./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_23-idxsense_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_23-idxsense_nr.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 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 13:49:24,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:49:24,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:49:24,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:49:24,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:49:24,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:49:24,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:49:24,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:49:24,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:49:24,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:49:24,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:49:24,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:49:24,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:49:24,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:49:24,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:49:24,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:49:24,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:49:24,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:49:24,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:49:24,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:49:24,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:49:24,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:49:24,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:49:24,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:49:24,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:49:24,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:49:24,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:49:24,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:49:24,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:49:24,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:49:24,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:49:24,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:49:24,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:49:24,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:49:24,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:49:24,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:49:24,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:49:24,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:49:24,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:49:24,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:49:24,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:49:24,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:49:24,777 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:49:24,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:49:24,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:49:24,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:49:24,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:49:24,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:49:24,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:49:24,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:49:24,781 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:49:24,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:49:24,781 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:49:24,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:49:24,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:49:24,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:49:24,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:49:24,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:49:24,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:49:24,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:49:24,783 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:49:24,783 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:49:24,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:49:24,783 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:49:24,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:49:24,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:49:24,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:49:24,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:49:24,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:49:24,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:49:24,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:49:24,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:49:24,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:49:24,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:49:24,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:49:24,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:49:24,785 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:49:24,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:49:24,785 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:49:24,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:49:25,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:49:25,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:49:25,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:49:25,033 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:49:25,033 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:49:25,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_23-idxsense_nr.i [2023-08-30 13:49:25,960 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:49:26,141 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:49:26,142 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_23-idxsense_nr.i [2023-08-30 13:49:26,149 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fd6437b/bb730c0086d84e0a846e32924462fbbf/FLAG28791564f [2023-08-30 13:49:26,534 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fd6437b/bb730c0086d84e0a846e32924462fbbf [2023-08-30 13:49:26,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:49:26,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:49:26,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:49:26,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:49:26,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:49:26,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13afa40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26, skipping insertion in model container [2023-08-30 13:49:26,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:49:26,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:49:26,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:49:26,778 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:49:26,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:49:26,858 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:49:26,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26 WrapperNode [2023-08-30 13:49:26,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:49:26,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:49:26,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:49:26,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:49:26,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,885 INFO L138 Inliner]: procedures = 161, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2023-08-30 13:49:26,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:49:26,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:49:26,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:49:26,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:49:26,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,901 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:49:26,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:49:26,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:49:26,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:49:26,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (1/1) ... [2023-08-30 13:49:26,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:49:26,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:49:26,925 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 13:49:26,934 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 13:49:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:49:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:49:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 13:49:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:49:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:49:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 13:49:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 13:49:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:49:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:49:26,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:49:26,959 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 13:49:27,071 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:49:27,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:49:27,248 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:49:27,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:49:27,253 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-30 13:49:27,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:49:27 BoogieIcfgContainer [2023-08-30 13:49:27,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:49:27,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:49:27,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:49:27,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:49:27,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:49:26" (1/3) ... [2023-08-30 13:49:27,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1554a005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:49:27, skipping insertion in model container [2023-08-30 13:49:27,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:49:26" (2/3) ... [2023-08-30 13:49:27,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1554a005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:49:27, skipping insertion in model container [2023-08-30 13:49:27,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:49:27" (3/3) ... [2023-08-30 13:49:27,260 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2023-08-30 13:49:27,265 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:49:27,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:49:27,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 13:49:27,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:49:27,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 13:49:27,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 155 flow [2023-08-30 13:49:27,389 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2023-08-30 13:49:27,389 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:49:27,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-08-30 13:49:27,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 155 flow [2023-08-30 13:49:27,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 74 transitions, 151 flow [2023-08-30 13:49:27,399 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:49:27,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 74 transitions, 151 flow [2023-08-30 13:49:27,418 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 74 transitions, 151 flow [2023-08-30 13:49:27,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 151 flow [2023-08-30 13:49:27,433 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2023-08-30 13:49:27,434 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:49:27,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-08-30 13:49:27,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 930 [2023-08-30 13:49:28,577 INFO L134 LiptonReduction]: Checked pairs total: 1501 [2023-08-30 13:49:28,577 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-30 13:49:28,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:49:28,590 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;@64fb7059, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:49:28,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 13:49:28,591 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 13:49:28,591 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:49:28,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:28,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:49:28,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:28,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 8670, now seen corresponding path program 1 times [2023-08-30 13:49:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:28,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16337881] [2023-08-30 13:49:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:28,732 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 13:49:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:28,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16337881] [2023-08-30 13:49:28,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16337881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:28,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:28,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:49:28,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558575065] [2023-08-30 13:49:28,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:28,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:49:28,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:49:28,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:49:28,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-30 13:49:28,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:28,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-30 13:49:28,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:28,851 INFO L130 PetriNetUnfolder]: 67/160 cut-off events. [2023-08-30 13:49:28,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:49:28,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 160 events. 67/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 559 event pairs, 66 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 305. Up to 153 conditions per place. [2023-08-30 13:49:28,853 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 20 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 13:49:28,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 89 flow [2023-08-30 13:49:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:49:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:49:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-30 13:49:28,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2023-08-30 13:49:28,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-30 13:49:28,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-30 13:49:28,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:28,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-30 13:49:28,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,870 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 51 flow. Second operand 3 states and 230 transitions. [2023-08-30 13:49:28,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 89 flow [2023-08-30 13:49:28,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:49:28,873 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 48 flow [2023-08-30 13:49:28,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-30 13:49:28,876 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-08-30 13:49:28,876 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 48 flow [2023-08-30 13:49:28,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:28,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:49:28,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:49:28,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:28,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash 258283361, now seen corresponding path program 1 times [2023-08-30 13:49:28,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:28,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251379327] [2023-08-30 13:49:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:28,916 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 13:49:28,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251379327] [2023-08-30 13:49:28,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251379327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:28,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:28,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:49:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406277309] [2023-08-30 13:49:28,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:28,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:49:28,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:49:28,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:49:28,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-30 13:49:28,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:28,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-30 13:49:28,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:28,970 INFO L130 PetriNetUnfolder]: 67/161 cut-off events. [2023-08-30 13:49:28,970 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:49:28,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 161 events. 67/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 559 event pairs, 66 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 315. Up to 154 conditions per place. [2023-08-30 13:49:28,972 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 20 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-08-30 13:49:28,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 94 flow [2023-08-30 13:49:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:49:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:49:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-30 13:49:28,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2023-08-30 13:49:28,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-30 13:49:28,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-30 13:49:28,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:28,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-30 13:49:28,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,982 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 48 flow. Second operand 3 states and 230 transitions. [2023-08-30 13:49:28,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 94 flow [2023-08-30 13:49:28,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:49:28,983 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 59 flow [2023-08-30 13:49:28,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-30 13:49:28,984 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 13:49:28,984 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 59 flow [2023-08-30 13:49:28,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:28,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:28,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:49:28,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:49:28,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:28,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:28,989 INFO L85 PathProgramCache]: Analyzing trace with hash -574074831, now seen corresponding path program 1 times [2023-08-30 13:49:28,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:28,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206141490] [2023-08-30 13:49:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:28,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:29,055 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 13:49:29,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:29,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206141490] [2023-08-30 13:49:29,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206141490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:49:29,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366360117] [2023-08-30 13:49:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:29,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:49:29,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:49:29,063 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 13:49:29,099 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 13:49:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:29,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:49:29,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:49:29,158 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 13:49:29,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:49:29,169 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 13:49:29,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366360117] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:49:29,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:49:29,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 13:49:29,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345197710] [2023-08-30 13:49:29,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:49:29,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:49:29,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:49:29,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:49:29,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-08-30 13:49:29,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 59 flow. Second operand has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:29,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-08-30 13:49:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:29,242 INFO L130 PetriNetUnfolder]: 67/164 cut-off events. [2023-08-30 13:49:29,256 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:49:29,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 164 events. 67/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 559 event pairs, 66 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 328. Up to 154 conditions per place. [2023-08-30 13:49:29,258 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 20 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2023-08-30 13:49:29,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 121 flow [2023-08-30 13:49:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:49:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:49:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 436 transitions. [2023-08-30 13:49:29,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2023-08-30 13:49:29,260 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 436 transitions. [2023-08-30 13:49:29,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 436 transitions. [2023-08-30 13:49:29,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:29,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 436 transitions. [2023-08-30 13:49:29,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,263 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,263 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 59 flow. Second operand 6 states and 436 transitions. [2023-08-30 13:49:29,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 121 flow [2023-08-30 13:49:29,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 117 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 13:49:29,264 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 91 flow [2023-08-30 13:49:29,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-30 13:49:29,264 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-08-30 13:49:29,265 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 91 flow [2023-08-30 13:49:29,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:29,265 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 13:49:29,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 13:49:29,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:49:29,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:29,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash 718588769, now seen corresponding path program 2 times [2023-08-30 13:49:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181083962] [2023-08-30 13:49:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:49:29,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:29,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181083962] [2023-08-30 13:49:29,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181083962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:49:29,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405120004] [2023-08-30 13:49:29,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:49:29,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:49:29,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:49:29,570 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 13:49:29,573 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 13:49:29,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 13:49:29,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:49:29,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 13:49:29,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:49:29,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-08-30 13:49:29,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 13:49:29,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 13:49:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 13:49:29,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:49:29,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405120004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:29,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:49:29,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-30 13:49:29,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437776822] [2023-08-30 13:49:29,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:29,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:49:29,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:49:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-30 13:49:29,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-08-30 13:49:29,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:29,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-08-30 13:49:29,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:29,833 INFO L130 PetriNetUnfolder]: 51/130 cut-off events. [2023-08-30 13:49:29,833 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:49:29,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 130 events. 51/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 429 event pairs, 25 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 271. Up to 106 conditions per place. [2023-08-30 13:49:29,836 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 28 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-30 13:49:29,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 165 flow [2023-08-30 13:49:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:49:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:49:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-30 13:49:29,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-30 13:49:29,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-30 13:49:29,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-30 13:49:29,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:29,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-30 13:49:29,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,844 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 91 flow. Second operand 3 states and 235 transitions. [2023-08-30 13:49:29,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 165 flow [2023-08-30 13:49:29,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 151 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 13:49:29,846 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 102 flow [2023-08-30 13:49:29,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-30 13:49:29,847 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-30 13:49:29,847 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 102 flow [2023-08-30 13:49:29,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:29,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:29,847 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:29,854 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 13:49:30,051 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,SelfDestructingSolverStorable3 [2023-08-30 13:49:30,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:30,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:30,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1361070110, now seen corresponding path program 1 times [2023-08-30 13:49:30,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:30,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879223911] [2023-08-30 13:49:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:30,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:49:30,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879223911] [2023-08-30 13:49:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879223911] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:49:30,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281229458] [2023-08-30 13:49:30,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:30,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:49:30,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:49:30,134 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 13:49:30,136 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 13:49:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:30,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:49:30,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:49:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:49:30,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:49:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:49:30,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281229458] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:49:30,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:49:30,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-30 13:49:30,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945743137] [2023-08-30 13:49:30,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:49:30,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 13:49:30,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:30,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 13:49:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 13:49:30,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-08-30 13:49:30,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 69.5) internal successors, (834), 12 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:30,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-08-30 13:49:30,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:30,304 INFO L130 PetriNetUnfolder]: 51/136 cut-off events. [2023-08-30 13:49:30,304 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 13:49:30,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 136 events. 51/136 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 433 event pairs, 43 based on Foata normal form. 6/117 useless extension candidates. Maximal degree in co-relation 328. Up to 122 conditions per place. [2023-08-30 13:49:30,307 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 22 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2023-08-30 13:49:30,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 204 flow [2023-08-30 13:49:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:49:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:49:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 853 transitions. [2023-08-30 13:49:30,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041371158392435 [2023-08-30 13:49:30,309 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 853 transitions. [2023-08-30 13:49:30,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 853 transitions. [2023-08-30 13:49:30,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:30,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 853 transitions. [2023-08-30 13:49:30,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.08333333333333) internal successors, (853), 12 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 141.0) internal successors, (1833), 13 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,313 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 141.0) internal successors, (1833), 13 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,313 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 102 flow. Second operand 12 states and 853 transitions. [2023-08-30 13:49:30,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 204 flow [2023-08-30 13:49:30,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 34 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:49:30,316 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 183 flow [2023-08-30 13:49:30,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=183, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2023-08-30 13:49:30,318 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-08-30 13:49:30,318 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 183 flow [2023-08-30 13:49:30,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.5) internal successors, (834), 12 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:30,319 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:30,327 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 13:49:30,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:49:30,524 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:30,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -429737442, now seen corresponding path program 2 times [2023-08-30 13:49:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103217673] [2023-08-30 13:49:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:30,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:49:30,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:30,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103217673] [2023-08-30 13:49:30,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103217673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:30,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:30,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:49:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800493850] [2023-08-30 13:49:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:30,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:49:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:49:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 13:49:30,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-08-30 13:49:30,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:30,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-08-30 13:49:30,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:30,855 INFO L130 PetriNetUnfolder]: 49/130 cut-off events. [2023-08-30 13:49:30,855 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 13:49:30,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 130 events. 49/130 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 392 event pairs, 20 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 329. Up to 90 conditions per place. [2023-08-30 13:49:30,856 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 31 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-08-30 13:49:30,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 35 transitions, 249 flow [2023-08-30 13:49:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:49:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:49:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-30 13:49:30,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2023-08-30 13:49:30,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-30 13:49:30,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-30 13:49:30,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:30,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-30 13:49:30,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,859 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 183 flow. Second operand 3 states and 229 transitions. [2023-08-30 13:49:30,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 35 transitions, 249 flow [2023-08-30 13:49:30,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 201 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 13:49:30,863 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 133 flow [2023-08-30 13:49:30,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-08-30 13:49:30,865 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-08-30 13:49:30,865 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 133 flow [2023-08-30 13:49:30,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:30,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:30,865 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:30,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 13:49:30,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:30,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:30,868 INFO L85 PathProgramCache]: Analyzing trace with hash -429730039, now seen corresponding path program 1 times [2023-08-30 13:49:30,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:30,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548774481] [2023-08-30 13:49:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:30,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:49:31,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:31,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548774481] [2023-08-30 13:49:31,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548774481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:31,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:31,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:49:31,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237734268] [2023-08-30 13:49:31,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:31,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:49:31,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:49:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 13:49:31,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-30 13:49:31,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:31,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-30 13:49:31,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:31,077 INFO L130 PetriNetUnfolder]: 33/98 cut-off events. [2023-08-30 13:49:31,077 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-30 13:49:31,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 98 events. 33/98 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 225 event pairs, 19 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 235. Up to 53 conditions per place. [2023-08-30 13:49:31,077 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 31 selfloop transitions, 4 changer transitions 4/40 dead transitions. [2023-08-30 13:49:31,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 229 flow [2023-08-30 13:49:31,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:49:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:49:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-30 13:49:31,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2023-08-30 13:49:31,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-30 13:49:31,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-30 13:49:31,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:31,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-30 13:49:31,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,080 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 133 flow. Second operand 3 states and 233 transitions. [2023-08-30 13:49:31,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 229 flow [2023-08-30 13:49:31,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:49:31,082 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 147 flow [2023-08-30 13:49:31,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-08-30 13:49:31,082 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-08-30 13:49:31,083 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 147 flow [2023-08-30 13:49:31,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:31,083 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:31,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 13:49:31,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:31,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash 400852491, now seen corresponding path program 1 times [2023-08-30 13:49:31,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:31,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617317202] [2023-08-30 13:49:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:49:31,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:31,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617317202] [2023-08-30 13:49:31,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617317202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:31,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:31,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 13:49:31,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050173401] [2023-08-30 13:49:31,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:31,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:49:31,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:49:31,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:49:31,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-30 13:49:31,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:31,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-30 13:49:31,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:31,211 INFO L130 PetriNetUnfolder]: 17/66 cut-off events. [2023-08-30 13:49:31,211 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 13:49:31,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 66 events. 17/66 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 2 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 182. Up to 38 conditions per place. [2023-08-30 13:49:31,212 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 33 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-30 13:49:31,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 235 flow [2023-08-30 13:49:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:49:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:49:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-30 13:49:31,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-08-30 13:49:31,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-30 13:49:31,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-30 13:49:31,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:31,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-30 13:49:31,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,215 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 147 flow. Second operand 3 states and 227 transitions. [2023-08-30 13:49:31,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 235 flow [2023-08-30 13:49:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 37 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:49:31,216 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 151 flow [2023-08-30 13:49:31,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2023-08-30 13:49:31,217 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-30 13:49:31,217 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 151 flow [2023-08-30 13:49:31,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:31,217 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:31,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 13:49:31,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:31,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1687487447, now seen corresponding path program 1 times [2023-08-30 13:49:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:31,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836273310] [2023-08-30 13:49:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:31,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:49:31,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836273310] [2023-08-30 13:49:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836273310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:31,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:31,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 13:49:31,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348768324] [2023-08-30 13:49:31,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:31,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:49:31,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:49:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:49:31,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 141 [2023-08-30 13:49:31,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:31,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 141 [2023-08-30 13:49:31,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:31,506 INFO L130 PetriNetUnfolder]: 17/65 cut-off events. [2023-08-30 13:49:31,506 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-30 13:49:31,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 65 events. 17/65 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 6 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 185. Up to 28 conditions per place. [2023-08-30 13:49:31,507 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 32 selfloop transitions, 6 changer transitions 2/41 dead transitions. [2023-08-30 13:49:31,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 251 flow [2023-08-30 13:49:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:49:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:49:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2023-08-30 13:49:31,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2023-08-30 13:49:31,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 355 transitions. [2023-08-30 13:49:31,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 355 transitions. [2023-08-30 13:49:31,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:31,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 355 transitions. [2023-08-30 13:49:31,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,511 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 151 flow. Second operand 5 states and 355 transitions. [2023-08-30 13:49:31,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 251 flow [2023-08-30 13:49:31,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 41 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:49:31,512 INFO L231 Difference]: Finished difference. Result has 52 places, 31 transitions, 155 flow [2023-08-30 13:49:31,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=31} [2023-08-30 13:49:31,513 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-08-30 13:49:31,513 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 31 transitions, 155 flow [2023-08-30 13:49:31,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:31,513 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:31,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 13:49:31,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:31,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:31,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2110340239, now seen corresponding path program 1 times [2023-08-30 13:49:31,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:31,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395694572] [2023-08-30 13:49:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:31,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:49:31,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:31,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395694572] [2023-08-30 13:49:31,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395694572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:31,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:31,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:49:31,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176310757] [2023-08-30 13:49:31,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:31,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:49:31,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:49:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:49:31,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-08-30 13:49:31,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 31 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:31,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-08-30 13:49:31,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:31,641 INFO L130 PetriNetUnfolder]: 17/63 cut-off events. [2023-08-30 13:49:31,642 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-08-30 13:49:31,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 63 events. 17/63 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 10 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 184. Up to 32 conditions per place. [2023-08-30 13:49:31,642 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 21 selfloop transitions, 3 changer transitions 9/34 dead transitions. [2023-08-30 13:49:31,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 34 transitions, 225 flow [2023-08-30 13:49:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:49:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:49:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-30 13:49:31,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-08-30 13:49:31,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-30 13:49:31,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-30 13:49:31,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:31,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-30 13:49:31,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,646 INFO L175 Difference]: Start difference. First operand has 52 places, 31 transitions, 155 flow. Second operand 3 states and 227 transitions. [2023-08-30 13:49:31,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 34 transitions, 225 flow [2023-08-30 13:49:31,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 34 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:49:31,648 INFO L231 Difference]: Finished difference. Result has 51 places, 25 transitions, 128 flow [2023-08-30 13:49:31,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=3, PETRI_FLOW=128, PETRI_PLACES=51, PETRI_TRANSITIONS=25} [2023-08-30 13:49:31,649 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-08-30 13:49:31,649 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 128 flow [2023-08-30 13:49:31,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:31,650 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:31,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 13:49:31,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:31,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:31,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1202087536, now seen corresponding path program 1 times [2023-08-30 13:49:31,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:31,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919889141] [2023-08-30 13:49:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:31,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:49:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:31,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919889141] [2023-08-30 13:49:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919889141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:31,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:31,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 13:49:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086063609] [2023-08-30 13:49:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:31,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:49:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:49:31,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 13:49:31,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2023-08-30 13:49:31,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:31,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2023-08-30 13:49:31,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:31,791 INFO L130 PetriNetUnfolder]: 5/33 cut-off events. [2023-08-30 13:49:31,792 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-08-30 13:49:31,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 33 events. 5/33 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 4 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 96. Up to 16 conditions per place. [2023-08-30 13:49:31,792 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 18 selfloop transitions, 5 changer transitions 1/25 dead transitions. [2023-08-30 13:49:31,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 25 transitions, 171 flow [2023-08-30 13:49:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:49:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:49:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2023-08-30 13:49:31,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46099290780141844 [2023-08-30 13:49:31,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 325 transitions. [2023-08-30 13:49:31,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 325 transitions. [2023-08-30 13:49:31,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:31,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 325 transitions. [2023-08-30 13:49:31,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,796 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,796 INFO L175 Difference]: Start difference. First operand has 51 places, 25 transitions, 128 flow. Second operand 5 states and 325 transitions. [2023-08-30 13:49:31,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 25 transitions, 171 flow [2023-08-30 13:49:31,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 25 transitions, 155 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 13:49:31,797 INFO L231 Difference]: Finished difference. Result has 44 places, 24 transitions, 114 flow [2023-08-30 13:49:31,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2023-08-30 13:49:31,798 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-30 13:49:31,798 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 114 flow [2023-08-30 13:49:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:31,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:31,798 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:31,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 13:49:31,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 13:49:31,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:31,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1202087540, now seen corresponding path program 1 times [2023-08-30 13:49:31,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:31,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365605114] [2023-08-30 13:49:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:31,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:49:32,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:32,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365605114] [2023-08-30 13:49:32,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365605114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:49:32,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:49:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 13:49:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009848845] [2023-08-30 13:49:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:49:32,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:49:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:32,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:49:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:49:32,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2023-08-30 13:49:32,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:32,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:32,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2023-08-30 13:49:32,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:49:32,085 INFO L130 PetriNetUnfolder]: 5/32 cut-off events. [2023-08-30 13:49:32,085 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-30 13:49:32,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 32 events. 5/32 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 4 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 91. Up to 27 conditions per place. [2023-08-30 13:49:32,085 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-30 13:49:32,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 24 transitions, 159 flow [2023-08-30 13:49:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:49:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:49:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 386 transitions. [2023-08-30 13:49:32,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562647754137116 [2023-08-30 13:49:32,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 386 transitions. [2023-08-30 13:49:32,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 386 transitions. [2023-08-30 13:49:32,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:49:32,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 386 transitions. [2023-08-30 13:49:32,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:32,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:32,089 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:32,089 INFO L175 Difference]: Start difference. First operand has 44 places, 24 transitions, 114 flow. Second operand 6 states and 386 transitions. [2023-08-30 13:49:32,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 24 transitions, 159 flow [2023-08-30 13:49:32,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 24 transitions, 147 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 13:49:32,090 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-30 13:49:32,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-30 13:49:32,091 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-30 13:49:32,091 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-30 13:49:32,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:32,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-08-30 13:49:32,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-30 13:49:32,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-30 13:49:32,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 13:49:32,095 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:49:32,098 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 13:49:32,098 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 13:49:32,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:49:32 BasicIcfg [2023-08-30 13:49:32,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 13:49:32,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 13:49:32,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 13:49:32,102 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 13:49:32,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:49:27" (3/4) ... [2023-08-30 13:49:32,104 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 13:49:32,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 13:49:32,111 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-08-30 13:49:32,111 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 13:49:32,111 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 13:49:32,134 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 13:49:32,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 13:49:32,134 INFO L158 Benchmark]: Toolchain (without parser) took 5596.73ms. Allocated memory was 71.3MB in the beginning and 146.8MB in the end (delta: 75.5MB). Free memory was 46.1MB in the beginning and 69.3MB in the end (delta: -23.2MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2023-08-30 13:49:32,135 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory is still 49.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 13:49:32,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.24ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 45.8MB in the beginning and 78.1MB in the end (delta: -32.3MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2023-08-30 13:49:32,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.25ms. Allocated memory is still 100.7MB. Free memory was 78.1MB in the beginning and 76.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 13:49:32,135 INFO L158 Benchmark]: Boogie Preprocessor took 17.51ms. Allocated memory is still 100.7MB. Free memory was 76.2MB in the beginning and 74.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 13:49:32,135 INFO L158 Benchmark]: RCFGBuilder took 350.53ms. Allocated memory is still 100.7MB. Free memory was 74.6MB in the beginning and 61.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 13:49:32,136 INFO L158 Benchmark]: TraceAbstraction took 4846.17ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 61.0MB in the beginning and 71.4MB in the end (delta: -10.4MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2023-08-30 13:49:32,136 INFO L158 Benchmark]: Witness Printer took 32.00ms. Allocated memory is still 146.8MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 13:49:32,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory is still 49.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.24ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 45.8MB in the beginning and 78.1MB in the end (delta: -32.3MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.25ms. Allocated memory is still 100.7MB. Free memory was 78.1MB in the beginning and 76.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.51ms. Allocated memory is still 100.7MB. Free memory was 76.2MB in the beginning and 74.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 350.53ms. Allocated memory is still 100.7MB. Free memory was 74.6MB in the beginning and 61.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4846.17ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 61.0MB in the beginning and 71.4MB in the end (delta: -10.4MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. * Witness Printer took 32.00ms. Allocated memory is still 146.8MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 76 PlacesBefore, 27 PlacesAfterwards, 74 TransitionsBefore, 24 TransitionsAfterwards, 930 CoEnabledTransitionPairs, 4 FixpointIterations, 23 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 1501 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 989, independent: 889, independent conditional: 0, independent unconditional: 889, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 507, independent: 477, independent conditional: 0, independent unconditional: 477, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 989, independent: 412, independent conditional: 0, independent unconditional: 412, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 507, unknown conditional: 0, unknown unconditional: 507] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 91 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 564 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 929 IncrementalHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 51 mSDtfsCounter, 929 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=5, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 211 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 1469 SizeOfPredicates, 3 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 395/438 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 13:49:32,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE