree in co-relation 2985. Up to 7578 conditions per place. [2023-08-30 09:54:12,007 INFO L137 encePairwiseOnDemand]: 308/311 looper letters, 62 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 09:54:12,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 330 flow [2023-08-30 09:54:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:54:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:54:12,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 647 transitions. [2023-08-30 09:54:12,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520096463022508 [2023-08-30 09:54:12,009 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 647 transitions. [2023-08-30 09:54:12,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 647 transitions. [2023-08-30 09:54:12,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:12,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 647 transitions. [2023-08-30 09:54:12,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,014 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 180 flow. Second operand 4 states and 647 transitions. [2023-08-30 09:54:12,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 330 flow [2023-08-30 09:54:12,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:12,017 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 176 flow [2023-08-30 09:54:12,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-08-30 09:54:12,018 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2023-08-30 09:54:12,018 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 176 flow [2023-08-30 09:54:12,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:12,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:12,027 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 09:54:12,223 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,SelfDestructingSolverStorable9 [2023-08-30 09:54:12,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:12,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1242253955, now seen corresponding path program 1 times [2023-08-30 09:54:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:12,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978294230] [2023-08-30 09:54:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:12,274 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 09:54:12,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978294230] [2023-08-30 09:54:12,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978294230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:12,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:12,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:54:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433778951] [2023-08-30 09:54:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:12,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:54:12,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:54:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:12,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 311 [2023-08-30 09:54:12,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:12,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 311 [2023-08-30 09:54:12,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:12,927 INFO L130 PetriNetUnfolder]: 6019/9614 cut-off events. [2023-08-30 09:54:12,927 INFO L131 PetriNetUnfolder]: For 2169/2169 co-relation queries the response was YES. [2023-08-30 09:54:12,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21721 conditions, 9614 events. 6019/9614 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 60095 event pairs, 929 based on Foata normal form. 0/7909 useless extension candidates. Maximal degree in co-relation 21615. Up to 5273 conditions per place. [2023-08-30 09:54:12,965 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 170 selfloop transitions, 19 changer transitions 0/194 dead transitions. [2023-08-30 09:54:12,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 194 transitions, 958 flow [2023-08-30 09:54:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:54:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:54:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1176 transitions. [2023-08-30 09:54:12,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5401929260450161 [2023-08-30 09:54:12,968 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1176 transitions. [2023-08-30 09:54:12,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1176 transitions. [2023-08-30 09:54:12,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:12,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1176 transitions. [2023-08-30 09:54:12,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,974 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,974 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 176 flow. Second operand 7 states and 1176 transitions. [2023-08-30 09:54:12,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 194 transitions, 958 flow [2023-08-30 09:54:12,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 194 transitions, 951 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:12,979 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 332 flow [2023-08-30 09:54:12,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-30 09:54:12,980 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2023-08-30 09:54:12,980 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 332 flow [2023-08-30 09:54:12,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:12,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:12,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:12,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 09:54:12,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:12,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:12,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1242253901, now seen corresponding path program 1 times [2023-08-30 09:54:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:12,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129644013] [2023-08-30 09:54:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:12,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:13,027 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 09:54:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129644013] [2023-08-30 09:54:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129644013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:13,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:13,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:54:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392065749] [2023-08-30 09:54:13,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:13,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:54:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:54:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:13,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 311 [2023-08-30 09:54:13,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:13,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:13,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 311 [2023-08-30 09:54:13,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:13,606 INFO L130 PetriNetUnfolder]: 5690/9254 cut-off events. [2023-08-30 09:54:13,606 INFO L131 PetriNetUnfolder]: For 6454/6454 co-relation queries the response was YES. [2023-08-30 09:54:13,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25270 conditions, 9254 events. 5690/9254 cut-off events. For 6454/6454 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 58948 event pairs, 864 based on Foata normal form. 315/8888 useless extension candidates. Maximal degree in co-relation 25159. Up to 5381 conditions per place. [2023-08-30 09:54:13,643 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 173 selfloop transitions, 24 changer transitions 0/202 dead transitions. [2023-08-30 09:54:13,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 202 transitions, 1152 flow [2023-08-30 09:54:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:54:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:54:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1173 transitions. [2023-08-30 09:54:13,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388148828663298 [2023-08-30 09:54:13,647 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1173 transitions. [2023-08-30 09:54:13,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1173 transitions. [2023-08-30 09:54:13,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:13,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1173 transitions. [2023-08-30 09:54:13,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.57142857142858) internal successors, (1173), 7 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:13,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:13,652 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:13,653 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 332 flow. Second operand 7 states and 1173 transitions. [2023-08-30 09:54:13,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 202 transitions, 1152 flow [2023-08-30 09:54:13,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 202 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:13,664 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 522 flow [2023-08-30 09:54:13,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-08-30 09:54:13,665 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2023-08-30 09:54:13,665 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 522 flow [2023-08-30 09:54:13,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:13,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:13,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:13,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 09:54:13,666 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:13,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash -200534203, now seen corresponding path program 1 times [2023-08-30 09:54:13,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:13,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846662104] [2023-08-30 09:54:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:13,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846662104] [2023-08-30 09:54:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846662104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:13,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:13,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:54:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125061247] [2023-08-30 09:54:13,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:54:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:54:13,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:13,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 311 [2023-08-30 09:54:13,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 522 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:13,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:13,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 311 [2023-08-30 09:54:13,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:14,326 INFO L130 PetriNetUnfolder]: 6254/10015 cut-off events. [2023-08-30 09:54:14,326 INFO L131 PetriNetUnfolder]: For 16611/16611 co-relation queries the response was YES. [2023-08-30 09:54:14,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30792 conditions, 10015 events. 6254/10015 cut-off events. For 16611/16611 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 62543 event pairs, 1501 based on Foata normal form. 246/9539 useless extension candidates. Maximal degree in co-relation 30670. Up to 6435 conditions per place. [2023-08-30 09:54:14,366 INFO L137 encePairwiseOnDemand]: 298/311 looper letters, 152 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2023-08-30 09:54:14,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 179 transitions, 1225 flow [2023-08-30 09:54:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:54:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:54:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 991 transitions. [2023-08-30 09:54:14,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310825294748124 [2023-08-30 09:54:14,368 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 991 transitions. [2023-08-30 09:54:14,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 991 transitions. [2023-08-30 09:54:14,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:14,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 991 transitions. [2023-08-30 09:54:14,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:14,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:14,373 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:14,373 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 522 flow. Second operand 6 states and 991 transitions. [2023-08-30 09:54:14,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 179 transitions, 1225 flow [2023-08-30 09:54:14,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 179 transitions, 1216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:14,426 INFO L231 Difference]: Finished difference. Result has 89 places, 95 transitions, 720 flow [2023-08-30 09:54:14,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=720, PETRI_PLACES=89, PETRI_TRANSITIONS=95} [2023-08-30 09:54:14,427 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2023-08-30 09:54:14,427 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 95 transitions, 720 flow [2023-08-30 09:54:14,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:14,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:14,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:14,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 09:54:14,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:14,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash -200534180, now seen corresponding path program 1 times [2023-08-30 09:54:14,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:14,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391121226] [2023-08-30 09:54:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:14,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391121226] [2023-08-30 09:54:14,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391121226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:14,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:14,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:54:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447059780] [2023-08-30 09:54:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:54:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:54:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:14,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 311 [2023-08-30 09:54:14,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 95 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:14,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:14,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 311 [2023-08-30 09:54:14,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:15,055 INFO L130 PetriNetUnfolder]: 5732/9222 cut-off events. [2023-08-30 09:54:15,055 INFO L131 PetriNetUnfolder]: For 23534/23534 co-relation queries the response was YES. [2023-08-30 09:54:15,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29921 conditions, 9222 events. 5732/9222 cut-off events. For 23534/23534 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 57039 event pairs, 1434 based on Foata normal form. 246/8793 useless extension candidates. Maximal degree in co-relation 29793. Up to 6117 conditions per place. [2023-08-30 09:54:15,092 INFO L137 encePairwiseOnDemand]: 298/311 looper letters, 147 selfloop transitions, 20 changer transitions 0/172 dead transitions. [2023-08-30 09:54:15,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 172 transitions, 1234 flow [2023-08-30 09:54:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:54:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:54:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 990 transitions. [2023-08-30 09:54:15,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305466237942122 [2023-08-30 09:54:15,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 990 transitions. [2023-08-30 09:54:15,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 990 transitions. [2023-08-30 09:54:15,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:15,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 990 transitions. [2023-08-30 09:54:15,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:15,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:15,099 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:15,099 INFO L175 Difference]: Start difference. First operand has 89 places, 95 transitions, 720 flow. Second operand 6 states and 990 transitions. [2023-08-30 09:54:15,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 172 transitions, 1234 flow [2023-08-30 09:54:15,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 172 transitions, 1211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:15,160 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 654 flow [2023-08-30 09:54:15,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2023-08-30 09:54:15,161 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2023-08-30 09:54:15,161 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 654 flow [2023-08-30 09:54:15,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:15,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:15,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:15,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 09:54:15,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:15,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1744423564, now seen corresponding path program 1 times [2023-08-30 09:54:15,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:15,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87277064] [2023-08-30 09:54:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:15,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:54:15,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:15,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87277064] [2023-08-30 09:54:15,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87277064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:15,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460850509] [2023-08-30 09:54:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:15,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:15,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:15,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:54:15,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 09:54:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:15,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 09:54:15,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:54:15,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:54:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:54:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460850509] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:54:15,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:54:15,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-30 09:54:15,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940099019] [2023-08-30 09:54:15,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:54:15,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 09:54:15,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:15,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 09:54:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:54:15,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 311 [2023-08-30 09:54:15,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 654 flow. Second operand has 12 states, 12 states have (on average 138.58333333333334) internal successors, (1663), 12 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:15,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:15,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 311 [2023-08-30 09:54:15,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:16,827 INFO L130 PetriNetUnfolder]: 7882/12751 cut-off events. [2023-08-30 09:54:16,827 INFO L131 PetriNetUnfolder]: For 29938/29938 co-relation queries the response was YES. [2023-08-30 09:54:16,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41088 conditions, 12751 events. 7882/12751 cut-off events. For 29938/29938 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 84530 event pairs, 386 based on Foata normal form. 90/11884 useless extension candidates. Maximal degree in co-relation 40959. Up to 3116 conditions per place. [2023-08-30 09:54:16,897 INFO L137 encePairwiseOnDemand]: 294/311 looper letters, 439 selfloop transitions, 85 changer transitions 5/534 dead transitions. [2023-08-30 09:54:16,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 534 transitions, 3385 flow [2023-08-30 09:54:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 09:54:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 09:54:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3466 transitions. [2023-08-30 09:54:16,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065770242619118 [2023-08-30 09:54:16,905 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3466 transitions. [2023-08-30 09:54:16,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3466 transitions. [2023-08-30 09:54:16,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:16,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3466 transitions. [2023-08-30 09:54:16,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 157.54545454545453) internal successors, (3466), 22 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:16,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 311.0) internal successors, (7153), 23 states have internal predecessors, (7153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:16,919 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 311.0) internal successors, (7153), 23 states have internal predecessors, (7153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:16,919 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 654 flow. Second operand 22 states and 3466 transitions. [2023-08-30 09:54:16,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 534 transitions, 3385 flow [2023-08-30 09:54:16,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 534 transitions, 3370 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:54:16,996 INFO L231 Difference]: Finished difference. Result has 117 places, 135 transitions, 1386 flow [2023-08-30 09:54:16,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1386, PETRI_PLACES=117, PETRI_TRANSITIONS=135} [2023-08-30 09:54:16,997 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2023-08-30 09:54:16,997 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 135 transitions, 1386 flow [2023-08-30 09:54:17,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 138.58333333333334) internal successors, (1663), 12 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:17,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:17,002 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:17,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 09:54:17,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:17,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:17,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1210339515, now seen corresponding path program 1 times [2023-08-30 09:54:17,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:17,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929571055] [2023-08-30 09:54:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:17,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:17,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929571055] [2023-08-30 09:54:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929571055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:17,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:17,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:17,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229943646] [2023-08-30 09:54:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:17,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:17,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:17,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:17,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 135 transitions, 1386 flow. Second operand has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:17,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:17,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:17,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:18,456 INFO L130 PetriNetUnfolder]: 8266/13374 cut-off events. [2023-08-30 09:54:18,456 INFO L131 PetriNetUnfolder]: For 50953/50953 co-relation queries the response was YES. [2023-08-30 09:54:18,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50481 conditions, 13374 events. 8266/13374 cut-off events. For 50953/50953 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 89791 event pairs, 1216 based on Foata normal form. 138/12508 useless extension candidates. Maximal degree in co-relation 50337. Up to 6773 conditions per place. [2023-08-30 09:54:18,515 INFO L137 encePairwiseOnDemand]: 298/311 looper letters, 302 selfloop transitions, 64 changer transitions 3/374 dead transitions. [2023-08-30 09:54:18,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 374 transitions, 2984 flow [2023-08-30 09:54:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:54:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:54:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2223 transitions. [2023-08-30 09:54:18,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105649977032614 [2023-08-30 09:54:18,519 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2223 transitions. [2023-08-30 09:54:18,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2223 transitions. [2023-08-30 09:54:18,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:18,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2223 transitions. [2023-08-30 09:54:18,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 158.78571428571428) internal successors, (2223), 14 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:18,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:18,526 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:18,527 INFO L175 Difference]: Start difference. First operand has 117 places, 135 transitions, 1386 flow. Second operand 14 states and 2223 transitions. [2023-08-30 09:54:18,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 374 transitions, 2984 flow [2023-08-30 09:54:18,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 374 transitions, 2808 flow, removed 69 selfloop flow, removed 5 redundant places. [2023-08-30 09:54:18,711 INFO L231 Difference]: Finished difference. Result has 126 places, 147 transitions, 1523 flow [2023-08-30 09:54:18,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1523, PETRI_PLACES=126, PETRI_TRANSITIONS=147} [2023-08-30 09:54:18,712 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 69 predicate places. [2023-08-30 09:54:18,712 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 147 transitions, 1523 flow [2023-08-30 09:54:18,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:18,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:18,713 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:18,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 09:54:18,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:18,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash -988099041, now seen corresponding path program 1 times [2023-08-30 09:54:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:18,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352576740] [2023-08-30 09:54:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:18,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:18,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:18,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352576740] [2023-08-30 09:54:18,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352576740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:18,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:18,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140096109] [2023-08-30 09:54:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:18,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:18,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:18,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:18,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 147 transitions, 1523 flow. Second operand has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:18,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:18,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:18,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:19,960 INFO L130 PetriNetUnfolder]: 8223/13404 cut-off events. [2023-08-30 09:54:19,960 INFO L131 PetriNetUnfolder]: For 52937/52937 co-relation queries the response was YES. [2023-08-30 09:54:19,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51029 conditions, 13404 events. 8223/13404 cut-off events. For 52937/52937 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 90249 event pairs, 1153 based on Foata normal form. 90/12477 useless extension candidates. Maximal degree in co-relation 50881. Up to 7169 conditions per place. [2023-08-30 09:54:20,020 INFO L137 encePairwiseOnDemand]: 298/311 looper letters, 298 selfloop transitions, 57 changer transitions 0/360 dead transitions. [2023-08-30 09:54:20,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 360 transitions, 2931 flow [2023-08-30 09:54:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:54:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:54:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1931 transitions. [2023-08-30 09:54:20,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517416934619507 [2023-08-30 09:54:20,023 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1931 transitions. [2023-08-30 09:54:20,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1931 transitions. [2023-08-30 09:54:20,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:20,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1931 transitions. [2023-08-30 09:54:20,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 160.91666666666666) internal successors, (1931), 12 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:20,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 311.0) internal successors, (4043), 13 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:20,030 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 311.0) internal successors, (4043), 13 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:20,030 INFO L175 Difference]: Start difference. First operand has 126 places, 147 transitions, 1523 flow. Second operand 12 states and 1931 transitions. [2023-08-30 09:54:20,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 360 transitions, 2931 flow [2023-08-30 09:54:20,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 360 transitions, 2814 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-30 09:54:20,288 INFO L231 Difference]: Finished difference. Result has 132 places, 149 transitions, 1574 flow [2023-08-30 09:54:20,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1574, PETRI_PLACES=132, PETRI_TRANSITIONS=149} [2023-08-30 09:54:20,289 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 75 predicate places. [2023-08-30 09:54:20,289 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 149 transitions, 1574 flow [2023-08-30 09:54:20,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:20,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:20,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:20,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 09:54:20,290 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:20,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:20,290 INFO L85 PathProgramCache]: Analyzing trace with hash -988989189, now seen corresponding path program 2 times [2023-08-30 09:54:20,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:20,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839633879] [2023-08-30 09:54:20,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:20,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:20,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839633879] [2023-08-30 09:54:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839633879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:20,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:20,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429395055] [2023-08-30 09:54:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:20,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:20,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:20,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 149 transitions, 1574 flow. Second operand has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:20,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:20,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:20,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:21,632 INFO L130 PetriNetUnfolder]: 8251/13332 cut-off events. [2023-08-30 09:54:21,632 INFO L131 PetriNetUnfolder]: For 59111/59111 co-relation queries the response was YES. [2023-08-30 09:54:21,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51614 conditions, 13332 events. 8251/13332 cut-off events. For 59111/59111 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88983 event pairs, 1224 based on Foata normal form. 150/12478 useless extension candidates. Maximal degree in co-relation 51460. Up to 6789 conditions per place. [2023-08-30 09:54:21,695 INFO L137 encePairwiseOnDemand]: 298/311 looper letters, 288 selfloop transitions, 72 changer transitions 0/365 dead transitions. [2023-08-30 09:54:21,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 365 transitions, 3033 flow [2023-08-30 09:54:21,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:54:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:54:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2210 transitions. [2023-08-30 09:54:21,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075792374827744 [2023-08-30 09:54:21,698 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2210 transitions. [2023-08-30 09:54:21,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2210 transitions. [2023-08-30 09:54:21,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:21,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2210 transitions. [2023-08-30 09:54:21,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 157.85714285714286) internal successors, (2210), 14 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:21,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:21,705 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:21,705 INFO L175 Difference]: Start difference. First operand has 132 places, 149 transitions, 1574 flow. Second operand 14 states and 2210 transitions. [2023-08-30 09:54:21,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 365 transitions, 3033 flow [2023-08-30 09:54:22,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 365 transitions, 2874 flow, removed 16 selfloop flow, removed 11 redundant places. [2023-08-30 09:54:22,027 INFO L231 Difference]: Finished difference. Result has 135 places, 151 transitions, 1662 flow [2023-08-30 09:54:22,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1662, PETRI_PLACES=135, PETRI_TRANSITIONS=151} [2023-08-30 09:54:22,027 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 78 predicate places. [2023-08-30 09:54:22,028 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 151 transitions, 1662 flow [2023-08-30 09:54:22,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:22,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:22,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:22,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 09:54:22,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:22,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:22,029 INFO L85 PathProgramCache]: Analyzing trace with hash -988066683, now seen corresponding path program 1 times [2023-08-30 09:54:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:22,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701732317] [2023-08-30 09:54:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:22,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:22,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:22,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701732317] [2023-08-30 09:54:22,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701732317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:22,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:22,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:22,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194751677] [2023-08-30 09:54:22,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:22,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:22,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:22,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 151 transitions, 1662 flow. Second operand has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:22,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:22,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:22,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:23,351 INFO L130 PetriNetUnfolder]: 7934/12819 cut-off events. [2023-08-30 09:54:23,351 INFO L131 PetriNetUnfolder]: For 57304/57304 co-relation queries the response was YES. [2023-08-30 09:54:23,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49477 conditions, 12819 events. 7934/12819 cut-off events. For 57304/57304 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 84724 event pairs, 1702 based on Foata normal form. 150/12000 useless extension candidates. Maximal degree in co-relation 49327. Up to 8658 conditions per place. [2023-08-30 09:54:23,424 INFO L137 encePairwiseOnDemand]: 298/311 looper letters, 278 selfloop transitions, 45 changer transitions 4/332 dead transitions. [2023-08-30 09:54:23,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 332 transitions, 2776 flow [2023-08-30 09:54:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:54:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:54:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1905 transitions. [2023-08-30 09:54:23,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104501607717041 [2023-08-30 09:54:23,429 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1905 transitions. [2023-08-30 09:54:23,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1905 transitions. [2023-08-30 09:54:23,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:23,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1905 transitions. [2023-08-30 09:54:23,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 158.75) internal successors, (1905), 12 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:23,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 311.0) internal successors, (4043), 13 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:23,435 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 311.0) internal successors, (4043), 13 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:23,435 INFO L175 Difference]: Start difference. First operand has 135 places, 151 transitions, 1662 flow. Second operand 12 states and 1905 transitions. [2023-08-30 09:54:23,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 332 transitions, 2776 flow [2023-08-30 09:54:23,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 332 transitions, 2642 flow, removed 21 selfloop flow, removed 10 redundant places. [2023-08-30 09:54:23,781 INFO L231 Difference]: Finished difference. Result has 135 places, 140 transitions, 1437 flow [2023-08-30 09:54:23,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1437, PETRI_PLACES=135, PETRI_TRANSITIONS=140} [2023-08-30 09:54:23,782 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 78 predicate places. [2023-08-30 09:54:23,782 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 140 transitions, 1437 flow [2023-08-30 09:54:23,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:23,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:23,783 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:23,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 09:54:23,783 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:23,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:23,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1228310341, now seen corresponding path program 1 times [2023-08-30 09:54:23,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:23,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248567986] [2023-08-30 09:54:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:23,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248567986] [2023-08-30 09:54:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248567986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:23,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:23,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988180211] [2023-08-30 09:54:23,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:23,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:23,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:23,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:23,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 140 transitions, 1437 flow. Second operand has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:23,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:23,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:23,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:25,289 INFO L130 PetriNetUnfolder]: 8909/14456 cut-off events. [2023-08-30 09:54:25,289 INFO L131 PetriNetUnfolder]: For 56914/56914 co-relation queries the response was YES. [2023-08-30 09:54:25,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54903 conditions, 14456 events. 8909/14456 cut-off events. For 56914/56914 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 97950 event pairs, 1735 based on Foata normal form. 84/13430 useless extension candidates. Maximal degree in co-relation 54755. Up to 8620 conditions per place. [2023-08-30 09:54:25,367 INFO L137 encePairwiseOnDemand]: 300/311 looper letters, 265 selfloop transitions, 56 changer transitions 2/328 dead transitions. [2023-08-30 09:54:25,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 328 transitions, 2878 flow [2023-08-30 09:54:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:54:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:54:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1610 transitions. [2023-08-30 09:54:25,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176848874598071 [2023-08-30 09:54:25,369 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1610 transitions. [2023-08-30 09:54:25,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1610 transitions. [2023-08-30 09:54:25,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:25,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1610 transitions. [2023-08-30 09:54:25,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:25,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 311.0) internal successors, (3421), 11 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:25,373 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 311.0) internal successors, (3421), 11 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:25,373 INFO L175 Difference]: Start difference. First operand has 135 places, 140 transitions, 1437 flow. Second operand 10 states and 1610 transitions. [2023-08-30 09:54:25,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 328 transitions, 2878 flow [2023-08-30 09:54:25,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 328 transitions, 2815 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 09:54:25,751 INFO L231 Difference]: Finished difference. Result has 139 places, 159 transitions, 1820 flow [2023-08-30 09:54:25,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1820, PETRI_PLACES=139, PETRI_TRANSITIONS=159} [2023-08-30 09:54:25,752 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 82 predicate places. [2023-08-30 09:54:25,752 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 159 transitions, 1820 flow [2023-08-30 09:54:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:25,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:25,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:25,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 09:54:25,752 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:25,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:25,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1210339461, now seen corresponding path program 2 times [2023-08-30 09:54:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:25,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072714295] [2023-08-30 09:54:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:25,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:25,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072714295] [2023-08-30 09:54:25,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072714295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:25,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:25,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:25,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096286153] [2023-08-30 09:54:25,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:25,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:25,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:25,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:25,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:25,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:25,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 159 transitions, 1820 flow. Second operand has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:25,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:25,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:25,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:27,020 INFO L130 PetriNetUnfolder]: 8519/13762 cut-off events. [2023-08-30 09:54:27,020 INFO L131 PetriNetUnfolder]: For 67438/67438 co-relation queries the response was YES. [2023-08-30 09:54:27,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54014 conditions, 13762 events. 8519/13762 cut-off events. For 67438/67438 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 91751 event pairs, 2120 based on Foata normal form. 150/12860 useless extension candidates. Maximal degree in co-relation 53862. Up to 9733 conditions per place. [2023-08-30 09:54:27,098 INFO L137 encePairwiseOnDemand]: 299/311 looper letters, 255 selfloop transitions, 40 changer transitions 1/301 dead transitions. [2023-08-30 09:54:27,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 301 transitions, 2687 flow [2023-08-30 09:54:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:54:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:54:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1594 transitions. [2023-08-30 09:54:27,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512540192926045 [2023-08-30 09:54:27,100 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1594 transitions. [2023-08-30 09:54:27,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1594 transitions. [2023-08-30 09:54:27,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:27,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1594 transitions. [2023-08-30 09:54:27,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 159.4) internal successors, (1594), 10 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:27,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 311.0) internal successors, (3421), 11 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:27,104 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 311.0) internal successors, (3421), 11 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:27,104 INFO L175 Difference]: Start difference. First operand has 139 places, 159 transitions, 1820 flow. Second operand 10 states and 1594 transitions. [2023-08-30 09:54:27,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 301 transitions, 2687 flow [2023-08-30 09:54:27,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 301 transitions, 2548 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-08-30 09:54:27,687 INFO L231 Difference]: Finished difference. Result has 141 places, 146 transitions, 1557 flow [2023-08-30 09:54:27,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1557, PETRI_PLACES=141, PETRI_TRANSITIONS=146} [2023-08-30 09:54:27,687 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 84 predicate places. [2023-08-30 09:54:27,687 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 146 transitions, 1557 flow [2023-08-30 09:54:27,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:27,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:27,688 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:27,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 09:54:27,688 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:27,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1228310289, now seen corresponding path program 1 times [2023-08-30 09:54:27,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:27,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197456873] [2023-08-30 09:54:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:27,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:27,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:27,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197456873] [2023-08-30 09:54:27,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197456873] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:27,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:27,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029128525] [2023-08-30 09:54:27,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:27,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:27,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:27,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:27,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:27,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 146 transitions, 1557 flow. Second operand has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:27,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:27,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:27,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:28,986 INFO L130 PetriNetUnfolder]: 8440/13686 cut-off events. [2023-08-30 09:54:28,987 INFO L131 PetriNetUnfolder]: For 54356/54356 co-relation queries the response was YES. [2023-08-30 09:54:29,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52466 conditions, 13686 events. 8440/13686 cut-off events. For 54356/54356 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 91795 event pairs, 1771 based on Foata normal form. 90/12733 useless extension candidates. Maximal degree in co-relation 52316. Up to 8692 conditions per place. [2023-08-30 09:54:29,048 INFO L137 encePairwiseOnDemand]: 299/311 looper letters, 238 selfloop transitions, 49 changer transitions 12/304 dead transitions. [2023-08-30 09:54:29,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 304 transitions, 2738 flow [2023-08-30 09:54:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:54:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:54:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1446 transitions. [2023-08-30 09:54:29,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166130760986066 [2023-08-30 09:54:29,050 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1446 transitions. [2023-08-30 09:54:29,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1446 transitions. [2023-08-30 09:54:29,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:29,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1446 transitions. [2023-08-30 09:54:29,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 311.0) internal successors, (3110), 10 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,053 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 311.0) internal successors, (3110), 10 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,053 INFO L175 Difference]: Start difference. First operand has 141 places, 146 transitions, 1557 flow. Second operand 9 states and 1446 transitions. [2023-08-30 09:54:29,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 304 transitions, 2738 flow [2023-08-30 09:54:29,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 304 transitions, 2619 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-30 09:54:29,483 INFO L231 Difference]: Finished difference. Result has 141 places, 146 transitions, 1563 flow [2023-08-30 09:54:29,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1563, PETRI_PLACES=141, PETRI_TRANSITIONS=146} [2023-08-30 09:54:29,484 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 84 predicate places. [2023-08-30 09:54:29,484 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 146 transitions, 1563 flow [2023-08-30 09:54:29,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:29,484 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 09:54:29,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 09:54:29,484 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:29,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:29,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1467723417, now seen corresponding path program 1 times [2023-08-30 09:54:29,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:29,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796636543] [2023-08-30 09:54:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:29,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:29,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796636543] [2023-08-30 09:54:29,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796636543] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887591584] [2023-08-30 09:54:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:29,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:29,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:29,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:54:29,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 09:54:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:29,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:54:29,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:29,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:54:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:29,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887591584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:54:29,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:54:29,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-08-30 09:54:29,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082553397] [2023-08-30 09:54:29,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:54:29,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:29,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:29,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:29,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:29,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 311 [2023-08-30 09:54:29,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 146 transitions, 1563 flow. Second operand has 8 states, 8 states have (on average 142.125) internal successors, (1137), 8 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:29,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 311 [2023-08-30 09:54:29,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:29,925 INFO L130 PetriNetUnfolder]: 1617/3144 cut-off events. [2023-08-30 09:54:29,925 INFO L131 PetriNetUnfolder]: For 16327/16327 co-relation queries the response was YES. [2023-08-30 09:54:29,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13126 conditions, 3144 events. 1617/3144 cut-off events. For 16327/16327 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21352 event pairs, 120 based on Foata normal form. 378/3521 useless extension candidates. Maximal degree in co-relation 11587. Up to 2036 conditions per place. [2023-08-30 09:54:29,937 INFO L137 encePairwiseOnDemand]: 307/311 looper letters, 149 selfloop transitions, 3 changer transitions 96/252 dead transitions. [2023-08-30 09:54:29,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 252 transitions, 3437 flow [2023-08-30 09:54:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:54:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:54:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 760 transitions. [2023-08-30 09:54:29,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887459807073955 [2023-08-30 09:54:29,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 760 transitions. [2023-08-30 09:54:29,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 760 transitions. [2023-08-30 09:54:29,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:29,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 760 transitions. [2023-08-30 09:54:29,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 311.0) internal successors, (1866), 6 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 311.0) internal successors, (1866), 6 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,940 INFO L175 Difference]: Start difference. First operand has 141 places, 146 transitions, 1563 flow. Second operand 5 states and 760 transitions. [2023-08-30 09:54:29,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 252 transitions, 3437 flow [2023-08-30 09:54:29,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 252 transitions, 3017 flow, removed 33 selfloop flow, removed 14 redundant places. [2023-08-30 09:54:29,962 INFO L231 Difference]: Finished difference. Result has 118 places, 78 transitions, 680 flow [2023-08-30 09:54:29,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=680, PETRI_PLACES=118, PETRI_TRANSITIONS=78} [2023-08-30 09:54:29,963 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 61 predicate places. [2023-08-30 09:54:29,963 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 78 transitions, 680 flow [2023-08-30 09:54:29,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.125) internal successors, (1137), 8 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:29,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:29,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:29,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 09:54:30,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:30,164 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:30,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1704841772, now seen corresponding path program 1 times [2023-08-30 09:54:30,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:30,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221923525] [2023-08-30 09:54:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:30,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:30,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:30,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221923525] [2023-08-30 09:54:30,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221923525] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:30,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024569064] [2023-08-30 09:54:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:30,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:30,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:54:30,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:54:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:30,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 09:54:30,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:30,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:54:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024569064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:30,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:54:30,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 09:54:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723320978] [2023-08-30 09:54:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:30,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:54:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:54:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:54:30,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 311 [2023-08-30 09:54:30,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 78 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:30,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:30,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 311 [2023-08-30 09:54:30,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:30,567 INFO L130 PetriNetUnfolder]: 955/1700 cut-off events. [2023-08-30 09:54:30,567 INFO L131 PetriNetUnfolder]: For 6406/6406 co-relation queries the response was YES. [2023-08-30 09:54:30,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6760 conditions, 1700 events. 955/1700 cut-off events. For 6406/6406 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9365 event pairs, 343 based on Foata normal form. 27/1723 useless extension candidates. Maximal degree in co-relation 6610. Up to 720 conditions per place. [2023-08-30 09:54:30,573 INFO L137 encePairwiseOnDemand]: 300/311 looper letters, 76 selfloop transitions, 33 changer transitions 8/121 dead transitions. [2023-08-30 09:54:30,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 121 transitions, 1067 flow [2023-08-30 09:54:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 09:54:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 09:54:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1177 transitions. [2023-08-30 09:54:30,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47307073954983925 [2023-08-30 09:54:30,575 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1177 transitions. [2023-08-30 09:54:30,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1177 transitions. [2023-08-30 09:54:30,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:30,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1177 transitions. [2023-08-30 09:54:30,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.125) internal successors, (1177), 8 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:30,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 311.0) internal successors, (2799), 9 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:30,577 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 311.0) internal successors, (2799), 9 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:30,577 INFO L175 Difference]: Start difference. First operand has 118 places, 78 transitions, 680 flow. Second operand 8 states and 1177 transitions. [2023-08-30 09:54:30,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 121 transitions, 1067 flow [2023-08-30 09:54:30,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 121 transitions, 1013 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-08-30 09:54:30,588 INFO L231 Difference]: Finished difference. Result has 110 places, 76 transitions, 698 flow [2023-08-30 09:54:30,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=110, PETRI_TRANSITIONS=76} [2023-08-30 09:54:30,589 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2023-08-30 09:54:30,589 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 76 transitions, 698 flow [2023-08-30 09:54:30,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:30,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:30,589 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:30,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 09:54:30,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 09:54:30,794 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:30,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1631566793, now seen corresponding path program 1 times [2023-08-30 09:54:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340729742] [2023-08-30 09:54:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:54:30,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:30,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340729742] [2023-08-30 09:54:30,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340729742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:30,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637421513] [2023-08-30 09:54:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:30,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:30,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:30,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:54:30,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:54:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:30,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:54:30,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:54:30,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:54:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:54:31,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637421513] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:54:31,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:54:31,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-30 09:54:31,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325473562] [2023-08-30 09:54:31,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:54:31,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 09:54:31,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:31,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 09:54:31,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-30 09:54:31,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 311 [2023-08-30 09:54:31,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 76 transitions, 698 flow. Second operand has 14 states, 14 states have (on average 135.5) internal successors, (1897), 14 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:31,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:31,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 311 [2023-08-30 09:54:31,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:31,455 INFO L130 PetriNetUnfolder]: 895/1587 cut-off events. [2023-08-30 09:54:31,456 INFO L131 PetriNetUnfolder]: For 5276/5276 co-relation queries the response was YES. [2023-08-30 09:54:31,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6287 conditions, 1587 events. 895/1587 cut-off events. For 5276/5276 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8656 event pairs, 118 based on Foata normal form. 18/1604 useless extension candidates. Maximal degree in co-relation 6153. Up to 463 conditions per place. [2023-08-30 09:54:31,460 INFO L137 encePairwiseOnDemand]: 300/311 looper letters, 82 selfloop transitions, 28 changer transitions 43/157 dead transitions. [2023-08-30 09:54:31,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 157 transitions, 1312 flow [2023-08-30 09:54:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 09:54:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 09:54:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2373 transitions. [2023-08-30 09:54:31,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488367694344619 [2023-08-30 09:54:31,462 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2373 transitions. [2023-08-30 09:54:31,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2373 transitions. [2023-08-30 09:54:31,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:31,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2373 transitions. [2023-08-30 09:54:31,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 139.58823529411765) internal successors, (2373), 17 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:31,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 311.0) internal successors, (5598), 18 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:31,468 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 311.0) internal successors, (5598), 18 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:31,468 INFO L175 Difference]: Start difference. First operand has 110 places, 76 transitions, 698 flow. Second operand 17 states and 2373 transitions. [2023-08-30 09:54:31,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 157 transitions, 1312 flow [2023-08-30 09:54:31,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 1283 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:31,478 INFO L231 Difference]: Finished difference. Result has 121 places, 58 transitions, 535 flow [2023-08-30 09:54:31,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=535, PETRI_PLACES=121, PETRI_TRANSITIONS=58} [2023-08-30 09:54:31,479 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2023-08-30 09:54:31,479 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 58 transitions, 535 flow [2023-08-30 09:54:31,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 135.5) internal successors, (1897), 14 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:31,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:31,479 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:31,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 09:54:31,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:31,681 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:31,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:31,681 INFO L85 PathProgramCache]: Analyzing trace with hash -120663199, now seen corresponding path program 1 times [2023-08-30 09:54:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606372850] [2023-08-30 09:54:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:31,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:31,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606372850] [2023-08-30 09:54:31,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606372850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:31,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:31,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:31,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851384230] [2023-08-30 09:54:31,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:31,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:31,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:31,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:31,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:31,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 311 [2023-08-30 09:54:31,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 58 transitions, 535 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:31,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:31,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 311 [2023-08-30 09:54:31,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:32,014 INFO L130 PetriNetUnfolder]: 555/995 cut-off events. [2023-08-30 09:54:32,015 INFO L131 PetriNetUnfolder]: For 4053/4053 co-relation queries the response was YES. [2023-08-30 09:54:32,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 995 events. 555/995 cut-off events. For 4053/4053 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4806 event pairs, 121 based on Foata normal form. 9/1003 useless extension candidates. Maximal degree in co-relation 4027. Up to 457 conditions per place. [2023-08-30 09:54:32,018 INFO L137 encePairwiseOnDemand]: 301/311 looper letters, 91 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2023-08-30 09:54:32,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 1032 flow [2023-08-30 09:54:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:54:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:54:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1831 transitions. [2023-08-30 09:54:32,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528815236210735 [2023-08-30 09:54:32,020 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1831 transitions. [2023-08-30 09:54:32,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1831 transitions. [2023-08-30 09:54:32,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:32,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1831 transitions. [2023-08-30 09:54:32,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 140.84615384615384) internal successors, (1831), 13 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 311.0) internal successors, (4354), 14 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,024 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 311.0) internal successors, (4354), 14 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,024 INFO L175 Difference]: Start difference. First operand has 121 places, 58 transitions, 535 flow. Second operand 13 states and 1831 transitions. [2023-08-30 09:54:32,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 1032 flow [2023-08-30 09:54:32,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 120 transitions, 882 flow, removed 7 selfloop flow, removed 24 redundant places. [2023-08-30 09:54:32,032 INFO L231 Difference]: Finished difference. Result has 97 places, 60 transitions, 480 flow [2023-08-30 09:54:32,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=480, PETRI_PLACES=97, PETRI_TRANSITIONS=60} [2023-08-30 09:54:32,032 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2023-08-30 09:54:32,032 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 60 transitions, 480 flow [2023-08-30 09:54:32,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:32,033 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:32,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 09:54:32,033 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:32,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1453596353, now seen corresponding path program 1 times [2023-08-30 09:54:32,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:32,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248941956] [2023-08-30 09:54:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:32,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:32,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248941956] [2023-08-30 09:54:32,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248941956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:32,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:32,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911240896] [2023-08-30 09:54:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:32,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:32,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:32,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:32,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:32,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 60 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:32,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:32,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:32,288 INFO L130 PetriNetUnfolder]: 579/1037 cut-off events. [2023-08-30 09:54:32,288 INFO L131 PetriNetUnfolder]: For 2961/2961 co-relation queries the response was YES. [2023-08-30 09:54:32,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1037 events. 579/1037 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5076 event pairs, 124 based on Foata normal form. 9/1045 useless extension candidates. Maximal degree in co-relation 3837. Up to 542 conditions per place. [2023-08-30 09:54:32,292 INFO L137 encePairwiseOnDemand]: 302/311 looper letters, 85 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2023-08-30 09:54:32,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 111 transitions, 915 flow [2023-08-30 09:54:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 09:54:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 09:54:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1595 transitions. [2023-08-30 09:54:32,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662379421221865 [2023-08-30 09:54:32,294 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1595 transitions. [2023-08-30 09:54:32,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1595 transitions. [2023-08-30 09:54:32,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:32,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1595 transitions. [2023-08-30 09:54:32,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.0) internal successors, (1595), 11 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 311.0) internal successors, (3732), 12 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,298 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 311.0) internal successors, (3732), 12 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,298 INFO L175 Difference]: Start difference. First operand has 97 places, 60 transitions, 480 flow. Second operand 11 states and 1595 transitions. [2023-08-30 09:54:32,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 111 transitions, 915 flow [2023-08-30 09:54:32,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 855 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-08-30 09:54:32,304 INFO L231 Difference]: Finished difference. Result has 98 places, 64 transitions, 525 flow [2023-08-30 09:54:32,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=525, PETRI_PLACES=98, PETRI_TRANSITIONS=64} [2023-08-30 09:54:32,305 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 41 predicate places. [2023-08-30 09:54:32,305 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 64 transitions, 525 flow [2023-08-30 09:54:32,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:32,306 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:32,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 09:54:32,306 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:32,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1033922591, now seen corresponding path program 2 times [2023-08-30 09:54:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:32,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947899390] [2023-08-30 09:54:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947899390] [2023-08-30 09:54:32,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947899390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:32,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:32,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:32,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778436876] [2023-08-30 09:54:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:32,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 311 [2023-08-30 09:54:32,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 64 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:32,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 311 [2023-08-30 09:54:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:32,626 INFO L130 PetriNetUnfolder]: 570/1033 cut-off events. [2023-08-30 09:54:32,626 INFO L131 PetriNetUnfolder]: For 3272/3272 co-relation queries the response was YES. [2023-08-30 09:54:32,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 1033 events. 570/1033 cut-off events. For 3272/3272 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5079 event pairs, 121 based on Foata normal form. 9/1041 useless extension candidates. Maximal degree in co-relation 3787. Up to 586 conditions per place. [2023-08-30 09:54:32,630 INFO L137 encePairwiseOnDemand]: 301/311 looper letters, 85 selfloop transitions, 19 changer transitions 0/108 dead transitions. [2023-08-30 09:54:32,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 108 transitions, 873 flow [2023-08-30 09:54:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:54:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:54:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1414 transitions. [2023-08-30 09:54:32,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45466237942122184 [2023-08-30 09:54:32,631 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1414 transitions. [2023-08-30 09:54:32,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1414 transitions. [2023-08-30 09:54:32,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:32,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1414 transitions. [2023-08-30 09:54:32,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.4) internal successors, (1414), 10 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 311.0) internal successors, (3421), 11 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,634 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 311.0) internal successors, (3421), 11 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,635 INFO L175 Difference]: Start difference. First operand has 98 places, 64 transitions, 525 flow. Second operand 10 states and 1414 transitions. [2023-08-30 09:54:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 108 transitions, 873 flow [2023-08-30 09:54:32,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 108 transitions, 831 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 09:54:32,640 INFO L231 Difference]: Finished difference. Result has 103 places, 65 transitions, 517 flow [2023-08-30 09:54:32,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=103, PETRI_TRANSITIONS=65} [2023-08-30 09:54:32,641 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2023-08-30 09:54:32,641 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 65 transitions, 517 flow [2023-08-30 09:54:32,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:32,642 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:32,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 09:54:32,642 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:32,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1033922537, now seen corresponding path program 2 times [2023-08-30 09:54:32,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:32,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795072115] [2023-08-30 09:54:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:32,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:32,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:32,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795072115] [2023-08-30 09:54:32,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795072115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:32,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:32,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287667522] [2023-08-30 09:54:32,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:32,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 311 [2023-08-30 09:54:32,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 65 transitions, 517 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:32,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 311 [2023-08-30 09:54:32,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:32,936 INFO L130 PetriNetUnfolder]: 561/1019 cut-off events. [2023-08-30 09:54:32,936 INFO L131 PetriNetUnfolder]: For 2642/2642 co-relation queries the response was YES. [2023-08-30 09:54:32,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3796 conditions, 1019 events. 561/1019 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5060 event pairs, 55 based on Foata normal form. 9/1027 useless extension candidates. Maximal degree in co-relation 3703. Up to 264 conditions per place. [2023-08-30 09:54:32,939 INFO L137 encePairwiseOnDemand]: 301/311 looper letters, 88 selfloop transitions, 28 changer transitions 9/129 dead transitions. [2023-08-30 09:54:32,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 129 transitions, 983 flow [2023-08-30 09:54:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:54:32,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:54:32,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1969 transitions. [2023-08-30 09:54:32,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4522278364722095 [2023-08-30 09:54:32,948 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1969 transitions. [2023-08-30 09:54:32,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1969 transitions. [2023-08-30 09:54:32,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:32,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1969 transitions. [2023-08-30 09:54:32,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.64285714285714) internal successors, (1969), 14 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,952 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,952 INFO L175 Difference]: Start difference. First operand has 103 places, 65 transitions, 517 flow. Second operand 14 states and 1969 transitions. [2023-08-30 09:54:32,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 129 transitions, 983 flow [2023-08-30 09:54:32,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 129 transitions, 894 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-30 09:54:32,958 INFO L231 Difference]: Finished difference. Result has 104 places, 55 transitions, 412 flow [2023-08-30 09:54:32,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=412, PETRI_PLACES=104, PETRI_TRANSITIONS=55} [2023-08-30 09:54:32,958 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 47 predicate places. [2023-08-30 09:54:32,958 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 55 transitions, 412 flow [2023-08-30 09:54:32,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:32,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:32,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:32,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 09:54:32,959 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:32,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -120663145, now seen corresponding path program 3 times [2023-08-30 09:54:32,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:32,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662265826] [2023-08-30 09:54:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:32,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:33,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:33,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662265826] [2023-08-30 09:54:33,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662265826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:33,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:33,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831655948] [2023-08-30 09:54:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:33,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:33,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:33,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 311 [2023-08-30 09:54:33,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 55 transitions, 412 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:33,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 311 [2023-08-30 09:54:33,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:33,268 INFO L130 PetriNetUnfolder]: 453/830 cut-off events. [2023-08-30 09:54:33,268 INFO L131 PetriNetUnfolder]: For 1950/1950 co-relation queries the response was YES. [2023-08-30 09:54:33,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 830 events. 453/830 cut-off events. For 1950/1950 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3884 event pairs, 70 based on Foata normal form. 9/838 useless extension candidates. Maximal degree in co-relation 2961. Up to 318 conditions per place. [2023-08-30 09:54:33,270 INFO L137 encePairwiseOnDemand]: 301/311 looper letters, 64 selfloop transitions, 19 changer transitions 30/117 dead transitions. [2023-08-30 09:54:33,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 117 transitions, 866 flow [2023-08-30 09:54:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 09:54:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 09:54:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2233 transitions. [2023-08-30 09:54:33,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4487540192926045 [2023-08-30 09:54:33,272 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2233 transitions. [2023-08-30 09:54:33,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2233 transitions. [2023-08-30 09:54:33,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:33,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2233 transitions. [2023-08-30 09:54:33,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.5625) internal successors, (2233), 16 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 311.0) internal successors, (5287), 17 states have internal predecessors, (5287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,277 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 311.0) internal successors, (5287), 17 states have internal predecessors, (5287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,277 INFO L175 Difference]: Start difference. First operand has 104 places, 55 transitions, 412 flow. Second operand 16 states and 2233 transitions. [2023-08-30 09:54:33,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 117 transitions, 866 flow [2023-08-30 09:54:33,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 117 transitions, 750 flow, removed 2 selfloop flow, removed 23 redundant places. [2023-08-30 09:54:33,281 INFO L231 Difference]: Finished difference. Result has 88 places, 41 transitions, 246 flow [2023-08-30 09:54:33,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=246, PETRI_PLACES=88, PETRI_TRANSITIONS=41} [2023-08-30 09:54:33,282 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2023-08-30 09:54:33,282 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 41 transitions, 246 flow [2023-08-30 09:54:33,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:33,282 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:33,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 09:54:33,283 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:33,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1445293259, now seen corresponding path program 3 times [2023-08-30 09:54:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465195782] [2023-08-30 09:54:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:33,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:33,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465195782] [2023-08-30 09:54:33,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465195782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:33,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:33,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:33,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756561425] [2023-08-30 09:54:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:33,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:33,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:33,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 311 [2023-08-30 09:54:33,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 41 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:33,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 311 [2023-08-30 09:54:33,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:33,486 INFO L130 PetriNetUnfolder]: 300/560 cut-off events. [2023-08-30 09:54:33,486 INFO L131 PetriNetUnfolder]: For 894/894 co-relation queries the response was YES. [2023-08-30 09:54:33,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 560 events. 300/560 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2354 event pairs, 76 based on Foata normal form. 9/568 useless extension candidates. Maximal degree in co-relation 1791. Up to 253 conditions per place. [2023-08-30 09:54:33,487 INFO L137 encePairwiseOnDemand]: 303/311 looper letters, 26 selfloop transitions, 2 changer transitions 45/77 dead transitions. [2023-08-30 09:54:33,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 518 flow [2023-08-30 09:54:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 09:54:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 09:54:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1577 transitions. [2023-08-30 09:54:33,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609763227126571 [2023-08-30 09:54:33,489 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1577 transitions. [2023-08-30 09:54:33,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1577 transitions. [2023-08-30 09:54:33,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:33,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1577 transitions. [2023-08-30 09:54:33,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.36363636363637) internal successors, (1577), 11 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 311.0) internal successors, (3732), 12 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,492 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 311.0) internal successors, (3732), 12 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,492 INFO L175 Difference]: Start difference. First operand has 88 places, 41 transitions, 246 flow. Second operand 11 states and 1577 transitions. [2023-08-30 09:54:33,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 518 flow [2023-08-30 09:54:33,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 439 flow, removed 0 selfloop flow, removed 21 redundant places. [2023-08-30 09:54:33,494 INFO L231 Difference]: Finished difference. Result has 67 places, 28 transitions, 118 flow [2023-08-30 09:54:33,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=118, PETRI_PLACES=67, PETRI_TRANSITIONS=28} [2023-08-30 09:54:33,494 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-08-30 09:54:33,494 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 28 transitions, 118 flow [2023-08-30 09:54:33,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:33,495 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 09:54:33,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 09:54:33,495 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:54:33,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:33,495 INFO L85 PathProgramCache]: Analyzing trace with hash 791106401, now seen corresponding path program 4 times [2023-08-30 09:54:33,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:33,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738266102] [2023-08-30 09:54:33,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:33,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:54:33,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:33,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738266102] [2023-08-30 09:54:33,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738266102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:33,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:33,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:33,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398967141] [2023-08-30 09:54:33,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:33,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:33,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:33,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:33,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:33,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 311 [2023-08-30 09:54:33,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 28 transitions, 118 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:33,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 311 [2023-08-30 09:54:33,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:33,694 INFO L130 PetriNetUnfolder]: 178/342 cut-off events. [2023-08-30 09:54:33,694 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2023-08-30 09:54:33,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 342 events. 178/342 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1253 event pairs, 34 based on Foata normal form. 9/350 useless extension candidates. Maximal degree in co-relation 906. Up to 105 conditions per place. [2023-08-30 09:54:33,695 INFO L137 encePairwiseOnDemand]: 302/311 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-30 09:54:33,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 293 flow [2023-08-30 09:54:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:54:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:54:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1245 transitions. [2023-08-30 09:54:33,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44480171489817794 [2023-08-30 09:54:33,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1245 transitions. [2023-08-30 09:54:33,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1245 transitions. [2023-08-30 09:54:33,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:33,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1245 transitions. [2023-08-30 09:54:33,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.33333333333334) internal successors, (1245), 9 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 311.0) internal successors, (3110), 10 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,700 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 311.0) internal successors, (3110), 10 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,701 INFO L175 Difference]: Start difference. First operand has 67 places, 28 transitions, 118 flow. Second operand 9 states and 1245 transitions. [2023-08-30 09:54:33,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 293 flow [2023-08-30 09:54:33,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 275 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 09:54:33,702 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-30 09:54:33,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-30 09:54:33,702 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -10 predicate places. [2023-08-30 09:54:33,703 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-30 09:54:33,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:33,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 09:54:33,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 09:54:33,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 09:54:33,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 09:54:33,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 09:54:33,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 09:54:33,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 09:54:33,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 09:54:33,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 09:54:33,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 09:54:33,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 09:54:33,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 09:54:33,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 09:54:33,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 09:54:33,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 09:54:33,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 09:54:33,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 09:54:33,705 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:33,706 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 09:54:33,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:33,721 INFO L130 PetriNetUnfolder]: 40/290 cut-off events. [2023-08-30 09:54:33,721 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:33,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 40/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 838 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 177. Up to 9 conditions per place. [2023-08-30 09:54:33,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:33,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:33,723 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:33,723 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:33,724 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:33,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 09:54:33,735 INFO L130 PetriNetUnfolder]: 40/290 cut-off events. [2023-08-30 09:54:33,735 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:33,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 40/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 838 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 177. Up to 9 conditions per place. [2023-08-30 09:54:33,739 INFO L119 LiptonReduction]: Number of co-enabled transitions 11304 [2023-08-30 09:54:36,284 INFO L134 LiptonReduction]: Checked pairs total: 27179 [2023-08-30 09:54:36,285 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-30 09:54:36,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 09:54:36,286 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;@3e02ce99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:36,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 09:54:36,289 INFO L130 PetriNetUnfolder]: 15/70 cut-off events. [2023-08-30 09:54:36,289 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 09:54:36,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:36,289 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 09:54:36,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 09:54:36,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:36,289 INFO L85 PathProgramCache]: Analyzing trace with hash -308536091, now seen corresponding path program 1 times [2023-08-30 09:54:36,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:36,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153882318] [2023-08-30 09:54:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:54:36,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 09:54:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:54:36,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 09:54:36,302 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 09:54:36,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 09:54:36,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 09:54:36,302 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 09:54:36,302 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 09:54:36,303 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 09:54:36,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 09:54:36,326 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 09:54:36,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 210 transitions, 450 flow [2023-08-30 09:54:36,352 INFO L130 PetriNetUnfolder]: 62/444 cut-off events. [2023-08-30 09:54:36,352 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 09:54:36,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 62/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1474 event pairs, 1 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-30 09:54:36,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 210 transitions, 450 flow [2023-08-30 09:54:36,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 210 transitions, 450 flow [2023-08-30 09:54:36,356 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:36,357 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 210 transitions, 450 flow [2023-08-30 09:54:36,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 210 transitions, 450 flow [2023-08-30 09:54:36,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 210 transitions, 450 flow [2023-08-30 09:54:36,378 INFO L130 PetriNetUnfolder]: 62/444 cut-off events. [2023-08-30 09:54:36,379 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 09:54:36,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 62/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1474 event pairs, 1 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-30 09:54:36,388 INFO L119 LiptonReduction]: Number of co-enabled transitions 21168 [2023-08-30 09:54:39,095 INFO L134 LiptonReduction]: Checked pairs total: 52816 [2023-08-30 09:54:39,096 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 09:54:39,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:54:39,097 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;@3e02ce99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:39,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 09:54:39,098 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 09:54:39,098 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:39,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:39,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:54:39,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:54:39,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:39,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1465551925, now seen corresponding path program 1 times [2023-08-30 09:54:39,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:39,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674691258] [2023-08-30 09:54:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:39,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:39,117 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 09:54:39,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:39,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674691258] [2023-08-30 09:54:39,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674691258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:39,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:39,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:39,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700418793] [2023-08-30 09:54:39,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:39,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:39,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:39,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 373 [2023-08-30 09:54:39,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:39,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:39,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 373 [2023-08-30 09:54:39,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:46,395 INFO L130 PetriNetUnfolder]: 117789/166262 cut-off events. [2023-08-30 09:54:46,395 INFO L131 PetriNetUnfolder]: For 2593/2593 co-relation queries the response was YES. [2023-08-30 09:54:46,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330064 conditions, 166262 events. 117789/166262 cut-off events. For 2593/2593 co-relation queries the response was YES. Maximal size of possible extension queue 5239. Compared 1265192 event pairs, 74471 based on Foata normal form. 18507/131631 useless extension candidates. Maximal degree in co-relation 21768. Up to 162055 conditions per place. [2023-08-30 09:54:47,024 INFO L137 encePairwiseOnDemand]: 346/373 looper letters, 77 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 09:54:47,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 364 flow [2023-08-30 09:54:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-30 09:54:47,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701519213583557 [2023-08-30 09:54:47,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-30 09:54:47,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-30 09:54:47,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:47,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-30 09:54:47,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,028 INFO L175 Difference]: Start difference. First operand has 75 places, 93 transitions, 216 flow. Second operand 3 states and 638 transitions. [2023-08-30 09:54:47,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 364 flow [2023-08-30 09:54:47,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:54:47,031 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 192 flow [2023-08-30 09:54:47,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-30 09:54:47,031 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-08-30 09:54:47,032 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 192 flow [2023-08-30 09:54:47,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:47,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:47,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 09:54:47,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:54:47,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash -345351198, now seen corresponding path program 1 times [2023-08-30 09:54:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:47,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942178508] [2023-08-30 09:54:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:47,050 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 09:54:47,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942178508] [2023-08-30 09:54:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942178508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:47,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962042791] [2023-08-30 09:54:47,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:47,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:47,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 373 [2023-08-30 09:54:47,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:47,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 373 [2023-08-30 09:54:47,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:56,119 INFO L130 PetriNetUnfolder]: 135426/195120 cut-off events. [2023-08-30 09:54:56,119 INFO L131 PetriNetUnfolder]: For 10633/10633 co-relation queries the response was YES. [2023-08-30 09:54:56,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407406 conditions, 195120 events. 135426/195120 cut-off events. For 10633/10633 co-relation queries the response was YES. Maximal size of possible extension queue 6617. Compared 1568774 event pairs, 58624 based on Foata normal form. 0/139798 useless extension candidates. Maximal degree in co-relation 407306. Up to 136985 conditions per place. [2023-08-30 09:54:57,087 INFO L137 encePairwiseOnDemand]: 354/373 looper letters, 107 selfloop transitions, 13 changer transitions 0/129 dead transitions. [2023-08-30 09:54:57,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 578 flow [2023-08-30 09:54:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:57,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2023-08-30 09:54:57,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5746201966041108 [2023-08-30 09:54:57,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2023-08-30 09:54:57,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2023-08-30 09:54:57,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:57,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2023-08-30 09:54:57,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:57,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:57,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:57,091 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 192 flow. Second operand 3 states and 643 transitions. [2023-08-30 09:54:57,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 578 flow [2023-08-30 09:54:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 129 transitions, 575 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:57,103 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 302 flow [2023-08-30 09:54:57,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2023-08-30 09:54:57,103 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-08-30 09:54:57,103 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 302 flow [2023-08-30 09:54:57,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:57,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:57,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:57,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 09:54:57,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:54:57,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash -345351119, now seen corresponding path program 1 times [2023-08-30 09:54:57,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:57,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891334609] [2023-08-30 09:54:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:57,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:57,116 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 09:54:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:57,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891334609] [2023-08-30 09:54:57,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891334609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:57,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:57,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:57,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759506330] [2023-08-30 09:54:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:57,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:57,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 373 [2023-08-30 09:54:57,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:57,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:57,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 373 [2023-08-30 09:54:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:07,383 INFO L130 PetriNetUnfolder]: 142597/208040 cut-off events. [2023-08-30 09:55:07,383 INFO L131 PetriNetUnfolder]: For 69315/69845 co-relation queries the response was YES. [2023-08-30 09:55:07,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512255 conditions, 208040 events. 142597/208040 cut-off events. For 69315/69845 co-relation queries the response was YES. Maximal size of possible extension queue 7504. Compared 1731000 event pairs, 51728 based on Foata normal form. 4663/189635 useless extension candidates. Maximal degree in co-relation 220750. Up to 156527 conditions per place. [2023-08-30 09:55:08,362 INFO L137 encePairwiseOnDemand]: 354/373 looper letters, 119 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2023-08-30 09:55:08,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 144 transitions, 759 flow [2023-08-30 09:55:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:55:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:55:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2023-08-30 09:55:08,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5746201966041108 [2023-08-30 09:55:08,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2023-08-30 09:55:08,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2023-08-30 09:55:08,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:08,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2023-08-30 09:55:08,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:08,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:08,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:08,365 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 302 flow. Second operand 3 states and 643 transitions. [2023-08-30 09:55:08,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 144 transitions, 759 flow [2023-08-30 09:55:08,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 144 transitions, 727 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:55:08,957 INFO L231 Difference]: Finished difference. Result has 83 places, 100 transitions, 448 flow [2023-08-30 09:55:08,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=83, PETRI_TRANSITIONS=100} [2023-08-30 09:55:08,957 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2023-08-30 09:55:08,957 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 100 transitions, 448 flow [2023-08-30 09:55:08,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:08,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:08,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:55:08,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 09:55:08,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:55:08,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:08,958 INFO L85 PathProgramCache]: Analyzing trace with hash -678339621, now seen corresponding path program 1 times [2023-08-30 09:55:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716652226] [2023-08-30 09:55:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:08,972 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 09:55:08,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:08,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716652226] [2023-08-30 09:55:08,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716652226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:08,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:08,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:55:08,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307256576] [2023-08-30 09:55:08,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:55:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:55:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:55:08,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 373 [2023-08-30 09:55:08,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:08,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:08,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 373 [2023-08-30 09:55:08,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:19,118 INFO L130 PetriNetUnfolder]: 132982/194662 cut-off events. [2023-08-30 09:55:19,118 INFO L131 PetriNetUnfolder]: For 142228/142946 co-relation queries the response was YES. [2023-08-30 09:55:19,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526488 conditions, 194662 events. 132982/194662 cut-off events. For 142228/142946 co-relation queries the response was YES. Maximal size of possible extension queue 6782. Compared 1608395 event pairs, 113263 based on Foata normal form. 120/175667 useless extension candidates. Maximal degree in co-relation 180211. Up to 190939 conditions per place. [2023-08-30 09:55:20,013 INFO L137 encePairwiseOnDemand]: 371/373 looper letters, 89 selfloop transitions, 1 changer transitions 0/99 dead transitions. [2023-08-30 09:55:20,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 99 transitions, 624 flow [2023-08-30 09:55:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:55:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:55:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-30 09:55:20,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5281501340482574 [2023-08-30 09:55:20,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-30 09:55:20,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-30 09:55:20,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:20,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-30 09:55:20,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:20,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:20,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:20,015 INFO L175 Difference]: Start difference. First operand has 83 places, 100 transitions, 448 flow. Second operand 3 states and 591 transitions. [2023-08-30 09:55:20,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 99 transitions, 624 flow [2023-08-30 09:55:23,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 99 transitions, 592 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:55:23,723 INFO L231 Difference]: Finished difference. Result has 82 places, 99 transitions, 414 flow [2023-08-30 09:55:23,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=82, PETRI_TRANSITIONS=99} [2023-08-30 09:55:23,724 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2023-08-30 09:55:23,724 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 99 transitions, 414 flow [2023-08-30 09:55:23,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:23,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:23,724 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:55:23,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 09:55:23,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:55:23,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash -678339570, now seen corresponding path program 1 times [2023-08-30 09:55:23,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:23,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693942397] [2023-08-30 09:55:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:23,747 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 09:55:23,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:23,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693942397] [2023-08-30 09:55:23,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693942397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:23,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:23,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:55:23,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875508472] [2023-08-30 09:55:23,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:23,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:55:23,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:23,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:55:23,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:55:23,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 373 [2023-08-30 09:55:23,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:23,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:23,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 373 [2023-08-30 09:55:23,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:32,391 INFO L130 PetriNetUnfolder]: 123367/178707 cut-off events. [2023-08-30 09:55:32,391 INFO L131 PetriNetUnfolder]: For 106434/106528 co-relation queries the response was YES. [2023-08-30 09:55:32,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467843 conditions, 178707 events. 123367/178707 cut-off events. For 106434/106528 co-relation queries the response was YES. Maximal size of possible extension queue 6204. Compared 1516585 event pairs, 13187 based on Foata normal form. 23/151608 useless extension candidates. Maximal degree in co-relation 467828. Up to 153715 conditions per place. [2023-08-30 09:55:33,248 INFO L137 encePairwiseOnDemand]: 369/373 looper letters, 152 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2023-08-30 09:55:33,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 165 transitions, 1024 flow [2023-08-30 09:55:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:55:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:55:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-30 09:55:33,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603217158176944 [2023-08-30 09:55:33,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-30 09:55:33,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-30 09:55:33,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:33,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-30 09:55:33,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:33,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:33,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:33,250 INFO L175 Difference]: Start difference. First operand has 82 places, 99 transitions, 414 flow. Second operand 3 states and 627 transitions. [2023-08-30 09:55:33,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 165 transitions, 1024 flow [2023-08-30 09:55:33,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 165 transitions, 1023 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:33,257 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 425 flow [2023-08-30 09:55:33,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2023-08-30 09:55:33,258 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2023-08-30 09:55:33,258 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 425 flow [2023-08-30 09:55:33,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:33,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:33,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:33,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 09:55:33,258 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:55:33,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:33,258 INFO L85 PathProgramCache]: Analyzing trace with hash 937480088, now seen corresponding path program 1 times [2023-08-30 09:55:33,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:33,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652144258] [2023-08-30 09:55:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:33,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:33,284 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 09:55:33,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:33,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652144258] [2023-08-30 09:55:33,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652144258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:33,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:33,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318116828] [2023-08-30 09:55:33,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:33,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:33,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:55:33,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 373 [2023-08-30 09:55:33,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 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 09:55:33,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:33,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 373 [2023-08-30 09:55:33,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:44,531 INFO L130 PetriNetUnfolder]: 156047/224980 cut-off events. [2023-08-30 09:55:44,531 INFO L131 PetriNetUnfolder]: For 119211/119552 co-relation queries the response was YES. [2023-08-30 09:55:44,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602390 conditions, 224980 events. 156047/224980 cut-off events. For 119211/119552 co-relation queries the response was YES. Maximal size of possible extension queue 7665. Compared 1829249 event pairs, 36456 based on Foata normal form. 308/194661 useless extension candidates. Maximal degree in co-relation 602373. Up to 131163 conditions per place. [2023-08-30 09:55:45,688 INFO L137 encePairwiseOnDemand]: 353/373 looper letters, 266 selfloop transitions, 52 changer transitions 0/327 dead transitions. [2023-08-30 09:55:45,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 327 transitions, 1881 flow [2023-08-30 09:55:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1478 transitions. [2023-08-30 09:55:45,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660666411336652 [2023-08-30 09:55:45,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1478 transitions. [2023-08-30 09:55:45,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1478 transitions. [2023-08-30 09:55:45,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:45,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1478 transitions. [2023-08-30 09:55:45,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 211.14285714285714) internal successors, (1478), 7 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:45,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:45,694 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:45,694 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 425 flow. Second operand 7 states and 1478 transitions. [2023-08-30 09:55:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 327 transitions, 1881 flow [2023-08-30 09:55:45,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 327 transitions, 1863 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:45,736 INFO L231 Difference]: Finished difference. Result has 92 places, 135 transitions, 830 flow [2023-08-30 09:55:45,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=830, PETRI_PLACES=92, PETRI_TRANSITIONS=135} [2023-08-30 09:55:45,736 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2023-08-30 09:55:45,737 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 135 transitions, 830 flow [2023-08-30 09:55:45,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 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 09:55:45,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:45,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:45,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 09:55:45,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:55:45,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash 937480013, now seen corresponding path program 1 times [2023-08-30 09:55:45,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:45,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053621417] [2023-08-30 09:55:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:45,764 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 09:55:45,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:45,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053621417] [2023-08-30 09:55:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053621417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:45,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:45,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:45,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434878168] [2023-08-30 09:55:45,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:45,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:45,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:45,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:45,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:55:45,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 373 [2023-08-30 09:55:45,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 135 transitions, 830 flow. Second operand has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 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 09:55:45,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:45,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 373 [2023-08-30 09:55:45,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:59,363 INFO L130 PetriNetUnfolder]: 159731/232160 cut-off events. [2023-08-30 09:55:59,364 INFO L131 PetriNetUnfolder]: For 380989/381464 co-relation queries the response was YES. [2023-08-30 09:56:00,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712244 conditions, 232160 events. 159731/232160 cut-off events. For 380989/381464 co-relation queries the response was YES. Maximal size of possible extension queue 8138. Compared 1923174 event pairs, 27817 based on Foata normal form. 5988/218872 useless extension candidates. Maximal degree in co-relation 712222. Up to 137990 conditions per place. [2023-08-30 09:56:01,048 INFO L137 encePairwiseOnDemand]: 352/373 looper letters, 288 selfloop transitions, 66 changer transitions 0/363 dead transitions. [2023-08-30 09:56:01,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 363 transitions, 2654 flow [2023-08-30 09:56:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:56:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:56:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1437 transitions. [2023-08-30 09:56:01,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503638452700115 [2023-08-30 09:56:01,050 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1437 transitions. [2023-08-30 09:56:01,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1437 transitions. [2023-08-30 09:56:01,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:01,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1437 transitions. [2023-08-30 09:56:01,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:01,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:01,056 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:01,057 INFO L175 Difference]: Start difference. First operand has 92 places, 135 transitions, 830 flow. Second operand 7 states and 1437 transitions. [2023-08-30 09:56:01,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 363 transitions, 2654 flow [2023-08-30 09:56:04,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 363 transitions, 2564 flow, removed 45 selfloop flow, removed 0 redundant places. [2023-08-30 09:56:04,308 INFO L231 Difference]: Finished difference. Result has 104 places, 189 transitions, 1561 flow [2023-08-30 09:56:04,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1561, PETRI_PLACES=104, PETRI_TRANSITIONS=189} [2023-08-30 09:56:04,308 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 29 predicate places. [2023-08-30 09:56:04,308 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 189 transitions, 1561 flow [2023-08-30 09:56:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 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 09:56:04,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:04,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:04,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 09:56:04,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:56:04,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2015603947, now seen corresponding path program 1 times [2023-08-30 09:56:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:04,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107301867] [2023-08-30 09:56:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:04,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:56:04,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107301867] [2023-08-30 09:56:04,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107301867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:04,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:04,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:56:04,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026815300] [2023-08-30 09:56:04,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:04,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:56:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:04,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:56:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:56:04,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 373 [2023-08-30 09:56:04,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 189 transitions, 1561 flow. Second operand has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 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 09:56:04,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:04,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 373 [2023-08-30 09:56:04,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:22,537 INFO L130 PetriNetUnfolder]: 182425/263644 cut-off events. [2023-08-30 09:56:22,537 INFO L131 PetriNetUnfolder]: For 935116/935794 co-relation queries the response was YES. [2023-08-30 09:56:23,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951965 conditions, 263644 events. 182425/263644 cut-off events. For 935116/935794 co-relation queries the response was YES. Maximal size of possible extension queue 9048. Compared 2173690 event pairs, 41171 based on Foata normal form. 5107/253333 useless extension candidates. Maximal degree in co-relation 951935. Up to 173040 conditions per place. [2023-08-30 09:56:24,689 INFO L137 encePairwiseOnDemand]: 353/373 looper letters, 332 selfloop transitions, 85 changer transitions 0/426 dead transitions. [2023-08-30 09:56:24,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 426 transitions, 3841 flow [2023-08-30 09:56:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:56:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:56:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1433 transitions. [2023-08-30 09:56:24,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488318651857526 [2023-08-30 09:56:24,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1433 transitions. [2023-08-30 09:56:24,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1433 transitions. [2023-08-30 09:56:24,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:24,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1433 transitions. [2023-08-30 09:56:24,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.71428571428572) internal successors, (1433), 7 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:24,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:24,695 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:24,695 INFO L175 Difference]: Start difference. First operand has 104 places, 189 transitions, 1561 flow. Second operand 7 states and 1433 transitions. [2023-08-30 09:56:24,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 426 transitions, 3841 flow [2023-08-30 09:56:31,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 426 transitions, 3841 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:56:31,734 INFO L231 Difference]: Finished difference. Result has 113 places, 236 transitions, 2460 flow [2023-08-30 09:56:31,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2460, PETRI_PLACES=113, PETRI_TRANSITIONS=236} [2023-08-30 09:56:31,734 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 38 predicate places. [2023-08-30 09:56:31,734 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 236 transitions, 2460 flow [2023-08-30 09:56:31,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 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 09:56:31,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:31,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:31,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 09:56:31,735 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:56:31,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:31,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2015603948, now seen corresponding path program 1 times [2023-08-30 09:56:31,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:31,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12381129] [2023-08-30 09:56:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:31,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:56:31,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:31,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12381129] [2023-08-30 09:56:31,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12381129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:31,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:31,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:56:31,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577373056] [2023-08-30 09:56:31,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:31,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:56:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:56:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:56:31,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 373 [2023-08-30 09:56:31,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 236 transitions, 2460 flow. Second operand has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 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 09:56:31,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:31,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 373 [2023-08-30 09:56:31,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:52,746 INFO L130 PetriNetUnfolder]: 179643/263424 cut-off events. [2023-08-30 09:56:52,746 INFO L131 PetriNetUnfolder]: For 1300690/1301283 co-relation queries the response was YES. [2023-08-30 09:56:53,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011961 conditions, 263424 events. 179643/263424 cut-off events. For 1300690/1301283 co-relation queries the response was YES. Maximal size of possible extension queue 9351. Compared 2243128 event pairs, 47237 based on Foata normal form. 5557/253380 useless extension candidates. Maximal degree in co-relation 1011926. Up to 172513 conditions per place. [2023-08-30 09:56:54,763 INFO L137 encePairwiseOnDemand]: 354/373 looper letters, 358 selfloop transitions, 106 changer transitions 0/473 dead transitions. [2023-08-30 09:56:54,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 473 transitions, 4924 flow [2023-08-30 09:56:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:56:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:56:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1265 transitions. [2023-08-30 09:56:54,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565236818588025 [2023-08-30 09:56:54,765 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1265 transitions. [2023-08-30 09:56:54,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1265 transitions. [2023-08-30 09:56:54,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:54,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1265 transitions. [2023-08-30 09:56:54,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.83333333333334) internal successors, (1265), 6 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:54,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:54,767 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:54,767 INFO L175 Difference]: Start difference. First operand has 113 places, 236 transitions, 2460 flow. Second operand 6 states and 1265 transitions. [2023-08-30 09:56:54,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 473 transitions, 4924 flow [2023-08-30 09:57:06,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 473 transitions, 4924 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:57:06,296 INFO L231 Difference]: Finished difference. Result has 121 places, 282 transitions, 3439 flow [2023-08-30 09:57:06,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3439, PETRI_PLACES=121, PETRI_TRANSITIONS=282} [2023-08-30 09:57:06,296 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 46 predicate places. [2023-08-30 09:57:06,296 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 282 transitions, 3439 flow [2023-08-30 09:57:06,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 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 09:57:06,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:57:06,297 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:57:06,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 09:57:06,297 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:57:06,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:57:06,297 INFO L85 PathProgramCache]: Analyzing trace with hash -165171865, now seen corresponding path program 1 times [2023-08-30 09:57:06,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:57:06,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150335689] [2023-08-30 09:57:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:06,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:57:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:57:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:57:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150335689] [2023-08-30 09:57:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150335689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:57:06,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:57:06,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:57:06,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493183862] [2023-08-30 09:57:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:57:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:57:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:57:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:57:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:57:06,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 373 [2023-08-30 09:57:06,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 282 transitions, 3439 flow. Second operand has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:06,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:57:06,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 373 [2023-08-30 09:57:06,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:35,295 INFO L130 PetriNetUnfolder]: 215740/311246 cut-off events. [2023-08-30 09:57:35,295 INFO L131 PetriNetUnfolder]: For 2090992/2091444 co-relation queries the response was YES. [2023-08-30 09:57:36,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276507 conditions, 311246 events. 215740/311246 cut-off events. For 2090992/2091444 co-relation queries the response was YES. Maximal size of possible extension queue 10709. Compared 2603179 event pairs, 51277 based on Foata normal form. 4761/297922 useless extension candidates. Maximal degree in co-relation 1276467. Up to 208508 conditions per place. [2023-08-30 09:57:38,422 INFO L137 encePairwiseOnDemand]: 352/373 looper letters, 409 selfloop transitions, 130 changer transitions 0/547 dead transitions. [2023-08-30 09:57:38,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 547 transitions, 6725 flow [2023-08-30 09:57:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:57:38,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:57:38,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1437 transitions. [2023-08-30 09:57:38,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503638452700115 [2023-08-30 09:57:38,424 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1437 transitions. [2023-08-30 09:57:38,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1437 transitions. [2023-08-30 09:57:38,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:38,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1437 transitions. [2023-08-30 09:57:38,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:38,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:38,427 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:38,427 INFO L175 Difference]: Start difference. First operand has 121 places, 282 transitions, 3439 flow. Second operand 7 states and 1437 transitions. [2023-08-30 09:57:38,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 547 transitions, 6725 flow [2023-08-30 09:58:07,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 547 transitions, 6613 flow, removed 56 selfloop flow, removed 0 redundant places. [2023-08-30 09:58:07,320 INFO L231 Difference]: Finished difference. Result has 131 places, 339 transitions, 4846 flow [2023-08-30 09:58:07,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4846, PETRI_PLACES=131, PETRI_TRANSITIONS=339} [2023-08-30 09:58:07,321 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 56 predicate places. [2023-08-30 09:58:07,321 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 339 transitions, 4846 flow [2023-08-30 09:58:07,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:07,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:58:07,321 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:58:07,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 09:58:07,322 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:58:07,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:58:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash -165171741, now seen corresponding path program 1 times [2023-08-30 09:58:07,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:58:07,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056349719] [2023-08-30 09:58:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:58:07,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:58:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:58:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:58:07,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:58:07,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056349719] [2023-08-30 09:58:07,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056349719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:58:07,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:58:07,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:58:07,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979105360] [2023-08-30 09:58:07,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:58:07,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:58:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:58:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:58:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:58:07,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 373 [2023-08-30 09:58:07,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 339 transitions, 4846 flow. Second operand has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:07,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:58:07,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 373 [2023-08-30 09:58:07,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:58:37,260 INFO L130 PetriNetUnfolder]: 206068/298727 cut-off events. [2023-08-30 09:58:37,260 INFO L131 PetriNetUnfolder]: For 2500090/2500401 co-relation queries the response was YES. [2023-08-30 09:58:38,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285063 conditions, 298727 events. 206068/298727 cut-off events. For 2500090/2500401 co-relation queries the response was YES. Maximal size of possible extension queue 10489. Compared 2521184 event pairs, 57608 based on Foata normal form. 5089/286082 useless extension candidates. Maximal degree in co-relation 1285017. Up to 201122 conditions per place. [2023-08-30 09:58:40,079 INFO L137 encePairwiseOnDemand]: 353/373 looper letters, 431 selfloop transitions, 141 changer transitions 0/580 dead transitions. [2023-08-30 09:58:40,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 580 transitions, 7471 flow [2023-08-30 09:58:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:58:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:58:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1473 transitions. [2023-08-30 09:58:40,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641516660283417 [2023-08-30 09:58:40,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1473 transitions. [2023-08-30 09:58:40,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1473 transitions. [2023-08-30 09:58:40,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:58:40,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1473 transitions. [2023-08-30 09:58:40,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:40,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:40,084 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:40,084 INFO L175 Difference]: Start difference. First operand has 131 places, 339 transitions, 4846 flow. Second operand 7 states and 1473 transitions. [2023-08-30 09:58:40,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 580 transitions, 7471 flow [2023-08-30 09:59:12,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 580 transitions, 7471 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:59:12,745 INFO L231 Difference]: Finished difference. Result has 141 places, 358 transitions, 5539 flow [2023-08-30 09:59:12,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=4219, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5539, PETRI_PLACES=141, PETRI_TRANSITIONS=358} [2023-08-30 09:59:12,746 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2023-08-30 09:59:12,746 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 358 transitions, 5539 flow [2023-08-30 09:59:12,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:12,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:12,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:12,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 09:59:12,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:59:12,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1311601986, now seen corresponding path program 1 times [2023-08-30 09:59:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:12,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289438827] [2023-08-30 09:59:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:12,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289438827] [2023-08-30 09:59:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289438827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:12,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:59:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745063251] [2023-08-30 09:59:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:12,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:59:12,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:12,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:59:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:59:12,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 373 [2023-08-30 09:59:12,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 358 transitions, 5539 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:12,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:12,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 373 [2023-08-30 09:59:12,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand