./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.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_28-funptr_racefree.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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --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 10:07:13,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:07:13,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:07:13,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:07:13,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:07:13,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:07:13,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:07:13,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:07:13,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:07:13,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:07:13,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:07:13,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:07:13,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:07:13,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:07:13,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:07:13,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:07:13,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:07:13,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:07:13,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:07:13,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:07:13,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:07:13,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:07:13,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:07:13,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:07:13,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:07:13,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:07:13,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:07:13,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:07:13,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:07:13,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:07:13,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:07:13,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:07:13,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:07:13,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:07:13,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:07:13,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:07:13,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:07:13,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:07:13,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:07:13,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:07:13,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:07:13,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:07:13,782 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:07:13,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:07:13,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:07:13,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:07:13,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:07:13,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:07:13,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:07:13,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:07:13,787 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:07:13,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:07:13,788 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:07:13,788 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:07:13,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:07:13,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:07:13,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:07:13,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:07:13,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:07:13,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:07:13,789 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:07:13,790 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:07:13,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:07:13,790 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:07:13,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:07:13,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:07:13,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:07:13,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:07:13,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:07:13,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:07:13,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:07:13,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:07:13,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:07:13,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:07:13,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:07:13,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:07:13,793 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:07:13,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:07:13,793 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:07:13,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:07:14,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:07:14,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:07:14,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:07:14,112 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:07:14,112 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:07:14,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-30 10:07:15,336 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:07:15,566 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:07:15,567 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-30 10:07:15,585 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1f2ecdc/dbd6be7d11ea45e2bccf67b32b5b90f7/FLAGa17ddbab4 [2023-08-30 10:07:15,597 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1f2ecdc/dbd6be7d11ea45e2bccf67b32b5b90f7 [2023-08-30 10:07:15,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:07:15,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:07:15,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:07:15,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:07:15,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:07:15,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:07:15" (1/1) ... [2023-08-30 10:07:15,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d47c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:15, skipping insertion in model container [2023-08-30 10:07:15,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:07:15" (1/1) ... [2023-08-30 10:07:15,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:07:15,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:07:16,060 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_28-funptr_racefree.i[41323,41336] [2023-08-30 10:07:16,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:07:16,105 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:07:16,155 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_28-funptr_racefree.i[41323,41336] [2023-08-30 10:07:16,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:07:16,239 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 10:07:16,244 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:07:16,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16 WrapperNode [2023-08-30 10:07:16,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:07:16,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:07:16,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:07:16,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:07:16,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,313 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2023-08-30 10:07:16,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:07:16,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:07:16,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:07:16,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:07:16,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,356 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:07:16,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:07:16,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:07:16,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:07:16,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (1/1) ... [2023-08-30 10:07:16,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:07:16,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:07:16,402 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 10:07:16,424 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 10:07:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:07:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:07:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:07:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:07:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:07:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:07:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:07:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:07:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:07:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:07:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:07:16,437 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 10:07:16,539 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:07:16,541 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:07:16,750 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:07:16,757 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:07:16,757 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 10:07:16,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:07:16 BoogieIcfgContainer [2023-08-30 10:07:16,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:07:16,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:07:16,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:07:16,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:07:16,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:07:15" (1/3) ... [2023-08-30 10:07:16,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aab9434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:07:16, skipping insertion in model container [2023-08-30 10:07:16,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:07:16" (2/3) ... [2023-08-30 10:07:16,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aab9434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:07:16, skipping insertion in model container [2023-08-30 10:07:16,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:07:16" (3/3) ... [2023-08-30 10:07:16,766 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-08-30 10:07:16,772 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:07:16,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:07:16,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 10:07:16,780 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:07:16,845 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:07:16,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 134 transitions, 276 flow [2023-08-30 10:07:16,930 INFO L130 PetriNetUnfolder]: 17/170 cut-off events. [2023-08-30 10:07:16,930 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:07:16,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 170 events. 17/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 389 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-30 10:07:16,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 134 transitions, 276 flow [2023-08-30 10:07:16,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 131 transitions, 270 flow [2023-08-30 10:07:16,945 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:07:16,953 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 131 transitions, 270 flow [2023-08-30 10:07:16,962 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 131 transitions, 270 flow [2023-08-30 10:07:16,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 131 transitions, 270 flow [2023-08-30 10:07:17,019 INFO L130 PetriNetUnfolder]: 16/167 cut-off events. [2023-08-30 10:07:17,019 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:07:17,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 167 events. 16/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 387 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-30 10:07:17,025 INFO L119 LiptonReduction]: Number of co-enabled transitions 4048 [2023-08-30 10:07:20,251 INFO L134 LiptonReduction]: Checked pairs total: 7551 [2023-08-30 10:07:20,252 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-30 10:07:20,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:07:20,271 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;@3a9d109d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:07:20,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 10:07:20,275 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-30 10:07:20,275 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:07:20,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:20,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:07:20,276 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 10:07:20,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 15761654, now seen corresponding path program 1 times [2023-08-30 10:07:20,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:20,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701416245] [2023-08-30 10:07:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:20,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:20,552 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 10:07:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701416245] [2023-08-30 10:07:20,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701416245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:20,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:20,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:07:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092845930] [2023-08-30 10:07:20,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:20,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:20,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:20,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:20,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:20,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-30 10:07:20,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 96 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 10:07:20,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:20,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-30 10:07:20,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:20,726 INFO L130 PetriNetUnfolder]: 130/320 cut-off events. [2023-08-30 10:07:20,726 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:07:20,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 320 events. 130/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1535 event pairs, 0 based on Foata normal form. 11/272 useless extension candidates. Maximal degree in co-relation 583. Up to 274 conditions per place. [2023-08-30 10:07:20,733 INFO L137 encePairwiseOnDemand]: 235/249 looper letters, 40 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-30 10:07:20,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 186 flow [2023-08-30 10:07:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-30 10:07:20,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461847389558233 [2023-08-30 10:07:20,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-30 10:07:20,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-30 10:07:20,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:20,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-30 10:07:20,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:20,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:20,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:20,771 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 96 flow. Second operand 3 states and 408 transitions. [2023-08-30 10:07:20,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 186 flow [2023-08-30 10:07:20,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:07:20,776 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 82 flow [2023-08-30 10:07:20,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-30 10:07:20,780 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-08-30 10:07:20,781 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 82 flow [2023-08-30 10:07:20,781 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 10:07:20,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:20,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:20,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:07:20,782 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 10:07:20,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1252728680, now seen corresponding path program 1 times [2023-08-30 10:07:20,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:20,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811721433] [2023-08-30 10:07:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:20,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:20,916 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 10:07:20,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811721433] [2023-08-30 10:07:20,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811721433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:20,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:20,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:07:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941799197] [2023-08-30 10:07:20,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:20,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:20,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-30 10:07:20,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:20,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:20,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-30 10:07:20,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:21,057 INFO L130 PetriNetUnfolder]: 120/281 cut-off events. [2023-08-30 10:07:21,058 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 10:07:21,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 281 events. 120/281 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1068 event pairs, 40 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 573. Up to 172 conditions per place. [2023-08-30 10:07:21,059 INFO L137 encePairwiseOnDemand]: 245/249 looper letters, 35 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 10:07:21,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 177 flow [2023-08-30 10:07:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-30 10:07:21,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220883534136547 [2023-08-30 10:07:21,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-30 10:07:21,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-30 10:07:21,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:21,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-30 10:07:21,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,065 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 82 flow. Second operand 3 states and 390 transitions. [2023-08-30 10:07:21,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 177 flow [2023-08-30 10:07:21,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:21,067 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 78 flow [2023-08-30 10:07:21,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=78, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-30 10:07:21,068 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-30 10:07:21,068 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 78 flow [2023-08-30 10:07:21,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:21,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:21,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:07:21,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:07:21,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1066771777, now seen corresponding path program 1 times [2023-08-30 10:07:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:21,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863541482] [2023-08-30 10:07:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:21,160 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 10:07:21,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:21,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863541482] [2023-08-30 10:07:21,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863541482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:21,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:21,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:07:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221123370] [2023-08-30 10:07:21,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:21,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:07:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:21,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:07:21,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:07:21,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-30 10:07:21,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:21,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-30 10:07:21,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:21,255 INFO L130 PetriNetUnfolder]: 110/260 cut-off events. [2023-08-30 10:07:21,256 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 10:07:21,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 260 events. 110/260 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 964 event pairs, 40 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 527. Up to 97 conditions per place. [2023-08-30 10:07:21,258 INFO L137 encePairwiseOnDemand]: 245/249 looper letters, 42 selfloop transitions, 3 changer transitions 1/50 dead transitions. [2023-08-30 10:07:21,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 214 flow [2023-08-30 10:07:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:07:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:07:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions. [2023-08-30 10:07:21,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170682730923695 [2023-08-30 10:07:21,260 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions. [2023-08-30 10:07:21,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions. [2023-08-30 10:07:21,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:21,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions. [2023-08-30 10:07:21,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 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 10:07:21,265 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 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 10:07:21,265 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 78 flow. Second operand 4 states and 515 transitions. [2023-08-30 10:07:21,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 214 flow [2023-08-30 10:07:21,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:21,267 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 78 flow [2023-08-30 10:07:21,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-30 10:07:21,268 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-30 10:07:21,268 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 78 flow [2023-08-30 10:07:21,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:21,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:21,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:07:21,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:07:21,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:21,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1066771764, now seen corresponding path program 1 times [2023-08-30 10:07:21,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:21,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530214726] [2023-08-30 10:07:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:21,352 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 10:07:21,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:21,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530214726] [2023-08-30 10:07:21,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530214726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:21,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:21,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:07:21,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289378200] [2023-08-30 10:07:21,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:21,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:07:21,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:21,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:07:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:07:21,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-30 10:07:21,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:21,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-30 10:07:21,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:21,453 INFO L130 PetriNetUnfolder]: 100/239 cut-off events. [2023-08-30 10:07:21,456 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 10:07:21,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 239 events. 100/239 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 859 event pairs, 40 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 494. Up to 97 conditions per place. [2023-08-30 10:07:21,457 INFO L137 encePairwiseOnDemand]: 245/249 looper letters, 40 selfloop transitions, 3 changer transitions 3/49 dead transitions. [2023-08-30 10:07:21,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 212 flow [2023-08-30 10:07:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:07:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:07:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 514 transitions. [2023-08-30 10:07:21,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160642570281124 [2023-08-30 10:07:21,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 514 transitions. [2023-08-30 10:07:21,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 514 transitions. [2023-08-30 10:07:21,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:21,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 514 transitions. [2023-08-30 10:07:21,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.5) internal successors, (514), 4 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 10:07:21,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 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 10:07:21,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 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 10:07:21,470 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 78 flow. Second operand 4 states and 514 transitions. [2023-08-30 10:07:21,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 212 flow [2023-08-30 10:07:21,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:07:21,472 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 72 flow [2023-08-30 10:07:21,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-30 10:07:21,474 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-30 10:07:21,475 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 72 flow [2023-08-30 10:07:21,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:21,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:21,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:07:21,476 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 10:07:21,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash -774705568, now seen corresponding path program 1 times [2023-08-30 10:07:21,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:21,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318088856] [2023-08-30 10:07:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:21,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:21,571 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 10:07:21,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318088856] [2023-08-30 10:07:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318088856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:07:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898955537] [2023-08-30 10:07:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:21,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:07:21,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:07:21,577 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 10:07:21,612 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 10:07:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:21,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:07:21,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:07:21,770 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 10:07:21,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:07:21,818 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 10:07:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898955537] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:07:21,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:07:21,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:07:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100296888] [2023-08-30 10:07:21,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:07:21,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:21,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:21,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 249 [2023-08-30 10:07:21,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 120.14285714285714) internal successors, (841), 7 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:21,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 249 [2023-08-30 10:07:21,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:21,875 INFO L130 PetriNetUnfolder]: 18/53 cut-off events. [2023-08-30 10:07:21,876 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:07:21,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 53 events. 18/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 10/63 useless extension candidates. Maximal degree in co-relation 111. Up to 38 conditions per place. [2023-08-30 10:07:21,876 INFO L137 encePairwiseOnDemand]: 246/249 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-30 10:07:21,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 111 flow [2023-08-30 10:07:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:07:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:07:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 484 transitions. [2023-08-30 10:07:21,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859437751004016 [2023-08-30 10:07:21,878 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 484 transitions. [2023-08-30 10:07:21,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 484 transitions. [2023-08-30 10:07:21,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:21,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 484 transitions. [2023-08-30 10:07:21,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 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 10:07:21,883 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 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 10:07:21,883 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 72 flow. Second operand 4 states and 484 transitions. [2023-08-30 10:07:21,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 111 flow [2023-08-30 10:07:21,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 26 transitions, 101 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:07:21,884 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-08-30 10:07:21,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-08-30 10:07:21,886 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -17 predicate places. [2023-08-30 10:07:21,887 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-08-30 10:07:21,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.14285714285714) internal successors, (841), 7 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:21,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-30 10:07:21,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-30 10:07:21,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-30 10:07:21,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-30 10:07:21,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-30 10:07:21,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-30 10:07:21,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-30 10:07:21,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-08-30 10:07:21,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-30 10:07:21,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-30 10:07:21,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-30 10:07:21,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-30 10:07:21,911 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 10:07:22,105 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 10:07:22,106 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 10:07:22,108 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 10:07:22,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 134 transitions, 276 flow [2023-08-30 10:07:22,126 INFO L130 PetriNetUnfolder]: 17/170 cut-off events. [2023-08-30 10:07:22,126 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:07:22,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 170 events. 17/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 389 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-30 10:07:22,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 134 transitions, 276 flow [2023-08-30 10:07:22,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 125 transitions, 255 flow [2023-08-30 10:07:22,128 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:07:22,128 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 125 transitions, 255 flow [2023-08-30 10:07:22,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 125 transitions, 255 flow [2023-08-30 10:07:22,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 125 transitions, 255 flow [2023-08-30 10:07:22,149 INFO L130 PetriNetUnfolder]: 16/161 cut-off events. [2023-08-30 10:07:22,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:07:22,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 161 events. 16/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 378 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-30 10:07:22,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 4048 [2023-08-30 10:07:24,992 INFO L134 LiptonReduction]: Checked pairs total: 7158 [2023-08-30 10:07:24,992 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-30 10:07:24,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:07:24,997 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;@3a9d109d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:07:25,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:07:25,002 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-08-30 10:07:25,003 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:07:25,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:25,003 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:07:25,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:07:25,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1159846719, now seen corresponding path program 1 times [2023-08-30 10:07:25,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:25,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493243116] [2023-08-30 10:07:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:25,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:07:25,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:07:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:07:25,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:07:25,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:07:25,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:07:25,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:07:25,042 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:07:25,043 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:07:25,043 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:07:25,043 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:07:25,062 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:07:25,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 10:07:25,108 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-30 10:07:25,109 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:07:25,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 863 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-08-30 10:07:25,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 10:07:25,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 180 transitions, 378 flow [2023-08-30 10:07:25,112 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:07:25,112 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 180 transitions, 378 flow [2023-08-30 10:07:25,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 180 transitions, 378 flow [2023-08-30 10:07:25,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 10:07:25,137 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-30 10:07:25,137 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:07:25,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 863 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-08-30 10:07:25,146 INFO L119 LiptonReduction]: Number of co-enabled transitions 13640 [2023-08-30 10:07:28,023 INFO L134 LiptonReduction]: Checked pairs total: 34593 [2023-08-30 10:07:28,023 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-08-30 10:07:28,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:07:28,026 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;@3a9d109d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:07:28,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 10:07:28,028 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 10:07:28,028 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:07:28,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:28,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:07:28,028 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 10:07:28,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash 939013112, now seen corresponding path program 1 times [2023-08-30 10:07:28,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:28,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138615843] [2023-08-30 10:07:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:28,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:28,061 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 10:07:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:28,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138615843] [2023-08-30 10:07:28,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138615843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:28,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:28,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:07:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380400532] [2023-08-30 10:07:28,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:28,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:28,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 318 [2023-08-30 10:07:28,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 77 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:28,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:28,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 318 [2023-08-30 10:07:28,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:29,060 INFO L130 PetriNetUnfolder]: 8133/13065 cut-off events. [2023-08-30 10:07:29,060 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-08-30 10:07:29,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25981 conditions, 13065 events. 8133/13065 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 84844 event pairs, 3859 based on Foata normal form. 511/10166 useless extension candidates. Maximal degree in co-relation 2496. Up to 12770 conditions per place. [2023-08-30 10:07:29,130 INFO L137 encePairwiseOnDemand]: 298/318 looper letters, 70 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-30 10:07:29,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 320 flow [2023-08-30 10:07:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-08-30 10:07:29,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2023-08-30 10:07:29,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-08-30 10:07:29,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-08-30 10:07:29,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:29,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-08-30 10:07:29,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:29,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:29,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:29,137 INFO L175 Difference]: Start difference. First operand has 65 places, 77 transitions, 172 flow. Second operand 3 states and 558 transitions. [2023-08-30 10:07:29,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 320 flow [2023-08-30 10:07:29,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:07:29,141 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 156 flow [2023-08-30 10:07:29,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-30 10:07:29,143 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2023-08-30 10:07:29,143 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 156 flow [2023-08-30 10:07:29,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:29,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:29,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:07:29,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:07:29,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:29,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:29,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1544064659, now seen corresponding path program 1 times [2023-08-30 10:07:29,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:29,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293637479] [2023-08-30 10:07:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:29,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:29,174 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 10:07:29,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:29,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293637479] [2023-08-30 10:07:29,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293637479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:29,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:29,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:07:29,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509011204] [2023-08-30 10:07:29,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:29,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:29,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:29,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:29,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 318 [2023-08-30 10:07:29,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:29,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:29,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 318 [2023-08-30 10:07:29,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:30,082 INFO L130 PetriNetUnfolder]: 7556/12322 cut-off events. [2023-08-30 10:07:30,082 INFO L131 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2023-08-30 10:07:30,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25301 conditions, 12322 events. 7556/12322 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 82302 event pairs, 1458 based on Foata normal form. 0/9692 useless extension candidates. Maximal degree in co-relation 24517. Up to 9494 conditions per place. [2023-08-30 10:07:30,139 INFO L137 encePairwiseOnDemand]: 314/318 looper letters, 84 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-08-30 10:07:30,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 95 transitions, 396 flow [2023-08-30 10:07:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-30 10:07:30,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733752620545073 [2023-08-30 10:07:30,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-30 10:07:30,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-30 10:07:30,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:30,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-30 10:07:30,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:30,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:30,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:30,145 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 156 flow. Second operand 3 states and 547 transitions. [2023-08-30 10:07:30,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 95 transitions, 396 flow [2023-08-30 10:07:30,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:07:30,149 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 166 flow [2023-08-30 10:07:30,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-08-30 10:07:30,150 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2023-08-30 10:07:30,150 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 166 flow [2023-08-30 10:07:30,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:30,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:30,150 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:07:30,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:07:30,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:30,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1544064636, now seen corresponding path program 1 times [2023-08-30 10:07:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:30,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791817384] [2023-08-30 10:07:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:30,180 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 10:07:30,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:30,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791817384] [2023-08-30 10:07:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791817384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:30,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:30,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:07:30,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001550152] [2023-08-30 10:07:30,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:30,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:30,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:30,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:30,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:30,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 318 [2023-08-30 10:07:30,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:30,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:30,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 318 [2023-08-30 10:07:30,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:30,935 INFO L130 PetriNetUnfolder]: 6979/11202 cut-off events. [2023-08-30 10:07:30,935 INFO L131 PetriNetUnfolder]: For 2978/2978 co-relation queries the response was YES. [2023-08-30 10:07:30,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23947 conditions, 11202 events. 6979/11202 cut-off events. For 2978/2978 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 67603 event pairs, 6961 based on Foata normal form. 306/9300 useless extension candidates. Maximal degree in co-relation 18680. Up to 11022 conditions per place. [2023-08-30 10:07:30,992 INFO L137 encePairwiseOnDemand]: 316/318 looper letters, 53 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2023-08-30 10:07:30,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 270 flow [2023-08-30 10:07:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-30 10:07:30,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539832285115304 [2023-08-30 10:07:30,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-30 10:07:30,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-30 10:07:30,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:30,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-30 10:07:30,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:30,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:30,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:30,998 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 166 flow. Second operand 3 states and 515 transitions. [2023-08-30 10:07:30,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 270 flow [2023-08-30 10:07:31,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:07:31,001 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 160 flow [2023-08-30 10:07:31,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2023-08-30 10:07:31,003 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2023-08-30 10:07:31,003 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 160 flow [2023-08-30 10:07:31,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:31,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:31,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:31,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:07:31,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:31,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:31,005 INFO L85 PathProgramCache]: Analyzing trace with hash 973562324, now seen corresponding path program 1 times [2023-08-30 10:07:31,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:31,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081322718] [2023-08-30 10:07:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:31,121 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 10:07:31,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:31,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081322718] [2023-08-30 10:07:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081322718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:31,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:31,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:07:31,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799177486] [2023-08-30 10:07:31,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:31,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:31,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:31,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 318 [2023-08-30 10:07:31,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:31,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:31,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 318 [2023-08-30 10:07:31,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:31,933 INFO L130 PetriNetUnfolder]: 6655/10670 cut-off events. [2023-08-30 10:07:31,933 INFO L131 PetriNetUnfolder]: For 1640/1640 co-relation queries the response was YES. [2023-08-30 10:07:31,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22557 conditions, 10670 events. 6655/10670 cut-off events. For 1640/1640 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 63314 event pairs, 2382 based on Foata normal form. 0/8883 useless extension candidates. Maximal degree in co-relation 22545. Up to 8843 conditions per place. [2023-08-30 10:07:31,975 INFO L137 encePairwiseOnDemand]: 311/318 looper letters, 79 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-30 10:07:31,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 395 flow [2023-08-30 10:07:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-08-30 10:07:31,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681341719077568 [2023-08-30 10:07:31,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-08-30 10:07:31,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-08-30 10:07:31,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:31,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-08-30 10:07:31,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:31,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:31,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:31,982 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 160 flow. Second operand 3 states and 542 transitions. [2023-08-30 10:07:31,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 395 flow [2023-08-30 10:07:31,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:07:31,986 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 184 flow [2023-08-30 10:07:31,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-30 10:07:31,987 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2023-08-30 10:07:31,987 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 184 flow [2023-08-30 10:07:31,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:31,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:31,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:31,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:07:31,988 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 10:07:31,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:31,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1135169951, now seen corresponding path program 1 times [2023-08-30 10:07:31,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:31,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505099733] [2023-08-30 10:07:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:31,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:32,050 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 10:07:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:32,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505099733] [2023-08-30 10:07:32,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505099733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:32,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:32,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:07:32,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019676454] [2023-08-30 10:07:32,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:32,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:07:32,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:32,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:07:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:07:32,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 318 [2023-08-30 10:07:32,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:32,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:32,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 318 [2023-08-30 10:07:32,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:33,095 INFO L130 PetriNetUnfolder]: 7709/12465 cut-off events. [2023-08-30 10:07:33,095 INFO L131 PetriNetUnfolder]: For 2362/2362 co-relation queries the response was YES. [2023-08-30 10:07:33,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27440 conditions, 12465 events. 7709/12465 cut-off events. For 2362/2362 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 77927 event pairs, 1547 based on Foata normal form. 0/10822 useless extension candidates. Maximal degree in co-relation 27426. Up to 6359 conditions per place. [2023-08-30 10:07:33,244 INFO L137 encePairwiseOnDemand]: 303/318 looper letters, 190 selfloop transitions, 19 changer transitions 0/215 dead transitions. [2023-08-30 10:07:33,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 215 transitions, 1013 flow [2023-08-30 10:07:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:07:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:07:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1245 transitions. [2023-08-30 10:07:33,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592991913746631 [2023-08-30 10:07:33,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1245 transitions. [2023-08-30 10:07:33,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1245 transitions. [2023-08-30 10:07:33,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:33,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1245 transitions. [2023-08-30 10:07:33,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.85714285714286) internal successors, (1245), 7 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 10:07:33,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:33,256 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:33,256 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 184 flow. Second operand 7 states and 1245 transitions. [2023-08-30 10:07:33,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 215 transitions, 1013 flow [2023-08-30 10:07:33,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 215 transitions, 1009 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:07:33,265 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 340 flow [2023-08-30 10:07:33,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-08-30 10:07:33,267 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2023-08-30 10:07:33,267 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 340 flow [2023-08-30 10:07:33,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:33,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:33,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:33,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:07:33,268 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 10:07:33,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1135169898, now seen corresponding path program 1 times [2023-08-30 10:07:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916848931] [2023-08-30 10:07:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:33,352 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 10:07:33,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916848931] [2023-08-30 10:07:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916848931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:33,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:33,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:07:33,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328935920] [2023-08-30 10:07:33,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:33,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:07:33,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:07:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:07:33,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 318 [2023-08-30 10:07:33,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:33,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:33,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 318 [2023-08-30 10:07:33,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:34,245 INFO L130 PetriNetUnfolder]: 7315/12004 cut-off events. [2023-08-30 10:07:34,245 INFO L131 PetriNetUnfolder]: For 6841/6841 co-relation queries the response was YES. [2023-08-30 10:07:34,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31167 conditions, 12004 events. 7315/12004 cut-off events. For 6841/6841 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 76140 event pairs, 1475 based on Foata normal form. 351/11843 useless extension candidates. Maximal degree in co-relation 31147. Up to 6462 conditions per place. [2023-08-30 10:07:34,313 INFO L137 encePairwiseOnDemand]: 303/318 looper letters, 193 selfloop transitions, 24 changer transitions 0/223 dead transitions. [2023-08-30 10:07:34,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 223 transitions, 1210 flow [2023-08-30 10:07:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:07:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:07:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1242 transitions. [2023-08-30 10:07:34,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579514824797843 [2023-08-30 10:07:34,317 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1242 transitions. [2023-08-30 10:07:34,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1242 transitions. [2023-08-30 10:07:34,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:34,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1242 transitions. [2023-08-30 10:07:34,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.42857142857142) internal successors, (1242), 7 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:34,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:34,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:34,390 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 340 flow. Second operand 7 states and 1242 transitions. [2023-08-30 10:07:34,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 223 transitions, 1210 flow [2023-08-30 10:07:34,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 223 transitions, 1202 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:07:34,429 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 526 flow [2023-08-30 10:07:34,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=89, PETRI_TRANSITIONS=91} [2023-08-30 10:07:34,430 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2023-08-30 10:07:34,430 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 526 flow [2023-08-30 10:07:34,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:34,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:34,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:34,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:07:34,431 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 10:07:34,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1030593886, now seen corresponding path program 1 times [2023-08-30 10:07:34,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:34,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858547608] [2023-08-30 10:07:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:34,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:34,510 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 10:07:34,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858547608] [2023-08-30 10:07:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858547608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:34,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:34,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:07:34,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620725202] [2023-08-30 10:07:34,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:34,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:07:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:34,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:07:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:07:34,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 318 [2023-08-30 10:07:34,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 526 flow. Second operand has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:34,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:34,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 318 [2023-08-30 10:07:34,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:35,517 INFO L130 PetriNetUnfolder]: 7975/12926 cut-off events. [2023-08-30 10:07:35,517 INFO L131 PetriNetUnfolder]: For 17538/17538 co-relation queries the response was YES. [2023-08-30 10:07:35,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37301 conditions, 12926 events. 7975/12926 cut-off events. For 17538/17538 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 81317 event pairs, 1731 based on Foata normal form. 282/12662 useless extension candidates. Maximal degree in co-relation 37276. Up to 7320 conditions per place. [2023-08-30 10:07:35,574 INFO L137 encePairwiseOnDemand]: 304/318 looper letters, 198 selfloop transitions, 28 changer transitions 0/232 dead transitions. [2023-08-30 10:07:35,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 232 transitions, 1487 flow [2023-08-30 10:07:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:07:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:07:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1232 transitions. [2023-08-30 10:07:35,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534591194968553 [2023-08-30 10:07:35,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1232 transitions. [2023-08-30 10:07:35,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1232 transitions. [2023-08-30 10:07:35,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:35,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1232 transitions. [2023-08-30 10:07:35,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:35,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:35,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:35,586 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 526 flow. Second operand 7 states and 1232 transitions. [2023-08-30 10:07:35,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 232 transitions, 1487 flow [2023-08-30 10:07:35,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 232 transitions, 1470 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:35,715 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 788 flow [2023-08-30 10:07:35,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=788, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2023-08-30 10:07:35,716 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2023-08-30 10:07:35,716 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 788 flow [2023-08-30 10:07:35,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:35,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:35,717 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:35,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:07:35,717 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 10:07:35,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1030593850, now seen corresponding path program 1 times [2023-08-30 10:07:35,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:35,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730642994] [2023-08-30 10:07:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:35,781 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 10:07:35,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:35,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730642994] [2023-08-30 10:07:35,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730642994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:35,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:35,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:07:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585913105] [2023-08-30 10:07:35,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:35,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:07:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:07:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:07:35,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 318 [2023-08-30 10:07:35,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:35,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:35,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 318 [2023-08-30 10:07:35,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:36,901 INFO L130 PetriNetUnfolder]: 7406/12050 cut-off events. [2023-08-30 10:07:36,901 INFO L131 PetriNetUnfolder]: For 26038/26038 co-relation queries the response was YES. [2023-08-30 10:07:36,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37519 conditions, 12050 events. 7406/12050 cut-off events. For 26038/26038 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 75100 event pairs, 1731 based on Foata normal form. 282/11814 useless extension candidates. Maximal degree in co-relation 37488. Up to 7014 conditions per place. [2023-08-30 10:07:36,967 INFO L137 encePairwiseOnDemand]: 304/318 looper letters, 191 selfloop transitions, 28 changer transitions 0/225 dead transitions. [2023-08-30 10:07:36,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 225 transitions, 1530 flow [2023-08-30 10:07:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:07:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:07:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1229 transitions. [2023-08-30 10:07:36,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521114106019767 [2023-08-30 10:07:36,971 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1229 transitions. [2023-08-30 10:07:36,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1229 transitions. [2023-08-30 10:07:36,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:36,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1229 transitions. [2023-08-30 10:07:36,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.57142857142858) internal successors, (1229), 7 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:36,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:36,979 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:36,979 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 788 flow. Second operand 7 states and 1229 transitions. [2023-08-30 10:07:36,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 225 transitions, 1530 flow [2023-08-30 10:07:37,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 225 transitions, 1493 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:37,196 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 749 flow [2023-08-30 10:07:37,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=749, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2023-08-30 10:07:37,196 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 37 predicate places. [2023-08-30 10:07:37,197 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 749 flow [2023-08-30 10:07:37,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:37,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:37,197 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, 1, 1] [2023-08-30 10:07:37,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:07:37,198 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:37,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:37,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1333019981, now seen corresponding path program 1 times [2023-08-30 10:07:37,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:37,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659546922] [2023-08-30 10:07:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:37,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:37,291 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 10:07:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:37,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659546922] [2023-08-30 10:07:37,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659546922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:37,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:37,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:07:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562203317] [2023-08-30 10:07:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:37,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 318 [2023-08-30 10:07:37,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 749 flow. Second operand has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:37,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:37,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 318 [2023-08-30 10:07:37,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:38,698 INFO L130 PetriNetUnfolder]: 8195/13396 cut-off events. [2023-08-30 10:07:38,698 INFO L131 PetriNetUnfolder]: For 26497/26497 co-relation queries the response was YES. [2023-08-30 10:07:38,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42427 conditions, 13396 events. 8195/13396 cut-off events. For 26497/26497 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 85915 event pairs, 1369 based on Foata normal form. 84/12881 useless extension candidates. Maximal degree in co-relation 42396. Up to 5762 conditions per place. [2023-08-30 10:07:38,772 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 298 selfloop transitions, 42 changer transitions 0/346 dead transitions. [2023-08-30 10:07:38,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 346 transitions, 2265 flow [2023-08-30 10:07:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:07:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:07:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2032 transitions. [2023-08-30 10:07:38,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324947589098532 [2023-08-30 10:07:38,778 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2032 transitions. [2023-08-30 10:07:38,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2032 transitions. [2023-08-30 10:07:38,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:38,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2032 transitions. [2023-08-30 10:07:38,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 169.33333333333334) internal successors, (2032), 12 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:38,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 318.0) internal successors, (4134), 13 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:38,789 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 318.0) internal successors, (4134), 13 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:38,789 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 749 flow. Second operand 12 states and 2032 transitions. [2023-08-30 10:07:38,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 346 transitions, 2265 flow [2023-08-30 10:07:38,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 346 transitions, 2252 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:38,945 INFO L231 Difference]: Finished difference. Result has 112 places, 115 transitions, 975 flow [2023-08-30 10:07:38,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=975, PETRI_PLACES=112, PETRI_TRANSITIONS=115} [2023-08-30 10:07:38,946 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 47 predicate places. [2023-08-30 10:07:38,946 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 115 transitions, 975 flow [2023-08-30 10:07:38,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:38,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:38,947 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, 1, 1] [2023-08-30 10:07:38,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:07:38,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:38,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash -39744537, now seen corresponding path program 1 times [2023-08-30 10:07:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:38,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020427174] [2023-08-30 10:07:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:38,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:39,043 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 10:07:39,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:39,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020427174] [2023-08-30 10:07:39,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020427174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:39,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:39,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:07:39,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245162112] [2023-08-30 10:07:39,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:39,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:39,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:39,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:39,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:39,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 318 [2023-08-30 10:07:39,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 115 transitions, 975 flow. Second operand has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:39,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:39,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 318 [2023-08-30 10:07:39,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:40,209 INFO L130 PetriNetUnfolder]: 8154/13418 cut-off events. [2023-08-30 10:07:40,209 INFO L131 PetriNetUnfolder]: For 33781/33781 co-relation queries the response was YES. [2023-08-30 10:07:40,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44859 conditions, 13418 events. 8154/13418 cut-off events. For 33781/33781 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 87140 event pairs, 1251 based on Foata normal form. 84/12895 useless extension candidates. Maximal degree in co-relation 44825. Up to 5848 conditions per place. [2023-08-30 10:07:40,276 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 270 selfloop transitions, 43 changer transitions 0/319 dead transitions. [2023-08-30 10:07:40,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 319 transitions, 2262 flow [2023-08-30 10:07:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:07:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:07:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1709 transitions. [2023-08-30 10:07:40,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374213836477988 [2023-08-30 10:07:40,280 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1709 transitions. [2023-08-30 10:07:40,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1709 transitions. [2023-08-30 10:07:40,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:40,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1709 transitions. [2023-08-30 10:07:40,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 170.9) internal successors, (1709), 10 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:40,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 318.0) internal successors, (3498), 11 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:40,290 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 318.0) internal successors, (3498), 11 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:40,290 INFO L175 Difference]: Start difference. First operand has 112 places, 115 transitions, 975 flow. Second operand 10 states and 1709 transitions. [2023-08-30 10:07:40,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 319 transitions, 2262 flow [2023-08-30 10:07:40,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 319 transitions, 2224 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 10:07:40,605 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 1068 flow [2023-08-30 10:07:40,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1068, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2023-08-30 10:07:40,605 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 53 predicate places. [2023-08-30 10:07:40,606 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 1068 flow [2023-08-30 10:07:40,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:40,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:40,606 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, 1, 1] [2023-08-30 10:07:40,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:07:40,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:40,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash -116958495, now seen corresponding path program 1 times [2023-08-30 10:07:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:40,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874026357] [2023-08-30 10:07:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:40,684 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 10:07:40,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874026357] [2023-08-30 10:07:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874026357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:40,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:07:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881306435] [2023-08-30 10:07:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:40,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:40,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 318 [2023-08-30 10:07:40,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 1068 flow. Second operand has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:40,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:40,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 318 [2023-08-30 10:07:40,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:42,009 INFO L130 PetriNetUnfolder]: 8763/14325 cut-off events. [2023-08-30 10:07:42,010 INFO L131 PetriNetUnfolder]: For 45301/45301 co-relation queries the response was YES. [2023-08-30 10:07:42,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50109 conditions, 14325 events. 8763/14325 cut-off events. For 45301/45301 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 92731 event pairs, 1781 based on Foata normal form. 150/13832 useless extension candidates. Maximal degree in co-relation 50072. Up to 8039 conditions per place. [2023-08-30 10:07:42,201 INFO L137 encePairwiseOnDemand]: 304/318 looper letters, 307 selfloop transitions, 46 changer transitions 0/359 dead transitions. [2023-08-30 10:07:42,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 359 transitions, 2590 flow [2023-08-30 10:07:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:07:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:07:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2315 transitions. [2023-08-30 10:07:42,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199910152740341 [2023-08-30 10:07:42,207 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2315 transitions. [2023-08-30 10:07:42,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2315 transitions. [2023-08-30 10:07:42,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:42,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2315 transitions. [2023-08-30 10:07:42,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 165.35714285714286) internal successors, (2315), 14 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:42,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 318.0) internal successors, (4770), 15 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:42,218 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 318.0) internal successors, (4770), 15 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:42,218 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 1068 flow. Second operand 14 states and 2315 transitions. [2023-08-30 10:07:42,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 359 transitions, 2590 flow [2023-08-30 10:07:42,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 359 transitions, 2488 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-30 10:07:42,492 INFO L231 Difference]: Finished difference. Result has 127 places, 131 transitions, 1276 flow [2023-08-30 10:07:42,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1276, PETRI_PLACES=127, PETRI_TRANSITIONS=131} [2023-08-30 10:07:42,493 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 62 predicate places. [2023-08-30 10:07:42,493 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 131 transitions, 1276 flow [2023-08-30 10:07:42,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:42,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:42,494 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, 1, 1] [2023-08-30 10:07:42,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 10:07:42,494 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 10:07:42,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash -39780532, now seen corresponding path program 1 times [2023-08-30 10:07:42,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:42,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045641413] [2023-08-30 10:07:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:42,571 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 10:07:42,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045641413] [2023-08-30 10:07:42,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045641413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:42,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:42,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:07:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043091929] [2023-08-30 10:07:42,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:42,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:42,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 318 [2023-08-30 10:07:42,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 131 transitions, 1276 flow. Second operand has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:42,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:42,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 318 [2023-08-30 10:07:42,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:43,923 INFO L130 PetriNetUnfolder]: 8559/14038 cut-off events. [2023-08-30 10:07:43,923 INFO L131 PetriNetUnfolder]: For 51372/51372 co-relation queries the response was YES. [2023-08-30 10:07:43,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49922 conditions, 14038 events. 8559/14038 cut-off events. For 51372/51372 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 91492 event pairs, 1239 based on Foata normal form. 150/13554 useless extension candidates. Maximal degree in co-relation 49883. Up to 5760 conditions per place. [2023-08-30 10:07:44,023 INFO L137 encePairwiseOnDemand]: 304/318 looper letters, 325 selfloop transitions, 67 changer transitions 0/398 dead transitions. [2023-08-30 10:07:44,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 398 transitions, 2802 flow [2023-08-30 10:07:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:07:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:07:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2643 transitions. [2023-08-30 10:07:44,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194575471698113 [2023-08-30 10:07:44,031 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2643 transitions. [2023-08-30 10:07:44,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2643 transitions. [2023-08-30 10:07:44,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:44,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2643 transitions. [2023-08-30 10:07:44,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 165.1875) internal successors, (2643), 16 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:44,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 318.0) internal successors, (5406), 17 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:44,043 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 318.0) internal successors, (5406), 17 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:44,043 INFO L175 Difference]: Start difference. First operand has 127 places, 131 transitions, 1276 flow. Second operand 16 states and 2643 transitions. [2023-08-30 10:07:44,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 398 transitions, 2802 flow [2023-08-30 10:07:44,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 398 transitions, 2665 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-08-30 10:07:44,439 INFO L231 Difference]: Finished difference. Result has 134 places, 135 transitions, 1279 flow [2023-08-30 10:07:44,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1279, PETRI_PLACES=134, PETRI_TRANSITIONS=135} [2023-08-30 10:07:44,439 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 69 predicate places. [2023-08-30 10:07:44,440 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 135 transitions, 1279 flow [2023-08-30 10:07:44,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:44,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:44,441 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, 1, 1] [2023-08-30 10:07:44,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:07:44,441 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:44,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:44,442 INFO L85 PathProgramCache]: Analyzing trace with hash 835995547, now seen corresponding path program 1 times [2023-08-30 10:07:44,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:44,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762551421] [2023-08-30 10:07:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:44,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:44,529 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 10:07:44,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:44,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762551421] [2023-08-30 10:07:44,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762551421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:44,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:44,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:07:44,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932603949] [2023-08-30 10:07:44,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:44,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:44,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:44,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:44,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:44,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 318 [2023-08-30 10:07:44,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 135 transitions, 1279 flow. Second operand has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:44,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:44,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 318 [2023-08-30 10:07:44,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:45,949 INFO L130 PetriNetUnfolder]: 9474/15625 cut-off events. [2023-08-30 10:07:45,949 INFO L131 PetriNetUnfolder]: For 56264/56264 co-relation queries the response was YES. [2023-08-30 10:07:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56662 conditions, 15625 events. 9474/15625 cut-off events. For 56264/56264 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 104170 event pairs, 1820 based on Foata normal form. 84/14979 useless extension candidates. Maximal degree in co-relation 56624. Up to 7837 conditions per place. [2023-08-30 10:07:46,032 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 281 selfloop transitions, 54 changer transitions 0/341 dead transitions. [2023-08-30 10:07:46,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 341 transitions, 2775 flow [2023-08-30 10:07:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:07:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:07:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1704 transitions. [2023-08-30 10:07:46,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358490566037736 [2023-08-30 10:07:46,035 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1704 transitions. [2023-08-30 10:07:46,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1704 transitions. [2023-08-30 10:07:46,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:46,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1704 transitions. [2023-08-30 10:07:46,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 170.4) internal successors, (1704), 10 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:46,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 318.0) internal successors, (3498), 11 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:46,042 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 318.0) internal successors, (3498), 11 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:46,043 INFO L175 Difference]: Start difference. First operand has 134 places, 135 transitions, 1279 flow. Second operand 10 states and 1704 transitions. [2023-08-30 10:07:46,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 341 transitions, 2775 flow [2023-08-30 10:07:46,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 341 transitions, 2626 flow, removed 36 selfloop flow, removed 8 redundant places. [2023-08-30 10:07:46,379 INFO L231 Difference]: Finished difference. Result has 137 places, 150 transitions, 1507 flow [2023-08-30 10:07:46,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1507, PETRI_PLACES=137, PETRI_TRANSITIONS=150} [2023-08-30 10:07:46,380 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 72 predicate places. [2023-08-30 10:07:46,380 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 150 transitions, 1507 flow [2023-08-30 10:07:46,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:46,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:46,380 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, 1, 1] [2023-08-30 10:07:46,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:07:46,385 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 10:07:46,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:46,385 INFO L85 PathProgramCache]: Analyzing trace with hash 835995567, now seen corresponding path program 1 times [2023-08-30 10:07:46,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:46,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428774658] [2023-08-30 10:07:46,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:46,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:46,466 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 10:07:46,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:46,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428774658] [2023-08-30 10:07:46,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428774658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:46,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:46,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:07:46,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034060384] [2023-08-30 10:07:46,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:46,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:46,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 318 [2023-08-30 10:07:46,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 150 transitions, 1507 flow. Second operand has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:46,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:46,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 318 [2023-08-30 10:07:46,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:47,942 INFO L130 PetriNetUnfolder]: 9433/15652 cut-off events. [2023-08-30 10:07:47,942 INFO L131 PetriNetUnfolder]: For 55604/55604 co-relation queries the response was YES. [2023-08-30 10:07:48,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56774 conditions, 15652 events. 9433/15652 cut-off events. For 55604/55604 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 105372 event pairs, 1793 based on Foata normal form. 84/14998 useless extension candidates. Maximal degree in co-relation 56736. Up to 7923 conditions per place. [2023-08-30 10:07:48,046 INFO L137 encePairwiseOnDemand]: 306/318 looper letters, 310 selfloop transitions, 54 changer transitions 0/370 dead transitions. [2023-08-30 10:07:48,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 370 transitions, 2933 flow [2023-08-30 10:07:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:07:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:07:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2023 transitions. [2023-08-30 10:07:48,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301362683438156 [2023-08-30 10:07:48,049 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2023 transitions. [2023-08-30 10:07:48,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2023 transitions. [2023-08-30 10:07:48,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:48,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2023 transitions. [2023-08-30 10:07:48,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 168.58333333333334) internal successors, (2023), 12 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:48,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 318.0) internal successors, (4134), 13 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:48,057 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 318.0) internal successors, (4134), 13 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:48,057 INFO L175 Difference]: Start difference. First operand has 137 places, 150 transitions, 1507 flow. Second operand 12 states and 2023 transitions. [2023-08-30 10:07:48,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 370 transitions, 2933 flow [2023-08-30 10:07:48,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 370 transitions, 2819 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-30 10:07:48,767 INFO L231 Difference]: Finished difference. Result has 144 places, 153 transitions, 1569 flow [2023-08-30 10:07:48,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1569, PETRI_PLACES=144, PETRI_TRANSITIONS=153} [2023-08-30 10:07:48,768 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 79 predicate places. [2023-08-30 10:07:48,768 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 153 transitions, 1569 flow [2023-08-30 10:07:48,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:48,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:48,769 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, 1, 1] [2023-08-30 10:07:48,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 10:07:48,769 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 10:07:48,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash 837672005, now seen corresponding path program 1 times [2023-08-30 10:07:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:48,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104917132] [2023-08-30 10:07:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:48,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:48,851 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 10:07:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104917132] [2023-08-30 10:07:48,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104917132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:48,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:48,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:07:48,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962462652] [2023-08-30 10:07:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:48,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:48,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:48,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:48,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:48,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 318 [2023-08-30 10:07:48,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 153 transitions, 1569 flow. Second operand has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:48,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:48,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 318 [2023-08-30 10:07:48,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:50,382 INFO L130 PetriNetUnfolder]: 9496/15611 cut-off events. [2023-08-30 10:07:50,382 INFO L131 PetriNetUnfolder]: For 57376/57376 co-relation queries the response was YES. [2023-08-30 10:07:50,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57124 conditions, 15611 events. 9496/15611 cut-off events. For 57376/57376 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 103489 event pairs, 2064 based on Foata normal form. 150/15030 useless extension candidates. Maximal degree in co-relation 57083. Up to 9466 conditions per place. [2023-08-30 10:07:50,482 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 315 selfloop transitions, 54 changer transitions 0/375 dead transitions. [2023-08-30 10:07:50,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 375 transitions, 2981 flow [2023-08-30 10:07:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:07:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:07:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2308 transitions. [2023-08-30 10:07:50,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518418688230009 [2023-08-30 10:07:50,485 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2308 transitions. [2023-08-30 10:07:50,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2308 transitions. [2023-08-30 10:07:50,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:50,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2308 transitions. [2023-08-30 10:07:50,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 164.85714285714286) internal successors, (2308), 14 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:50,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 318.0) internal successors, (4770), 15 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:50,491 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 318.0) internal successors, (4770), 15 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:50,491 INFO L175 Difference]: Start difference. First operand has 144 places, 153 transitions, 1569 flow. Second operand 14 states and 2308 transitions. [2023-08-30 10:07:50,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 375 transitions, 2981 flow [2023-08-30 10:07:51,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 375 transitions, 2871 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-30 10:07:51,098 INFO L231 Difference]: Finished difference. Result has 152 places, 159 transitions, 1705 flow [2023-08-30 10:07:51,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1705, PETRI_PLACES=152, PETRI_TRANSITIONS=159} [2023-08-30 10:07:51,098 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 87 predicate places. [2023-08-30 10:07:51,099 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 159 transitions, 1705 flow [2023-08-30 10:07:51,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:51,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:51,099 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, 1, 1] [2023-08-30 10:07:51,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 10:07:51,099 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:51,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash 835999901, now seen corresponding path program 1 times [2023-08-30 10:07:51,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:51,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125572760] [2023-08-30 10:07:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:51,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:51,213 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 10:07:51,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125572760] [2023-08-30 10:07:51,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125572760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:51,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:51,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:07:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588216458] [2023-08-30 10:07:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:51,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:07:51,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:07:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:07:51,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 318 [2023-08-30 10:07:51,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 159 transitions, 1705 flow. Second operand has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:51,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:51,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 318 [2023-08-30 10:07:51,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:52,832 INFO L130 PetriNetUnfolder]: 9097/14841 cut-off events. [2023-08-30 10:07:52,833 INFO L131 PetriNetUnfolder]: For 57350/57350 co-relation queries the response was YES. [2023-08-30 10:07:52,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55128 conditions, 14841 events. 9097/14841 cut-off events. For 57350/57350 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 96457 event pairs, 1650 based on Foata normal form. 150/14303 useless extension candidates. Maximal degree in co-relation 55084. Up to 6831 conditions per place. [2023-08-30 10:07:52,923 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 327 selfloop transitions, 71 changer transitions 0/404 dead transitions. [2023-08-30 10:07:52,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 404 transitions, 3005 flow [2023-08-30 10:07:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:07:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:07:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2636 transitions. [2023-08-30 10:07:52,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180817610062893 [2023-08-30 10:07:52,926 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2636 transitions. [2023-08-30 10:07:52,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2636 transitions. [2023-08-30 10:07:52,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:52,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2636 transitions. [2023-08-30 10:07:52,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 164.75) internal successors, (2636), 16 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:52,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 318.0) internal successors, (5406), 17 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:52,933 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 318.0) internal successors, (5406), 17 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:52,933 INFO L175 Difference]: Start difference. First operand has 152 places, 159 transitions, 1705 flow. Second operand 16 states and 2636 transitions. [2023-08-30 10:07:52,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 404 transitions, 3005 flow [2023-08-30 10:07:53,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 404 transitions, 2715 flow, removed 40 selfloop flow, removed 18 redundant places. [2023-08-30 10:07:53,644 INFO L231 Difference]: Finished difference. Result has 149 places, 145 transitions, 1346 flow [2023-08-30 10:07:53,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1346, PETRI_PLACES=149, PETRI_TRANSITIONS=145} [2023-08-30 10:07:53,645 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 84 predicate places. [2023-08-30 10:07:53,645 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 145 transitions, 1346 flow [2023-08-30 10:07:53,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:53,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:53,649 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, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:53,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:07:53,649 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:53,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash -96749525, now seen corresponding path program 1 times [2023-08-30 10:07:53,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:53,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619364063] [2023-08-30 10:07:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:53,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:53,747 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 10:07:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:53,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619364063] [2023-08-30 10:07:53,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619364063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:53,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:53,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:07:53,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664067325] [2023-08-30 10:07:53,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:53,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:07:53,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:53,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:07:53,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:07:53,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-30 10:07:53,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 145 transitions, 1346 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:53,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:53,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-30 10:07:53,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:55,649 INFO L130 PetriNetUnfolder]: 9971/16290 cut-off events. [2023-08-30 10:07:55,649 INFO L131 PetriNetUnfolder]: For 53628/53628 co-relation queries the response was YES. [2023-08-30 10:07:55,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58143 conditions, 16290 events. 9971/16290 cut-off events. For 53628/53628 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 107435 event pairs, 1343 based on Foata normal form. 84/15595 useless extension candidates. Maximal degree in co-relation 58103. Up to 4700 conditions per place. [2023-08-30 10:07:55,767 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 362 selfloop transitions, 86 changer transitions 2/456 dead transitions. [2023-08-30 10:07:55,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 456 transitions, 3260 flow [2023-08-30 10:07:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:07:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:07:55,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2742 transitions. [2023-08-30 10:07:55,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072142064372919 [2023-08-30 10:07:55,771 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2742 transitions. [2023-08-30 10:07:55,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2742 transitions. [2023-08-30 10:07:55,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:55,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2742 transitions. [2023-08-30 10:07:55,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 161.2941176470588) internal successors, (2742), 17 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:55,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 318.0) internal successors, (5724), 18 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:55,780 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 318.0) internal successors, (5724), 18 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:55,780 INFO L175 Difference]: Start difference. First operand has 149 places, 145 transitions, 1346 flow. Second operand 17 states and 2742 transitions. [2023-08-30 10:07:55,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 456 transitions, 3260 flow [2023-08-30 10:07:56,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 456 transitions, 3157 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-08-30 10:07:56,287 INFO L231 Difference]: Finished difference. Result has 159 places, 162 transitions, 1708 flow [2023-08-30 10:07:56,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1708, PETRI_PLACES=159, PETRI_TRANSITIONS=162} [2023-08-30 10:07:56,287 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 94 predicate places. [2023-08-30 10:07:56,287 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 162 transitions, 1708 flow [2023-08-30 10:07:56,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:56,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:56,288 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, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:56,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:07:56,288 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 10:07:56,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash 998481039, now seen corresponding path program 1 times [2023-08-30 10:07:56,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:56,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99963626] [2023-08-30 10:07:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:56,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:56,407 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 10:07:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99963626] [2023-08-30 10:07:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99963626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:56,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:56,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:07:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589337728] [2023-08-30 10:07:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:56,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:07:56,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:56,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:07:56,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:07:56,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-30 10:07:56,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 162 transitions, 1708 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:56,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:56,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-30 10:07:56,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:58,310 INFO L130 PetriNetUnfolder]: 9887/16211 cut-off events. [2023-08-30 10:07:58,310 INFO L131 PetriNetUnfolder]: For 62338/62338 co-relation queries the response was YES. [2023-08-30 10:07:58,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61536 conditions, 16211 events. 9887/16211 cut-off events. For 62338/62338 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 107261 event pairs, 1348 based on Foata normal form. 84/15515 useless extension candidates. Maximal degree in co-relation 61492. Up to 4700 conditions per place. [2023-08-30 10:07:58,387 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 386 selfloop transitions, 94 changer transitions 8/494 dead transitions. [2023-08-30 10:07:58,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 494 transitions, 3550 flow [2023-08-30 10:07:58,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:07:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:07:58,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3345 transitions. [2023-08-30 10:07:58,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008984725965858 [2023-08-30 10:07:58,390 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3345 transitions. [2023-08-30 10:07:58,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3345 transitions. [2023-08-30 10:07:58,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:58,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3345 transitions. [2023-08-30 10:07:58,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 159.28571428571428) internal successors, (3345), 21 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:58,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:58,398 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:58,398 INFO L175 Difference]: Start difference. First operand has 159 places, 162 transitions, 1708 flow. Second operand 21 states and 3345 transitions. [2023-08-30 10:07:58,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 494 transitions, 3550 flow [2023-08-30 10:07:58,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 494 transitions, 3436 flow, removed 27 selfloop flow, removed 8 redundant places. [2023-08-30 10:07:58,948 INFO L231 Difference]: Finished difference. Result has 171 places, 160 transitions, 1736 flow [2023-08-30 10:07:58,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1736, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2023-08-30 10:07:58,948 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 106 predicate places. [2023-08-30 10:07:58,949 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 1736 flow [2023-08-30 10:07:58,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:58,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:58,949 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, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 10:07:58,949 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:07:58,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash 998500134, now seen corresponding path program 1 times [2023-08-30 10:07:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:58,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207656834] [2023-08-30 10:07:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:58,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:59,038 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 10:07:59,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:59,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207656834] [2023-08-30 10:07:59,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207656834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:59,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:59,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:07:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109482219] [2023-08-30 10:07:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:59,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:07:59,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:59,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:07:59,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:07:59,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-30 10:07:59,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 1736 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:59,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:59,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-30 10:07:59,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:00,806 INFO L130 PetriNetUnfolder]: 10404/17094 cut-off events. [2023-08-30 10:08:00,806 INFO L131 PetriNetUnfolder]: For 63851/63851 co-relation queries the response was YES. [2023-08-30 10:08:00,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66096 conditions, 17094 events. 10404/17094 cut-off events. For 63851/63851 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 114460 event pairs, 1526 based on Foata normal form. 42/16298 useless extension candidates. Maximal degree in co-relation 66052. Up to 5515 conditions per place. [2023-08-30 10:08:00,928 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 386 selfloop transitions, 104 changer transitions 2/498 dead transitions. [2023-08-30 10:08:00,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 498 transitions, 3822 flow [2023-08-30 10:08:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:08:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:08:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3203 transitions. [2023-08-30 10:08:00,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036163522012579 [2023-08-30 10:08:00,931 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3203 transitions. [2023-08-30 10:08:00,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3203 transitions. [2023-08-30 10:08:00,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:00,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3203 transitions. [2023-08-30 10:08:00,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 160.15) internal successors, (3203), 20 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:00,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 318.0) internal successors, (6678), 21 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:00,937 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 318.0) internal successors, (6678), 21 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:00,937 INFO L175 Difference]: Start difference. First operand has 171 places, 160 transitions, 1736 flow. Second operand 20 states and 3203 transitions. [2023-08-30 10:08:00,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 498 transitions, 3822 flow [2023-08-30 10:08:01,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 498 transitions, 3692 flow, removed 10 selfloop flow, removed 13 redundant places. [2023-08-30 10:08:01,789 INFO L231 Difference]: Finished difference. Result has 180 places, 175 transitions, 2085 flow [2023-08-30 10:08:01,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2085, PETRI_PLACES=180, PETRI_TRANSITIONS=175} [2023-08-30 10:08:01,790 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 115 predicate places. [2023-08-30 10:08:01,790 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 175 transitions, 2085 flow [2023-08-30 10:08:01,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:01,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:01,790 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, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:01,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 10:08:01,790 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 10:08:01,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash 460323761, now seen corresponding path program 1 times [2023-08-30 10:08:01,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:01,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367710857] [2023-08-30 10:08:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:01,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:01,897 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 10:08:01,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:01,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367710857] [2023-08-30 10:08:01,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367710857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:01,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:01,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:08:01,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746932942] [2023-08-30 10:08:01,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:01,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:08:01,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:01,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:08:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:08:01,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-30 10:08:01,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 175 transitions, 2085 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:01,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:01,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-30 10:08:01,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:04,033 INFO L130 PetriNetUnfolder]: 11354/18784 cut-off events. [2023-08-30 10:08:04,033 INFO L131 PetriNetUnfolder]: For 94283/94283 co-relation queries the response was YES. [2023-08-30 10:08:04,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74741 conditions, 18784 events. 11354/18784 cut-off events. For 94283/94283 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 129289 event pairs, 1905 based on Foata normal form. 126/17951 useless extension candidates. Maximal degree in co-relation 74694. Up to 6448 conditions per place. [2023-08-30 10:08:04,135 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 375 selfloop transitions, 96 changer transitions 4/481 dead transitions. [2023-08-30 10:08:04,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 481 transitions, 4020 flow [2023-08-30 10:08:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:08:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:08:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2740 transitions. [2023-08-30 10:08:04,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068442471328154 [2023-08-30 10:08:04,137 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2740 transitions. [2023-08-30 10:08:04,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2740 transitions. [2023-08-30 10:08:04,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:04,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2740 transitions. [2023-08-30 10:08:04,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 161.1764705882353) internal successors, (2740), 17 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:04,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 318.0) internal successors, (5724), 18 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:04,143 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 318.0) internal successors, (5724), 18 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:04,143 INFO L175 Difference]: Start difference. First operand has 180 places, 175 transitions, 2085 flow. Second operand 17 states and 2740 transitions. [2023-08-30 10:08:04,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 481 transitions, 4020 flow [2023-08-30 10:08:05,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 481 transitions, 3898 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-08-30 10:08:05,200 INFO L231 Difference]: Finished difference. Result has 187 places, 187 transitions, 2348 flow [2023-08-30 10:08:05,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2348, PETRI_PLACES=187, PETRI_TRANSITIONS=187} [2023-08-30 10:08:05,201 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 122 predicate places. [2023-08-30 10:08:05,201 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 187 transitions, 2348 flow [2023-08-30 10:08:05,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:05,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:05,201 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, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:05,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 10:08:05,202 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 10:08:05,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:05,202 INFO L85 PathProgramCache]: Analyzing trace with hash 195604518, now seen corresponding path program 2 times [2023-08-30 10:08:05,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:05,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937630042] [2023-08-30 10:08:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:05,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:05,292 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 10:08:05,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:05,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937630042] [2023-08-30 10:08:05,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937630042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:05,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:05,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:08:05,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282492112] [2023-08-30 10:08:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:05,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:08:05,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:08:05,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:08:05,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-30 10:08:05,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 187 transitions, 2348 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:05,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:05,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-30 10:08:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:07,403 INFO L130 PetriNetUnfolder]: 11249/18643 cut-off events. [2023-08-30 10:08:07,403 INFO L131 PetriNetUnfolder]: For 95647/95647 co-relation queries the response was YES. [2023-08-30 10:08:07,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76981 conditions, 18643 events. 11249/18643 cut-off events. For 95647/95647 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 128679 event pairs, 1917 based on Foata normal form. 84/17774 useless extension candidates. Maximal degree in co-relation 76931. Up to 6343 conditions per place. [2023-08-30 10:08:07,566 INFO L137 encePairwiseOnDemand]: 305/318 looper letters, 398 selfloop transitions, 105 changer transitions 10/519 dead transitions. [2023-08-30 10:08:07,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 519 transitions, 4278 flow [2023-08-30 10:08:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:08:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:08:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3344 transitions. [2023-08-30 10:08:07,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007487271638215 [2023-08-30 10:08:07,570 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3344 transitions. [2023-08-30 10:08:07,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3344 transitions. [2023-08-30 10:08:07,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:07,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3344 transitions. [2023-08-30 10:08:07,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 159.23809523809524) internal successors, (3344), 21 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:07,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:07,580 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:07,580 INFO L175 Difference]: Start difference. First operand has 187 places, 187 transitions, 2348 flow. Second operand 21 states and 3344 transitions. [2023-08-30 10:08:07,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 519 transitions, 4278 flow [2023-08-30 10:08:09,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 519 transitions, 4157 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-08-30 10:08:09,504 INFO L231 Difference]: Finished difference. Result has 198 places, 185 transitions, 2394 flow [2023-08-30 10:08:09,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2394, PETRI_PLACES=198, PETRI_TRANSITIONS=185} [2023-08-30 10:08:09,505 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 133 predicate places. [2023-08-30 10:08:09,505 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 185 transitions, 2394 flow [2023-08-30 10:08:09,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:09,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:09,506 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, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:09,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:08:09,506 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 10:08:09,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash 998500081, now seen corresponding path program 2 times [2023-08-30 10:08:09,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:09,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690116100] [2023-08-30 10:08:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:09,592 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 10:08:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690116100] [2023-08-30 10:08:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690116100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:09,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:08:09,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916080787] [2023-08-30 10:08:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:08:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:08:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:08:09,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-30 10:08:09,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 185 transitions, 2394 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:09,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:09,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-30 10:08:09,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:11,592 INFO L130 PetriNetUnfolder]: 11186/18539 cut-off events. [2023-08-30 10:08:11,593 INFO L131 PetriNetUnfolder]: For 90322/90322 co-relation queries the response was YES. [2023-08-30 10:08:11,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77419 conditions, 18539 events. 11186/18539 cut-off events. For 90322/90322 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 126826 event pairs, 2548 based on Foata normal form. 42/17635 useless extension candidates. Maximal degree in co-relation 77369. Up to 11634 conditions per place. [2023-08-30 10:08:11,712 INFO L137 encePairwiseOnDemand]: 306/318 looper letters, 355 selfloop transitions, 64 changer transitions 23/448 dead transitions. [2023-08-30 10:08:11,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 448 transitions, 3989 flow [2023-08-30 10:08:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:08:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:08:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2713 transitions. [2023-08-30 10:08:11,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018497965223825 [2023-08-30 10:08:11,715 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2713 transitions. [2023-08-30 10:08:11,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2713 transitions. [2023-08-30 10:08:11,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:11,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2713 transitions. [2023-08-30 10:08:11,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 159.58823529411765) internal successors, (2713), 17 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:11,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 318.0) internal successors, (5724), 18 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:11,722 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 318.0) internal successors, (5724), 18 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:11,722 INFO L175 Difference]: Start difference. First operand has 198 places, 185 transitions, 2394 flow. Second operand 17 states and 2713 transitions. [2023-08-30 10:08:11,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 448 transitions, 3989 flow [2023-08-30 10:08:13,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 448 transitions, 3774 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-08-30 10:08:13,283 INFO L231 Difference]: Finished difference. Result has 194 places, 184 transitions, 2281 flow [2023-08-30 10:08:13,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2281, PETRI_PLACES=194, PETRI_TRANSITIONS=184} [2023-08-30 10:08:13,284 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 129 predicate places. [2023-08-30 10:08:13,284 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 184 transitions, 2281 flow [2023-08-30 10:08:13,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:13,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:13,285 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, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:13,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 10:08:13,285 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:08:13,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 195585387, now seen corresponding path program 2 times [2023-08-30 10:08:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91315215] [2023-08-30 10:08:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:13,371 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 10:08:13,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:13,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91315215] [2023-08-30 10:08:13,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91315215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:13,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:13,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:08:13,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251285691] [2023-08-30 10:08:13,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:13,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:08:13,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:13,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:08:13,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:08:13,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-30 10:08:13,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 184 transitions, 2281 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:13,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:13,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-30 10:08:13,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:15,379 INFO L130 PetriNetUnfolder]: 11409/18975 cut-off events. [2023-08-30 10:08:15,379 INFO L131 PetriNetUnfolder]: For 81773/81773 co-relation queries the response was YES. [2023-08-30 10:08:15,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76965 conditions, 18975 events. 11409/18975 cut-off events. For 81773/81773 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 130967 event pairs, 2738 based on Foata normal form. 42/18034 useless extension candidates. Maximal degree in co-relation 76918. Up to 12128 conditions per place. [2023-08-30 10:08:15,516 INFO L137 encePairwiseOnDemand]: 306/318 looper letters, 374 selfloop transitions, 64 changer transitions 7/451 dead transitions. [2023-08-30 10:08:15,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 451 transitions, 3953 flow [2023-08-30 10:08:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:08:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:08:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2712 transitions. [2023-08-30 10:08:15,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016648168701443 [2023-08-30 10:08:15,518 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2712 transitions. [2023-08-30 10:08:15,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2712 transitions. [2023-08-30 10:08:15,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:15,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2712 transitions. [2023-08-30 10:08:15,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 159.52941176470588) internal successors, (2712), 17 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:15,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 318.0) internal successors, (5724), 18 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:15,524 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 318.0) internal successors, (5724), 18 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:15,525 INFO L175 Difference]: Start difference. First operand has 194 places, 184 transitions, 2281 flow. Second operand 17 states and 2712 transitions. [2023-08-30 10:08:15,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 451 transitions, 3953 flow [2023-08-30 10:08:17,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 451 transitions, 3667 flow, removed 26 selfloop flow, removed 20 redundant places. [2023-08-30 10:08:17,118 INFO L231 Difference]: Finished difference. Result has 189 places, 190 transitions, 2211 flow [2023-08-30 10:08:17,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2211, PETRI_PLACES=189, PETRI_TRANSITIONS=190} [2023-08-30 10:08:17,119 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 124 predicate places. [2023-08-30 10:08:17,119 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 190 transitions, 2211 flow [2023-08-30 10:08:17,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:17,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:17,119 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, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:17,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 10:08:17,119 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 10:08:17,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:17,120 INFO L85 PathProgramCache]: Analyzing trace with hash 195585423, now seen corresponding path program 2 times [2023-08-30 10:08:17,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:17,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920463202] [2023-08-30 10:08:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:17,219 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 10:08:17,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:17,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920463202] [2023-08-30 10:08:17,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920463202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:17,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:17,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:08:17,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125272732] [2023-08-30 10:08:17,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:17,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:08:17,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:17,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:08:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:08:17,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-30 10:08:17,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 190 transitions, 2211 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:17,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:17,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-30 10:08:17,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:19,094 INFO L130 PetriNetUnfolder]: 11695/19477 cut-off events. [2023-08-30 10:08:19,094 INFO L131 PetriNetUnfolder]: For 68497/68497 co-relation queries the response was YES. [2023-08-30 10:08:19,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74958 conditions, 19477 events. 11695/19477 cut-off events. For 68497/68497 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 135583 event pairs, 1594 based on Foata normal form. 42/18495 useless extension candidates. Maximal degree in co-relation 74917. Up to 7144 conditions per place. [2023-08-30 10:08:19,220 INFO L137 encePairwiseOnDemand]: 307/318 looper letters, 363 selfloop transitions, 110 changer transitions 33/511 dead transitions. [2023-08-30 10:08:19,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 511 transitions, 4133 flow [2023-08-30 10:08:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:08:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:08:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3193 transitions. [2023-08-30 10:08:19,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020440251572327 [2023-08-30 10:08:19,222 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3193 transitions. [2023-08-30 10:08:19,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3193 transitions. [2023-08-30 10:08:19,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:19,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3193 transitions. [2023-08-30 10:08:19,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 159.65) internal successors, (3193), 20 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:19,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 318.0) internal successors, (6678), 21 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:19,231 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 318.0) internal successors, (6678), 21 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:19,231 INFO L175 Difference]: Start difference. First operand has 189 places, 190 transitions, 2211 flow. Second operand 20 states and 3193 transitions. [2023-08-30 10:08:19,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 511 transitions, 4133 flow [2023-08-30 10:08:20,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 511 transitions, 3931 flow, removed 28 selfloop flow, removed 14 redundant places. [2023-08-30 10:08:20,344 INFO L231 Difference]: Finished difference. Result has 195 places, 191 transitions, 2293 flow [2023-08-30 10:08:20,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2293, PETRI_PLACES=195, PETRI_TRANSITIONS=191} [2023-08-30 10:08:20,345 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 130 predicate places. [2023-08-30 10:08:20,345 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 191 transitions, 2293 flow [2023-08-30 10:08:20,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:20,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:20,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:20,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:08:20,346 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:08:20,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:20,346 INFO L85 PathProgramCache]: Analyzing trace with hash 175281097, now seen corresponding path program 1 times [2023-08-30 10:08:20,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:20,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205783157] [2023-08-30 10:08:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:20,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:20,391 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 10:08:20,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205783157] [2023-08-30 10:08:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205783157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:08:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080296655] [2023-08-30 10:08:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:20,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:08:20,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:08:20,394 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 10:08:20,409 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 10:08:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:20,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:08:20,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:08:20,549 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 10:08:20,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:08:20,569 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 10:08:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080296655] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:08:20,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:08:20,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:08:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078287261] [2023-08-30 10:08:20,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:08:20,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:08:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:08:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:08:20,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 318 [2023-08-30 10:08:20,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 191 transitions, 2293 flow. Second operand has 7 states, 7 states have (on average 158.28571428571428) internal successors, (1108), 7 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:20,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:20,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 318 [2023-08-30 10:08:20,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:21,042 INFO L130 PetriNetUnfolder]: 2250/3901 cut-off events. [2023-08-30 10:08:21,042 INFO L131 PetriNetUnfolder]: For 25146/25206 co-relation queries the response was YES. [2023-08-30 10:08:21,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17144 conditions, 3901 events. 2250/3901 cut-off events. For 25146/25206 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24180 event pairs, 144 based on Foata normal form. 596/4494 useless extension candidates. Maximal degree in co-relation 17103. Up to 2874 conditions per place. [2023-08-30 10:08:21,061 INFO L137 encePairwiseOnDemand]: 315/318 looper letters, 0 selfloop transitions, 0 changer transitions 344/344 dead transitions. [2023-08-30 10:08:21,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 344 transitions, 5011 flow [2023-08-30 10:08:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:08:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:08:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 837 transitions. [2023-08-30 10:08:21,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264150943396226 [2023-08-30 10:08:21,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 837 transitions. [2023-08-30 10:08:21,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 837 transitions. [2023-08-30 10:08:21,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:21,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 837 transitions. [2023-08-30 10:08:21,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.4) internal successors, (837), 5 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 10:08:21,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:21,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:21,066 INFO L175 Difference]: Start difference. First operand has 195 places, 191 transitions, 2293 flow. Second operand 5 states and 837 transitions. [2023-08-30 10:08:21,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 344 transitions, 5011 flow [2023-08-30 10:08:21,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 344 transitions, 4745 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-08-30 10:08:21,100 INFO L231 Difference]: Finished difference. Result has 171 places, 0 transitions, 0 flow [2023-08-30 10:08:21,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=171, PETRI_TRANSITIONS=0} [2023-08-30 10:08:21,101 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 106 predicate places. [2023-08-30 10:08:21,101 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 0 transitions, 0 flow [2023-08-30 10:08:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.28571428571428) internal successors, (1108), 7 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:08:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:08:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:08:21,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:08:21,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:08:21,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:08:21,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:08:21,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:08:21,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:08:21,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:08:21,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:08:21,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:08:21,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:08:21,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:08:21,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:08:21,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:08:21,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:08:21,313 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,SelfDestructingSolverStorable30 [2023-08-30 10:08:21,314 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:21,314 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 10:08:21,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 10:08:21,340 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-30 10:08:21,341 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:08:21,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 863 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-08-30 10:08:21,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 10:08:21,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 180 transitions, 378 flow [2023-08-30 10:08:21,343 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:08:21,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 180 transitions, 378 flow [2023-08-30 10:08:21,344 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 180 transitions, 378 flow [2023-08-30 10:08:21,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 10:08:21,366 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-30 10:08:21,366 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:08:21,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 863 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-08-30 10:08:21,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 13640 [2023-08-30 10:08:24,239 INFO L134 LiptonReduction]: Checked pairs total: 34358 [2023-08-30 10:08:24,239 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-30 10:08:24,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:08:24,240 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;@3a9d109d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:08:24,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:08:24,245 INFO L130 PetriNetUnfolder]: 5/56 cut-off events. [2023-08-30 10:08:24,245 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:08:24,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:24,246 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:08:24,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:08:24,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:24,246 INFO L85 PathProgramCache]: Analyzing trace with hash -78621379, now seen corresponding path program 1 times [2023-08-30 10:08:24,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:24,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358496768] [2023-08-30 10:08:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:08:24,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:08:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:08:24,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:08:24,267 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:08:24,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:08:24,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 10:08:24,267 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:08:24,268 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:08:24,268 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:08:24,268 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:08:24,291 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:08:24,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 226 transitions, 482 flow [2023-08-30 10:08:24,345 INFO L130 PetriNetUnfolder]: 50/445 cut-off events. [2023-08-30 10:08:24,345 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:08:24,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 50/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1571 event pairs, 1 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-30 10:08:24,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 226 transitions, 482 flow [2023-08-30 10:08:24,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 226 transitions, 482 flow [2023-08-30 10:08:24,355 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:08:24,355 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 226 transitions, 482 flow [2023-08-30 10:08:24,355 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 226 transitions, 482 flow [2023-08-30 10:08:24,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 226 transitions, 482 flow [2023-08-30 10:08:24,401 INFO L130 PetriNetUnfolder]: 50/445 cut-off events. [2023-08-30 10:08:24,401 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:08:24,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 50/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1571 event pairs, 1 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-30 10:08:24,418 INFO L119 LiptonReduction]: Number of co-enabled transitions 26664 [2023-08-30 10:08:27,437 INFO L134 LiptonReduction]: Checked pairs total: 73489 [2023-08-30 10:08:27,437 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-30 10:08:27,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:08:27,438 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;@3a9d109d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:08:27,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:08:27,440 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 10:08:27,440 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:08:27,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:27,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:08:27,441 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 10:08:27,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1491373637, now seen corresponding path program 1 times [2023-08-30 10:08:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:27,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137675212] [2023-08-30 10:08:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:27,469 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 10:08:27,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:27,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137675212] [2023-08-30 10:08:27,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137675212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:27,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:27,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:08:27,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458443781] [2023-08-30 10:08:27,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:27,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:08:27,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:27,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:08:27,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:08:27,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 394 [2023-08-30 10:08:27,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 103 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:27,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:27,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 394 [2023-08-30 10:08:27,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:42,797 INFO L130 PetriNetUnfolder]: 205155/288571 cut-off events. [2023-08-30 10:08:42,797 INFO L131 PetriNetUnfolder]: For 3553/3553 co-relation queries the response was YES. [2023-08-30 10:08:43,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573456 conditions, 288571 events. 205155/288571 cut-off events. For 3553/3553 co-relation queries the response was YES. Maximal size of possible extension queue 5741. Compared 2180391 event pairs, 133481 based on Foata normal form. 17835/230080 useless extension candidates. Maximal degree in co-relation 40350. Up to 282520 conditions per place. [2023-08-30 10:08:44,118 INFO L137 encePairwiseOnDemand]: 368/394 looper letters, 88 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-08-30 10:08:44,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 410 flow [2023-08-30 10:08:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:08:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:08:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-30 10:08:44,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888324873096447 [2023-08-30 10:08:44,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-30 10:08:44,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-30 10:08:44,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:44,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-30 10:08:44,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:44,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:44,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:44,123 INFO L175 Difference]: Start difference. First operand has 86 places, 103 transitions, 236 flow. Second operand 3 states and 696 transitions. [2023-08-30 10:08:44,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 410 flow [2023-08-30 10:08:44,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:08:44,126 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 208 flow [2023-08-30 10:08:44,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2023-08-30 10:08:44,127 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2023-08-30 10:08:44,127 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 208 flow [2023-08-30 10:08:44,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:44,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:44,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:08:44,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 10:08:44,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:08:44,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash 551866458, now seen corresponding path program 1 times [2023-08-30 10:08:44,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:44,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685159230] [2023-08-30 10:08:44,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:44,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:44,153 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 10:08:44,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:44,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685159230] [2023-08-30 10:08:44,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685159230] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:08:44,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679426789] [2023-08-30 10:08:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:44,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:08:44,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:08:44,157 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 10:08:44,164 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 10:08:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:44,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:08:44,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:08:44,268 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 10:08:44,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:08:44,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679426789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:44,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:08:44,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:08:44,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543960330] [2023-08-30 10:08:44,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:44,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:08:44,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:44,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:08:44,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:08:44,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 394 [2023-08-30 10:08:44,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:44,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:44,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 394 [2023-08-30 10:08:44,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:58,943 INFO L130 PetriNetUnfolder]: 190791/268627 cut-off events. [2023-08-30 10:08:58,943 INFO L131 PetriNetUnfolder]: For 13867/13867 co-relation queries the response was YES. [2023-08-30 10:08:59,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549573 conditions, 268627 events. 190791/268627 cut-off events. For 13867/13867 co-relation queries the response was YES. Maximal size of possible extension queue 5184. Compared 2007078 event pairs, 124013 based on Foata normal form. 0/206323 useless extension candidates. Maximal degree in co-relation 45986. Up to 262971 conditions per place. [2023-08-30 10:09:00,361 INFO L137 encePairwiseOnDemand]: 391/394 looper letters, 87 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 10:09:00,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 99 transitions, 418 flow [2023-08-30 10:09:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:09:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:09:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 858 transitions. [2023-08-30 10:09:00,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444162436548223 [2023-08-30 10:09:00,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 858 transitions. [2023-08-30 10:09:00,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 858 transitions. [2023-08-30 10:09:00,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:00,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 858 transitions. [2023-08-30 10:09:00,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.5) internal successors, (858), 4 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 10:09:00,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 394.0) internal successors, (1970), 5 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:00,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 394.0) internal successors, (1970), 5 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:00,366 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 208 flow. Second operand 4 states and 858 transitions. [2023-08-30 10:09:00,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 99 transitions, 418 flow [2023-08-30 10:09:00,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 99 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:00,372 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 206 flow [2023-08-30 10:09:00,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2023-08-30 10:09:00,373 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2023-08-30 10:09:00,373 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 206 flow [2023-08-30 10:09:00,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:00,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:00,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:09:00,382 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 10:09:00,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:00,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:00,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:00,580 INFO L85 PathProgramCache]: Analyzing trace with hash 551866481, now seen corresponding path program 1 times [2023-08-30 10:09:00,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:00,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653309148] [2023-08-30 10:09:00,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:00,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:00,606 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 10:09:00,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:00,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653309148] [2023-08-30 10:09:00,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653309148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:00,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:00,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:00,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825865802] [2023-08-30 10:09:00,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:00,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:00,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:00,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:00,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:00,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 394 [2023-08-30 10:09:00,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:00,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:00,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 394 [2023-08-30 10:09:00,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:13,134 INFO L130 PetriNetUnfolder]: 176427/250206 cut-off events. [2023-08-30 10:09:13,135 INFO L131 PetriNetUnfolder]: For 8058/8058 co-relation queries the response was YES. [2023-08-30 10:09:13,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506340 conditions, 250206 events. 176427/250206 cut-off events. For 8058/8058 co-relation queries the response was YES. Maximal size of possible extension queue 4826. Compared 1953612 event pairs, 23884 based on Foata normal form. 0/197116 useless extension candidates. Maximal degree in co-relation 505507. Up to 209171 conditions per place. [2023-08-30 10:09:14,256 INFO L137 encePairwiseOnDemand]: 390/394 looper letters, 115 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-08-30 10:09:14,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 129 transitions, 538 flow [2023-08-30 10:09:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-08-30 10:09:14,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5854483925549916 [2023-08-30 10:09:14,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-08-30 10:09:14,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-08-30 10:09:14,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:14,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-08-30 10:09:14,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,259 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 206 flow. Second operand 3 states and 692 transitions. [2023-08-30 10:09:14,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 129 transitions, 538 flow [2023-08-30 10:09:14,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:14,267 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 215 flow [2023-08-30 10:09:14,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2023-08-30 10:09:14,267 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2023-08-30 10:09:14,268 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 215 flow [2023-08-30 10:09:14,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:14,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:09:14,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:14,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1505551254, now seen corresponding path program 1 times [2023-08-30 10:09:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:14,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389598037] [2023-08-30 10:09:14,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:14,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:14,301 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 10:09:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389598037] [2023-08-30 10:09:14,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389598037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:14,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:14,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:09:14,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235675694] [2023-08-30 10:09:14,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:14,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:14,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:14,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:14,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 394 [2023-08-30 10:09:14,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:14,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 394 [2023-08-30 10:09:14,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:25,889 INFO L130 PetriNetUnfolder]: 164721/230976 cut-off events. [2023-08-30 10:09:25,889 INFO L131 PetriNetUnfolder]: For 42244/42244 co-relation queries the response was YES. [2023-08-30 10:09:26,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485057 conditions, 230976 events. 164721/230976 cut-off events. For 42244/42244 co-relation queries the response was YES. Maximal size of possible extension queue 4549. Compared 1684169 event pairs, 64275 based on Foata normal form. 0/183447 useless extension candidates. Maximal degree in co-relation 484926. Up to 215790 conditions per place. [2023-08-30 10:09:27,106 INFO L137 encePairwiseOnDemand]: 384/394 looper letters, 100 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-08-30 10:09:27,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 517 flow [2023-08-30 10:09:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-08-30 10:09:27,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5702199661590525 [2023-08-30 10:09:27,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-08-30 10:09:27,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-08-30 10:09:27,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:27,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-08-30 10:09:27,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:27,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:27,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:27,109 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 215 flow. Second operand 3 states and 674 transitions. [2023-08-30 10:09:27,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 517 flow [2023-08-30 10:09:27,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:27,131 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 247 flow [2023-08-30 10:09:27,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2023-08-30 10:09:27,131 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2023-08-30 10:09:27,132 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 247 flow [2023-08-30 10:09:27,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:27,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:27,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:27,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 10:09:27,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:27,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1630990850, now seen corresponding path program 1 times [2023-08-30 10:09:27,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:27,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982087998] [2023-08-30 10:09:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:27,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:27,190 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 10:09:27,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:27,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982087998] [2023-08-30 10:09:27,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982087998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:27,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:27,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:27,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334799512] [2023-08-30 10:09:27,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:27,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:27,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:27,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:27,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:27,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 394 [2023-08-30 10:09:27,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:27,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:27,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 394 [2023-08-30 10:09:27,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:43,197 INFO L130 PetriNetUnfolder]: 210182/298989 cut-off events. [2023-08-30 10:09:43,197 INFO L131 PetriNetUnfolder]: For 55599/55599 co-relation queries the response was YES. [2023-08-30 10:09:43,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656664 conditions, 298989 events. 210182/298989 cut-off events. For 55599/55599 co-relation queries the response was YES. Maximal size of possible extension queue 6424. Compared 2329361 event pairs, 41906 based on Foata normal form. 0/254255 useless extension candidates. Maximal degree in co-relation 656536. Up to 176985 conditions per place. [2023-08-30 10:09:44,901 INFO L137 encePairwiseOnDemand]: 374/394 looper letters, 257 selfloop transitions, 29 changer transitions 0/296 dead transitions. [2023-08-30 10:09:44,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 296 transitions, 1411 flow [2023-08-30 10:09:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:09:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:09:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1579 transitions. [2023-08-30 10:09:44,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725163161711385 [2023-08-30 10:09:44,903 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1579 transitions. [2023-08-30 10:09:44,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1579 transitions. [2023-08-30 10:09:44,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:44,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1579 transitions. [2023-08-30 10:09:44,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.57142857142858) internal successors, (1579), 7 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:44,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:44,907 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:44,907 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 247 flow. Second operand 7 states and 1579 transitions. [2023-08-30 10:09:44,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 296 transitions, 1411 flow [2023-08-30 10:09:44,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 296 transitions, 1405 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:44,932 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 495 flow [2023-08-30 10:09:44,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2023-08-30 10:09:44,932 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 15 predicate places. [2023-08-30 10:09:44,933 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 495 flow [2023-08-30 10:09:44,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:44,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:44,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:44,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:09:44,933 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 10:09:44,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:44,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1630990948, now seen corresponding path program 1 times [2023-08-30 10:09:44,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:44,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359893510] [2023-08-30 10:09:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:44,980 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 10:09:44,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:44,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359893510] [2023-08-30 10:09:44,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359893510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:44,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:44,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943997606] [2023-08-30 10:09:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:44,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:44,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:44,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:44,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:45,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 394 [2023-08-30 10:09:45,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 495 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:45,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:45,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 394 [2023-08-30 10:09:45,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:06,257 INFO L130 PetriNetUnfolder]: 215709/312352 cut-off events. [2023-08-30 10:10:06,258 INFO L131 PetriNetUnfolder]: For 230196/230196 co-relation queries the response was YES. [2023-08-30 10:10:07,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817308 conditions, 312352 events. 215709/312352 cut-off events. For 230196/230196 co-relation queries the response was YES. Maximal size of possible extension queue 6897. Compared 2539091 event pairs, 38586 based on Foata normal form. 9975/311048 useless extension candidates. Maximal degree in co-relation 817177. Up to 197778 conditions per place. [2023-08-30 10:10:08,340 INFO L137 encePairwiseOnDemand]: 374/394 looper letters, 277 selfloop transitions, 35 changer transitions 0/322 dead transitions. [2023-08-30 10:10:08,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 322 transitions, 1855 flow [2023-08-30 10:10:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:10:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:10:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1579 transitions. [2023-08-30 10:10:08,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725163161711385 [2023-08-30 10:10:08,342 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1579 transitions. [2023-08-30 10:10:08,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1579 transitions. [2023-08-30 10:10:08,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:08,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1579 transitions. [2023-08-30 10:10:08,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.57142857142858) internal successors, (1579), 7 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:08,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:08,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:08,346 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 495 flow. Second operand 7 states and 1579 transitions. [2023-08-30 10:10:08,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 322 transitions, 1855 flow [2023-08-30 10:10:09,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 322 transitions, 1849 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:10:09,226 INFO L231 Difference]: Finished difference. Result has 110 places, 135 transitions, 875 flow [2023-08-30 10:10:09,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=875, PETRI_PLACES=110, PETRI_TRANSITIONS=135} [2023-08-30 10:10:09,227 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 24 predicate places. [2023-08-30 10:10:09,227 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 135 transitions, 875 flow [2023-08-30 10:10:09,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:09,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:09,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 10:10:09,228 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 10:10:09,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1070481051, now seen corresponding path program 1 times [2023-08-30 10:10:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:09,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27321802] [2023-08-30 10:10:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:09,270 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 10:10:09,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:09,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27321802] [2023-08-30 10:10:09,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27321802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:09,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:09,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:09,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376634324] [2023-08-30 10:10:09,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:09,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:09,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:09,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:09,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:09,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 394 [2023-08-30 10:10:09,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 135 transitions, 875 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:09,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:09,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 394 [2023-08-30 10:10:09,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:33,798 INFO L130 PetriNetUnfolder]: 241215/347645 cut-off events. [2023-08-30 10:10:33,798 INFO L131 PetriNetUnfolder]: For 632558/632558 co-relation queries the response was YES. [2023-08-30 10:10:35,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046125 conditions, 347645 events. 241215/347645 cut-off events. For 632558/632558 co-relation queries the response was YES. Maximal size of possible extension queue 7717. Compared 2826886 event pairs, 54128 based on Foata normal form. 5967/341277 useless extension candidates. Maximal degree in co-relation 1045985. Up to 231484 conditions per place. [2023-08-30 10:10:36,371 INFO L137 encePairwiseOnDemand]: 375/394 looper letters, 297 selfloop transitions, 52 changer transitions 0/359 dead transitions. [2023-08-30 10:10:36,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 359 transitions, 2527 flow [2023-08-30 10:10:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:10:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:10:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1569 transitions. [2023-08-30 10:10:36,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688905003625816 [2023-08-30 10:10:36,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1569 transitions. [2023-08-30 10:10:36,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1569 transitions. [2023-08-30 10:10:36,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:36,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1569 transitions. [2023-08-30 10:10:36,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.14285714285714) internal successors, (1569), 7 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:36,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:36,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:36,378 INFO L175 Difference]: Start difference. First operand has 110 places, 135 transitions, 875 flow. Second operand 7 states and 1569 transitions. [2023-08-30 10:10:36,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 359 transitions, 2527 flow [2023-08-30 10:10:37,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 359 transitions, 2514 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:10:37,965 INFO L231 Difference]: Finished difference. Result has 118 places, 167 transitions, 1401 flow [2023-08-30 10:10:37,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1401, PETRI_PLACES=118, PETRI_TRANSITIONS=167} [2023-08-30 10:10:37,966 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 32 predicate places. [2023-08-30 10:10:37,966 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 167 transitions, 1401 flow [2023-08-30 10:10:37,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:37,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:37,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:37,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:10:37,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:37,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1070481050, now seen corresponding path program 1 times [2023-08-30 10:10:37,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:37,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020074096] [2023-08-30 10:10:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:37,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:38,009 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 10:10:38,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020074096] [2023-08-30 10:10:38,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020074096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:38,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:38,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543006688] [2023-08-30 10:10:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:38,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:38,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:38,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 394 [2023-08-30 10:10:38,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 167 transitions, 1401 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:38,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:38,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 394 [2023-08-30 10:10:38,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:07,334 INFO L130 PetriNetUnfolder]: 227401/329695 cut-off events. [2023-08-30 10:11:07,334 INFO L131 PetriNetUnfolder]: For 912707/912707 co-relation queries the response was YES. [2023-08-30 10:11:08,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069290 conditions, 329695 events. 227401/329695 cut-off events. For 912707/912707 co-relation queries the response was YES. Maximal size of possible extension queue 7373. Compared 2696005 event pairs, 53436 based on Foata normal form. 5967/323709 useless extension candidates. Maximal degree in co-relation 1069144. Up to 223556 conditions per place. [2023-08-30 10:11:09,973 INFO L137 encePairwiseOnDemand]: 375/394 looper letters, 289 selfloop transitions, 51 changer transitions 0/350 dead transitions. [2023-08-30 10:11:09,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 350 transitions, 2665 flow [2023-08-30 10:11:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:11:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:11:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1569 transitions. [2023-08-30 10:11:09,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688905003625816 [2023-08-30 10:11:09,974 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1569 transitions. [2023-08-30 10:11:09,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1569 transitions. [2023-08-30 10:11:09,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:09,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1569 transitions. [2023-08-30 10:11:09,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.14285714285714) internal successors, (1569), 7 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:09,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:09,979 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:09,979 INFO L175 Difference]: Start difference. First operand has 118 places, 167 transitions, 1401 flow. Second operand 7 states and 1569 transitions. [2023-08-30 10:11:09,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 350 transitions, 2665 flow [2023-08-30 10:11:30,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 350 transitions, 2629 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:11:30,121 INFO L231 Difference]: Finished difference. Result has 123 places, 167 transitions, 1469 flow [2023-08-30 10:11:30,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1469, PETRI_PLACES=123, PETRI_TRANSITIONS=167} [2023-08-30 10:11:30,122 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 37 predicate places. [2023-08-30 10:11:30,122 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 167 transitions, 1469 flow [2023-08-30 10:11:30,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:30,122 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:30,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 10:11:30,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:11:30,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:30,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1885619434, now seen corresponding path program 1 times [2023-08-30 10:11:30,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:30,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001497956] [2023-08-30 10:11:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:30,167 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 10:11:30,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:30,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001497956] [2023-08-30 10:11:30,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001497956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:30,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:30,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:11:30,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288829079] [2023-08-30 10:11:30,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:30,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:11:30,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:30,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:11:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:11:30,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 394 [2023-08-30 10:11:30,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 167 transitions, 1469 flow. Second operand has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:30,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 394 [2023-08-30 10:11:30,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:59,246 INFO L130 PetriNetUnfolder]: 251499/362156 cut-off events. [2023-08-30 10:11:59,246 INFO L131 PetriNetUnfolder]: For 1169060/1169060 co-relation queries the response was YES. [2023-08-30 10:12:00,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190753 conditions, 362156 events. 251499/362156 cut-off events. For 1169060/1169060 co-relation queries the response was YES. Maximal size of possible extension queue 8041. Compared 2942452 event pairs, 64127 based on Foata normal form. 6018/355166 useless extension candidates. Maximal degree in co-relation 1190605. Up to 247223 conditions per place. [2023-08-30 10:12:02,138 INFO L137 encePairwiseOnDemand]: 375/394 looper letters, 306 selfloop transitions, 62 changer transitions 0/378 dead transitions. [2023-08-30 10:12:02,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 378 transitions, 3246 flow [2023-08-30 10:12:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:12:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:12:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1557 transitions. [2023-08-30 10:12:02,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645395213923132 [2023-08-30 10:12:02,140 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1557 transitions. [2023-08-30 10:12:02,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1557 transitions. [2023-08-30 10:12:02,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:02,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1557 transitions. [2023-08-30 10:12:02,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 222.42857142857142) internal successors, (1557), 7 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:02,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:02,144 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:02,144 INFO L175 Difference]: Start difference. First operand has 123 places, 167 transitions, 1469 flow. Second operand 7 states and 1557 transitions. [2023-08-30 10:12:02,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 378 transitions, 3246 flow [2023-08-30 10:12:13,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 378 transitions, 3223 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 10:12:13,724 INFO L231 Difference]: Finished difference. Result has 131 places, 196 transitions, 2084 flow [2023-08-30 10:12:13,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2084, PETRI_PLACES=131, PETRI_TRANSITIONS=196} [2023-08-30 10:12:13,725 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 45 predicate places. [2023-08-30 10:12:13,725 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 196 transitions, 2084 flow [2023-08-30 10:12:13,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:13,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:13,726 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:12:13,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 10:12:13,726 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:12:13,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1885619543, now seen corresponding path program 1 times [2023-08-30 10:12:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:13,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566809192] [2023-08-30 10:12:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:13,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:13,771 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 10:12:13,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566809192] [2023-08-30 10:12:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566809192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:13,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:13,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:12:13,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708349329] [2023-08-30 10:12:13,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:13,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:12:13,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:13,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:12:13,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:12:13,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 394 [2023-08-30 10:12:13,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 196 transitions, 2084 flow. Second operand has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:13,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:13,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 394 [2023-08-30 10:12:13,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:47,914 INFO L130 PetriNetUnfolder]: 235342/340251 cut-off events. [2023-08-30 10:12:47,915 INFO L131 PetriNetUnfolder]: For 1467203/1467203 co-relation queries the response was YES. [2023-08-30 10:12:49,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181144 conditions, 340251 events. 235342/340251 cut-off events. For 1467203/1467203 co-relation queries the response was YES. Maximal size of possible extension queue 7598. Compared 2770816 event pairs, 62855 based on Foata normal form. 6018/333772 useless extension candidates. Maximal degree in co-relation 1180989. Up to 236456 conditions per place. [2023-08-30 10:12:50,832 INFO L137 encePairwiseOnDemand]: 375/394 looper letters, 294 selfloop transitions, 58 changer transitions 0/362 dead transitions. [2023-08-30 10:12:50,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 362 transitions, 3285 flow [2023-08-30 10:12:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:12:50,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:12:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1557 transitions. [2023-08-30 10:12:50,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645395213923132 [2023-08-30 10:12:50,834 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1557 transitions. [2023-08-30 10:12:50,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1557 transitions. [2023-08-30 10:12:50,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:50,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1557 transitions. [2023-08-30 10:12:50,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 222.42857142857142) internal successors, (1557), 7 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:50,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:50,837 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 394.0) internal successors, (3152), 8 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:50,837 INFO L175 Difference]: Start difference. First operand has 131 places, 196 transitions, 2084 flow. Second operand 7 states and 1557 transitions. [2023-08-30 10:12:50,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 362 transitions, 3285 flow [2023-08-30 10:13:37,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 362 transitions, 3233 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 10:13:37,721 INFO L231 Difference]: Finished difference. Result has 136 places, 186 transitions, 2004 flow [2023-08-30 10:13:37,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2004, PETRI_PLACES=136, PETRI_TRANSITIONS=186} [2023-08-30 10:13:37,722 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 50 predicate places. [2023-08-30 10:13:37,722 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 186 transitions, 2004 flow [2023-08-30 10:13:37,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:37,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:13:37,722 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, 1, 1] [2023-08-30 10:13:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:13:37,722 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:13:37,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:13:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1221931608, now seen corresponding path program 1 times [2023-08-30 10:13:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:13:37,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203926102] [2023-08-30 10:13:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:13:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:13:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:13:37,783 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 10:13:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:13:37,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203926102] [2023-08-30 10:13:37,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203926102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:13:37,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:13:37,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:13:37,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620260504] [2023-08-30 10:13:37,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:13:37,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:13:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:13:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:13:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:13:37,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 394 [2023-08-30 10:13:37,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 186 transitions, 2004 flow. Second operand has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:37,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:13:37,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 394 [2023-08-30 10:13:37,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:14:13,867 INFO L130 PetriNetUnfolder]: 278042/401736 cut-off events. [2023-08-30 10:14:13,868 INFO L131 PetriNetUnfolder]: For 1706788/1706788 co-relation queries the response was YES. [2023-08-30 10:14:16,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414585 conditions, 401736 events. 278042/401736 cut-off events. For 1706788/1706788 co-relation queries the response was YES. Maximal size of possible extension queue 9090. Compared 3339161 event pairs, 44855 based on Foata normal form. 2922/389560 useless extension candidates. Maximal degree in co-relation 1414428. Up to 220632 conditions per place. [2023-08-30 10:14:17,394 INFO L137 encePairwiseOnDemand]: 374/394 looper letters, 497 selfloop transitions, 97 changer transitions 0/604 dead transitions. [2023-08-30 10:14:17,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 604 transitions, 5663 flow [2023-08-30 10:14:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:14:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:14:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2436 transitions. [2023-08-30 10:14:17,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620673742501153 [2023-08-30 10:14:17,397 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2436 transitions. [2023-08-30 10:14:17,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2436 transitions. [2023-08-30 10:14:17,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:14:17,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2436 transitions. [2023-08-30 10:14:17,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 221.45454545454547) internal successors, (2436), 11 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:17,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 394.0) internal successors, (4728), 12 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:17,400 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 394.0) internal successors, (4728), 12 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:17,400 INFO L175 Difference]: Start difference. First operand has 136 places, 186 transitions, 2004 flow. Second operand 11 states and 2436 transitions. [2023-08-30 10:14:17,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 604 transitions, 5663 flow [2023-08-30 10:15:19,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 604 transitions, 5618 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-30 10:15:19,481 INFO L231 Difference]: Finished difference. Result has 148 places, 233 transitions, 3081 flow [2023-08-30 10:15:19,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3081, PETRI_PLACES=148, PETRI_TRANSITIONS=233} [2023-08-30 10:15:19,482 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 62 predicate places. [2023-08-30 10:15:19,482 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 233 transitions, 3081 flow [2023-08-30 10:15:19,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:19,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:19,483 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, 1, 1] [2023-08-30 10:15:19,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 10:15:19,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:15:19,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:19,483 INFO L85 PathProgramCache]: Analyzing trace with hash -818833008, now seen corresponding path program 1 times [2023-08-30 10:15:19,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458660854] [2023-08-30 10:15:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:19,554 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 10:15:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:19,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458660854] [2023-08-30 10:15:19,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458660854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:19,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:19,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:15:19,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112551116] [2023-08-30 10:15:19,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:19,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:15:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:15:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:15:19,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 394 [2023-08-30 10:15:19,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 233 transitions, 3081 flow. Second operand has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:19,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:19,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 394 [2023-08-30 10:15:19,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:04,883 INFO L130 PetriNetUnfolder]: 283668/413022 cut-off events. [2023-08-30 10:16:04,883 INFO L131 PetriNetUnfolder]: For 2404359/2404359 co-relation queries the response was YES. [2023-08-30 10:16:07,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575902 conditions, 413022 events. 283668/413022 cut-off events. For 2404359/2404359 co-relation queries the response was YES. Maximal size of possible extension queue 9480. Compared 3500787 event pairs, 44760 based on Foata normal form. 3174/400327 useless extension candidates. Maximal degree in co-relation 1575734. Up to 228792 conditions per place. [2023-08-30 10:16:09,175 INFO L137 encePairwiseOnDemand]: 374/394 looper letters, 520 selfloop transitions, 133 changer transitions 0/663 dead transitions. [2023-08-30 10:16:09,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 663 transitions, 7253 flow [2023-08-30 10:16:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:16:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:16:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2443 transitions. [2023-08-30 10:16:09,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563682510383018 [2023-08-30 10:16:09,178 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2443 transitions. [2023-08-30 10:16:09,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2443 transitions. [2023-08-30 10:16:09,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:09,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2443 transitions. [2023-08-30 10:16:09,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 222.0909090909091) internal successors, (2443), 11 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:09,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 394.0) internal successors, (4728), 12 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:09,184 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 394.0) internal successors, (4728), 12 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:09,184 INFO L175 Difference]: Start difference. First operand has 148 places, 233 transitions, 3081 flow. Second operand 11 states and 2443 transitions. [2023-08-30 10:16:09,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 663 transitions, 7253 flow [2023-08-30 10:18:57,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 663 transitions, 7151 flow, removed 33 selfloop flow, removed 4 redundant places. [2023-08-30 10:18:57,711 INFO L231 Difference]: Finished difference. Result has 159 places, 296 transitions, 4568 flow [2023-08-30 10:18:57,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4568, PETRI_PLACES=159, PETRI_TRANSITIONS=296} [2023-08-30 10:18:57,712 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 73 predicate places. [2023-08-30 10:18:57,712 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 296 transitions, 4568 flow [2023-08-30 10:18:57,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:57,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:57,713 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:57,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 10:18:57,713 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:18:57,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash -818778090, now seen corresponding path program 1 times [2023-08-30 10:18:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:57,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425225831] [2023-08-30 10:18:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:57,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:57,777 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 10:18:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425225831] [2023-08-30 10:18:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425225831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:57,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:57,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:18:57,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298269399] [2023-08-30 10:18:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:57,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:18:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:18:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:18:57,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 394 [2023-08-30 10:18:57,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 296 transitions, 4568 flow. Second operand has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:57,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:57,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 394 [2023-08-30 10:18:57,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15