./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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_07-tricky_address2.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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:12:06,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:12:06,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:12:06,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:12:06,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:12:06,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:12:06,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:12:06,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:12:06,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:12:06,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:12:06,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:12:06,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:12:06,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:12:06,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:12:06,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:12:06,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:12:06,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:12:06,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:12:06,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:12:06,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:12:06,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:12:06,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:12:06,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:12:06,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:12:06,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:12:06,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:12:06,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:12:06,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:12:06,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:12:06,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:12:06,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:12:06,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:12:06,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:12:06,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:12:06,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:12:06,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:12:06,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:12:06,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:12:06,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:12:06,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:12:06,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:12:06,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:12:06,696 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:12:06,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:12:06,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:12:06,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:12:06,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:12:06,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:12:06,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:12:06,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:12:06,701 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:12:06,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:12:06,702 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:12:06,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:12:06,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:12:06,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:12:06,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:12:06,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:12:06,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:12:06,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:12:06,704 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:12:06,704 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:12:06,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:12:06,704 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:12:06,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:12:06,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:12:06,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:12:06,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:12:06,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:12:06,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:12:06,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:12:06,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:12:06,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:12:06,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:12:06,707 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:12:06,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:12:06,707 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:12:06,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:12:06,707 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:12:06,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:12:07,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:12:07,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:12:07,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:12:07,020 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:12:07,020 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:12:07,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-09-01 06:12:08,321 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:12:08,666 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:12:08,667 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-09-01 06:12:08,687 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/999d6eeba/2b87f7e872754817971b263f4f471ce6/FLAGca82b6f1d [2023-09-01 06:12:08,700 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/999d6eeba/2b87f7e872754817971b263f4f471ce6 [2023-09-01 06:12:08,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:12:08,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:12:08,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:12:08,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:12:08,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:12:08,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:12:08" (1/1) ... [2023-09-01 06:12:08,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318f5d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:08, skipping insertion in model container [2023-09-01 06:12:08,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:12:08" (1/1) ... [2023-09-01 06:12:08,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:12:08,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:12:09,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:12:09,248 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:12:09,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:12:09,422 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:12:09,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09 WrapperNode [2023-09-01 06:12:09,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:12:09,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:12:09,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:12:09,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:12:09,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,492 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-09-01 06:12:09,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:12:09,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:12:09,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:12:09,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:12:09,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:12:09,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:12:09,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:12:09,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:12:09,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (1/1) ... [2023-09-01 06:12:09,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:12:09,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:12:09,564 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) [2023-09-01 06:12:09,597 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 [2023-09-01 06:12:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:12:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:12:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:12:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:12:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:12:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:12:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:12:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:12:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:12:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:12:09,619 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:12:09,799 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:12:09,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:12:10,031 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:12:10,037 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:12:10,040 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-09-01 06:12:10,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:12:10 BoogieIcfgContainer [2023-09-01 06:12:10,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:12:10,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:12:10,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:12:10,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:12:10,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:12:08" (1/3) ... [2023-09-01 06:12:10,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63349aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:12:10, skipping insertion in model container [2023-09-01 06:12:10,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:09" (2/3) ... [2023-09-01 06:12:10,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63349aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:12:10, skipping insertion in model container [2023-09-01 06:12:10,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:12:10" (3/3) ... [2023-09-01 06:12:10,052 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-09-01 06:12:10,059 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:12:10,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:12:10,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 06:12:10,067 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:12:10,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:12:10,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 82 transitions, 169 flow [2023-09-01 06:12:10,222 INFO L130 PetriNetUnfolder]: 4/81 cut-off events. [2023-09-01 06:12:10,223 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:12:10,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 4/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-09-01 06:12:10,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 82 transitions, 169 flow [2023-09-01 06:12:10,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 81 transitions, 165 flow [2023-09-01 06:12:10,238 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:12:10,251 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 81 transitions, 165 flow [2023-09-01 06:12:10,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 81 transitions, 165 flow [2023-09-01 06:12:10,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 81 transitions, 165 flow [2023-09-01 06:12:10,299 INFO L130 PetriNetUnfolder]: 4/81 cut-off events. [2023-09-01 06:12:10,300 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:12:10,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 4/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-09-01 06:12:10,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 988 [2023-09-01 06:12:12,139 INFO L134 LiptonReduction]: Checked pairs total: 1232 [2023-09-01 06:12:12,140 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-09-01 06:12:12,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:12:12,157 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;@5b1fb705, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:12:12,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-09-01 06:12:12,159 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 06:12:12,159 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:12:12,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:12,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 06:12:12,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:12,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash 10024, now seen corresponding path program 1 times [2023-09-01 06:12:12,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:12,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617328225] [2023-09-01 06:12:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:12,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:12,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:12,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617328225] [2023-09-01 06:12:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617328225] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:12:12,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:12:12,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 06:12:12,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713703730] [2023-09-01 06:12:12,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:12:12,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:12:12,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:12,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:12:12,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:12:12,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 162 [2023-09-01 06:12:12,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:12,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 162 [2023-09-01 06:12:12,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:12,459 INFO L130 PetriNetUnfolder]: 37/90 cut-off events. [2023-09-01 06:12:12,462 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:12:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 90 events. 37/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 284 event pairs, 36 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 168. Up to 90 conditions per place. [2023-09-01 06:12:12,465 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 16 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-09-01 06:12:12,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 75 flow [2023-09-01 06:12:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:12:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:12:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-09-01 06:12:12,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2023-09-01 06:12:12,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-09-01 06:12:12,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-09-01 06:12:12,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:12,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-09-01 06:12:12,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,499 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 3 states and 244 transitions. [2023-09-01 06:12:12,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 75 flow [2023-09-01 06:12:12,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:12:12,503 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 50 flow [2023-09-01 06:12:12,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-09-01 06:12:12,509 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-09-01 06:12:12,510 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 50 flow [2023-09-01 06:12:12,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:12,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 06:12:12,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:12:12,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:12,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash 311623, now seen corresponding path program 1 times [2023-09-01 06:12:12,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:12,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885346552] [2023-09-01 06:12:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:12,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:12,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:12,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885346552] [2023-09-01 06:12:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885346552] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:12:12,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657077754] [2023-09-01 06:12:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:12,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:12:12,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:12:12,609 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) [2023-09-01 06:12:12,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 06:12:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:12,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:12:12,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:12:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:12,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:12:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657077754] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:12:12,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:12:12,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 06:12:12,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205988291] [2023-09-01 06:12:12,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:12:12,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:12:12,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:12:12,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:12:12,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 162 [2023-09-01 06:12:12,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:12,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 162 [2023-09-01 06:12:12,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:12,821 INFO L130 PetriNetUnfolder]: 37/89 cut-off events. [2023-09-01 06:12:12,821 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:12:12,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 89 events. 37/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 282 event pairs, 36 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 178. Up to 88 conditions per place. [2023-09-01 06:12:12,822 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 15 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-09-01 06:12:12,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 80 flow [2023-09-01 06:12:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:12:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:12:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-09-01 06:12:12,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2023-09-01 06:12:12,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-09-01 06:12:12,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-09-01 06:12:12,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:12,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-09-01 06:12:12,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,830 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,830 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 50 flow. Second operand 4 states and 314 transitions. [2023-09-01 06:12:12,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 80 flow [2023-09-01 06:12:12,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 76 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 06:12:12,831 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 46 flow [2023-09-01 06:12:12,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-09-01 06:12:12,832 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-09-01 06:12:12,832 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 46 flow [2023-09-01 06:12:12,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:12,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:12,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:12:12,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 06:12:13,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:12:13,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:13,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash 694699110, now seen corresponding path program 1 times [2023-09-01 06:12:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665613041] [2023-09-01 06:12:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:13,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665613041] [2023-09-01 06:12:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665613041] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:12:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661414275] [2023-09-01 06:12:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:13,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:12:13,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:12:13,164 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) [2023-09-01 06:12:13,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 06:12:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:13,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:12:13,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:12:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:13,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:12:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:13,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661414275] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:12:13,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:12:13,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 06:12:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308069852] [2023-09-01 06:12:13,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:12:13,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:12:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:12:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:12:13,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 162 [2023-09-01 06:12:13,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 46 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:13,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 162 [2023-09-01 06:12:13,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:13,377 INFO L130 PetriNetUnfolder]: 37/92 cut-off events. [2023-09-01 06:12:13,377 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:12:13,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 92 events. 37/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 282 event pairs, 36 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 187. Up to 89 conditions per place. [2023-09-01 06:12:13,378 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 15 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-09-01 06:12:13,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 98 flow [2023-09-01 06:12:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:12:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:12:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 461 transitions. [2023-09-01 06:12:13,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742798353909465 [2023-09-01 06:12:13,381 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 461 transitions. [2023-09-01 06:12:13,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 461 transitions. [2023-09-01 06:12:13,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:13,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 461 transitions. [2023-09-01 06:12:13,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,386 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,386 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 46 flow. Second operand 6 states and 461 transitions. [2023-09-01 06:12:13,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 98 flow [2023-09-01 06:12:13,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 95 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:12:13,387 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 79 flow [2023-09-01 06:12:13,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-09-01 06:12:13,388 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 8 predicate places. [2023-09-01 06:12:13,388 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 79 flow [2023-09-01 06:12:13,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:13,389 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-09-01 06:12:13,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 06:12:13,599 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,SelfDestructingSolverStorable2 [2023-09-01 06:12:13,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:13,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash 964747045, now seen corresponding path program 2 times [2023-09-01 06:12:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987425376] [2023-09-01 06:12:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:13,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987425376] [2023-09-01 06:12:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987425376] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:12:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694761808] [2023-09-01 06:12:13,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:12:13,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:12:13,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:12:13,707 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) [2023-09-01 06:12:13,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 06:12:13,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 06:12:13,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:12:13,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 06:12:13,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:12:13,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-09-01 06:12:13,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 06:12:13,873 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 [2023-09-01 06:12:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 06:12:13,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:12:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694761808] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:12:13,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:12:13,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-09-01 06:12:13,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947971247] [2023-09-01 06:12:13,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:12:13,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:12:13,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:13,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:12:13,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-09-01 06:12:13,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 162 [2023-09-01 06:12:13,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:13,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 162 [2023-09-01 06:12:13,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:13,959 INFO L130 PetriNetUnfolder]: 21/60 cut-off events. [2023-09-01 06:12:13,959 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 06:12:13,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 60 events. 21/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 141 event pairs, 10 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 133. Up to 41 conditions per place. [2023-09-01 06:12:13,960 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 19 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2023-09-01 06:12:13,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 143 flow [2023-09-01 06:12:13,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:12:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:12:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-09-01 06:12:13,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041152263374485 [2023-09-01 06:12:13,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-09-01 06:12:13,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-09-01 06:12:13,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:13,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-09-01 06:12:13,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,965 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 79 flow. Second operand 3 states and 245 transitions. [2023-09-01 06:12:13,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 143 flow [2023-09-01 06:12:13,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 129 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 06:12:13,966 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 82 flow [2023-09-01 06:12:13,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-09-01 06:12:13,967 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2023-09-01 06:12:13,967 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 82 flow [2023-09-01 06:12:13,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:13,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:13,968 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:12:13,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 06:12:14,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:12:14,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:14,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1141561628, now seen corresponding path program 1 times [2023-09-01 06:12:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31774879] [2023-09-01 06:12:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:14,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31774879] [2023-09-01 06:12:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31774879] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:12:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875179237] [2023-09-01 06:12:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:14,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:12:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:12:14,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:12:14,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 06:12:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:14,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:12:14,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:12:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:14,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:12:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:12:14,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875179237] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:12:14,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:12:14,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 06:12:14,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461220151] [2023-09-01 06:12:14,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:12:14,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 06:12:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 06:12:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 06:12:14,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 162 [2023-09-01 06:12:14,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 82 flow. Second operand has 13 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:14,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:14,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 162 [2023-09-01 06:12:14,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:14,602 INFO L130 PetriNetUnfolder]: 17/58 cut-off events. [2023-09-01 06:12:14,603 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 06:12:14,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 58 events. 17/58 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 117 event pairs, 16 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 155. Up to 49 conditions per place. [2023-09-01 06:12:14,604 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 15 selfloop transitions, 11 changer transitions 0/26 dead transitions. [2023-09-01 06:12:14,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 170 flow [2023-09-01 06:12:14,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 06:12:14,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 06:12:14,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 908 transitions. [2023-09-01 06:12:14,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670781893004115 [2023-09-01 06:12:14,607 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 908 transitions. [2023-09-01 06:12:14,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 908 transitions. [2023-09-01 06:12:14,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:14,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 908 transitions. [2023-09-01 06:12:14,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 75.66666666666667) internal successors, (908), 12 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:14,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 162.0) internal successors, (2106), 13 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:14,614 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 162.0) internal successors, (2106), 13 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:14,614 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 82 flow. Second operand 12 states and 908 transitions. [2023-09-01 06:12:14,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 170 flow [2023-09-01 06:12:14,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 26 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:12:14,618 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 163 flow [2023-09-01 06:12:14,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2023-09-01 06:12:14,621 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 26 predicate places. [2023-09-01 06:12:14,621 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 163 flow [2023-09-01 06:12:14,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:14,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:14,623 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:12:14,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 06:12:14,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:12:14,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:14,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:14,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1295549060, now seen corresponding path program 2 times [2023-09-01 06:12:14,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:14,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482457047] [2023-09-01 06:12:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:14,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:12:15,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482457047] [2023-09-01 06:12:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482457047] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:12:15,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:12:15,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 06:12:15,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593160459] [2023-09-01 06:12:15,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:12:15,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:12:15,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:12:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:12:15,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-09-01 06:12:15,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:15,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-09-01 06:12:15,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:15,420 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2023-09-01 06:12:15,421 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-09-01 06:12:15,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 55 events. 16/55 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 106 event pairs, 4 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 163. Up to 21 conditions per place. [2023-09-01 06:12:15,421 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 25 selfloop transitions, 5 changer transitions 5/35 dead transitions. [2023-09-01 06:12:15,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 35 transitions, 253 flow [2023-09-01 06:12:15,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:12:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:12:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 423 transitions. [2023-09-01 06:12:15,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2023-09-01 06:12:15,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 423 transitions. [2023-09-01 06:12:15,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 423 transitions. [2023-09-01 06:12:15,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:15,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 423 transitions. [2023-09-01 06:12:15,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,427 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,427 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 163 flow. Second operand 6 states and 423 transitions. [2023-09-01 06:12:15,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 35 transitions, 253 flow [2023-09-01 06:12:15,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 205 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-09-01 06:12:15,430 INFO L231 Difference]: Finished difference. Result has 46 places, 25 transitions, 121 flow [2023-09-01 06:12:15,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2023-09-01 06:12:15,431 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-09-01 06:12:15,431 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 121 flow [2023-09-01 06:12:15,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:15,431 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:12:15,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:12:15,432 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:15,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:15,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1295549059, now seen corresponding path program 1 times [2023-09-01 06:12:15,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:15,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029952783] [2023-09-01 06:12:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:15,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:12:15,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:15,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029952783] [2023-09-01 06:12:15,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029952783] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:12:15,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:12:15,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 06:12:15,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573629220] [2023-09-01 06:12:15,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:12:15,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:12:15,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:12:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:12:15,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-09-01 06:12:15,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 25 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:15,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-09-01 06:12:15,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:15,912 INFO L130 PetriNetUnfolder]: 13/48 cut-off events. [2023-09-01 06:12:15,912 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 06:12:15,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 48 events. 13/48 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 4 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 135. Up to 21 conditions per place. [2023-09-01 06:12:15,913 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 20 selfloop transitions, 2 changer transitions 9/31 dead transitions. [2023-09-01 06:12:15,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 193 flow [2023-09-01 06:12:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:12:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:12:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2023-09-01 06:12:15,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43106995884773663 [2023-09-01 06:12:15,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 419 transitions. [2023-09-01 06:12:15,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 419 transitions. [2023-09-01 06:12:15,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:15,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 419 transitions. [2023-09-01 06:12:15,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,918 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,918 INFO L175 Difference]: Start difference. First operand has 46 places, 25 transitions, 121 flow. Second operand 6 states and 419 transitions. [2023-09-01 06:12:15,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 193 flow [2023-09-01 06:12:15,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 06:12:15,920 INFO L231 Difference]: Finished difference. Result has 46 places, 21 transitions, 103 flow [2023-09-01 06:12:15,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2023-09-01 06:12:15,920 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-09-01 06:12:15,921 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 103 flow [2023-09-01 06:12:15,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:15,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:15,921 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:12:15,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:12:15,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:15,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1295555326, now seen corresponding path program 1 times [2023-09-01 06:12:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:15,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867146002] [2023-09-01 06:12:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:15,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:12:16,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867146002] [2023-09-01 06:12:16,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867146002] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:12:16,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:12:16,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 06:12:16,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731681976] [2023-09-01 06:12:16,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:12:16,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:12:16,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:12:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:12:16,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-09-01 06:12:16,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 103 flow. Second operand has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:16,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-09-01 06:12:16,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:16,384 INFO L130 PetriNetUnfolder]: 8/36 cut-off events. [2023-09-01 06:12:16,384 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-09-01 06:12:16,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 36 events. 8/36 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 2 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 101. Up to 18 conditions per place. [2023-09-01 06:12:16,384 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 20 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2023-09-01 06:12:16,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 25 transitions, 163 flow [2023-09-01 06:12:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:12:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:12:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 346 transitions. [2023-09-01 06:12:16,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271604938271605 [2023-09-01 06:12:16,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 346 transitions. [2023-09-01 06:12:16,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 346 transitions. [2023-09-01 06:12:16,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:16,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 346 transitions. [2023-09-01 06:12:16,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,389 INFO L175 Difference]: Start difference. First operand has 46 places, 21 transitions, 103 flow. Second operand 5 states and 346 transitions. [2023-09-01 06:12:16,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 25 transitions, 163 flow [2023-09-01 06:12:16,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 25 transitions, 157 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 06:12:16,391 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 125 flow [2023-09-01 06:12:16,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2023-09-01 06:12:16,392 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 21 predicate places. [2023-09-01 06:12:16,392 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 125 flow [2023-09-01 06:12:16,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:16,392 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:12:16,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:12:16,393 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:16,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:16,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1264260859, now seen corresponding path program 1 times [2023-09-01 06:12:16,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:16,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160027808] [2023-09-01 06:12:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:16,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:12:16,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:16,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160027808] [2023-09-01 06:12:16,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160027808] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:12:16,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:12:16,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 06:12:16,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885918074] [2023-09-01 06:12:16,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:12:16,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:12:16,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:12:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:12:16,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 162 [2023-09-01 06:12:16,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:16,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 162 [2023-09-01 06:12:16,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:16,882 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2023-09-01 06:12:16,882 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-09-01 06:12:16,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 31 events. 5/31 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 3 based on Foata normal form. 4/35 useless extension candidates. Maximal degree in co-relation 98. Up to 18 conditions per place. [2023-09-01 06:12:16,883 INFO L137 encePairwiseOnDemand]: 158/162 looper letters, 17 selfloop transitions, 3 changer transitions 2/22 dead transitions. [2023-09-01 06:12:16,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 22 transitions, 159 flow [2023-09-01 06:12:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:12:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:12:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 348 transitions. [2023-09-01 06:12:16,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2023-09-01 06:12:16,885 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 348 transitions. [2023-09-01 06:12:16,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 348 transitions. [2023-09-01 06:12:16,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:16,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 348 transitions. [2023-09-01 06:12:16,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,889 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,889 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 125 flow. Second operand 5 states and 348 transitions. [2023-09-01 06:12:16,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 22 transitions, 159 flow [2023-09-01 06:12:16,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 22 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 06:12:16,905 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 105 flow [2023-09-01 06:12:16,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2023-09-01 06:12:16,907 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-09-01 06:12:16,908 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 105 flow [2023-09-01 06:12:16,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:16,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:12:16,909 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:12:16,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:12:16,909 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:12:16,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:12:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1264260826, now seen corresponding path program 2 times [2023-09-01 06:12:16,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:12:16,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450611451] [2023-09-01 06:12:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:12:16,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:12:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:12:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:12:17,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:12:17,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450611451] [2023-09-01 06:12:17,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450611451] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:12:17,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:12:17,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 06:12:17,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612877498] [2023-09-01 06:12:17,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:12:17,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:12:17,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:12:17,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:12:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:12:17,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 162 [2023-09-01 06:12:17,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:17,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:12:17,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 162 [2023-09-01 06:12:17,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:12:17,323 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-09-01 06:12:17,324 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 06:12:17,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 21 events. 2/21 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 1 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 67. Up to 15 conditions per place. [2023-09-01 06:12:17,324 INFO L137 encePairwiseOnDemand]: 158/162 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-09-01 06:12:17,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 19 transitions, 137 flow [2023-09-01 06:12:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:12:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:12:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 345 transitions. [2023-09-01 06:12:17,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2023-09-01 06:12:17,326 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 345 transitions. [2023-09-01 06:12:17,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 345 transitions. [2023-09-01 06:12:17,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:12:17,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 345 transitions. [2023-09-01 06:12:17,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:17,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:17,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:17,329 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 105 flow. Second operand 5 states and 345 transitions. [2023-09-01 06:12:17,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 19 transitions, 137 flow [2023-09-01 06:12:17,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 19 transitions, 126 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 06:12:17,331 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-09-01 06:12:17,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-09-01 06:12:17,332 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-09-01 06:12:17,332 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-09-01 06:12:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:12:17,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2023-09-01 06:12:17,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-09-01 06:12:17,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-09-01 06:12:17,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-09-01 06:12:17,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-09-01 06:12:17,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-09-01 06:12:17,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-09-01 06:12:17,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-09-01 06:12:17,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-09-01 06:12:17,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:12:17,337 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2023-09-01 06:12:17,342 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 06:12:17,342 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 06:12:17,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 06:12:17 BasicIcfg [2023-09-01 06:12:17,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 06:12:17,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 06:12:17,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 06:12:17,346 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 06:12:17,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:12:10" (3/4) ... [2023-09-01 06:12:17,349 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 06:12:17,353 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-09-01 06:12:17,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-09-01 06:12:17,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 06:12:17,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 06:12:17,385 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 06:12:17,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 06:12:17,385 INFO L158 Benchmark]: Toolchain (without parser) took 8681.73ms. Allocated memory was 73.4MB in the beginning and 130.0MB in the end (delta: 56.6MB). Free memory was 50.0MB in the beginning and 87.0MB in the end (delta: -37.0MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2023-09-01 06:12:17,385 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 06:12:17,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 717.95ms. Allocated memory is still 73.4MB. Free memory was 49.8MB in the beginning and 40.4MB in the end (delta: 9.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-09-01 06:12:17,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.25ms. Allocated memory is still 73.4MB. Free memory was 40.2MB in the beginning and 38.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:12:17,386 INFO L158 Benchmark]: Boogie Preprocessor took 34.28ms. Allocated memory is still 73.4MB. Free memory was 38.1MB in the beginning and 36.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:12:17,386 INFO L158 Benchmark]: RCFGBuilder took 513.42ms. Allocated memory is still 73.4MB. Free memory was 36.2MB in the beginning and 43.3MB in the end (delta: -7.1MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-09-01 06:12:17,387 INFO L158 Benchmark]: TraceAbstraction took 7300.07ms. Allocated memory was 73.4MB in the beginning and 130.0MB in the end (delta: 56.6MB). Free memory was 42.6MB in the beginning and 90.2MB in the end (delta: -47.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-09-01 06:12:17,387 INFO L158 Benchmark]: Witness Printer took 38.76ms. Allocated memory is still 130.0MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:12:17,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 717.95ms. Allocated memory is still 73.4MB. Free memory was 49.8MB in the beginning and 40.4MB in the end (delta: 9.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.25ms. Allocated memory is still 73.4MB. Free memory was 40.2MB in the beginning and 38.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.28ms. Allocated memory is still 73.4MB. Free memory was 38.1MB in the beginning and 36.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.42ms. Allocated memory is still 73.4MB. Free memory was 36.2MB in the beginning and 43.3MB in the end (delta: -7.1MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7300.07ms. Allocated memory was 73.4MB in the beginning and 130.0MB in the end (delta: 56.6MB). Free memory was 42.6MB in the beginning and 90.2MB in the end (delta: -47.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Witness Printer took 38.76ms. Allocated memory is still 130.0MB. Free memory was 89.1MB in the beginning and 87.0MB 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: 1.9s, 81 PlacesBefore, 21 PlacesAfterwards, 81 TransitionsBefore, 18 TransitionsAfterwards, 988 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 2 ConcurrentYvCompositions, 3 ChoiceCompositions, 80 TotalNumberOfCompositions, 1232 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 917, independent: 847, independent conditional: 0, independent unconditional: 847, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 550, independent: 528, independent conditional: 0, independent unconditional: 528, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 917, independent: 319, independent conditional: 0, independent unconditional: 319, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 550, unknown conditional: 0, unknown unconditional: 550] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: 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, 106 locations, 9 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: 7.2s, OverallIterations: 10, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 725 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 496 mSDsluCounter, 276 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1125 IncrementalHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 85 mSDtfsCounter, 1125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 152 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372 SizeOfPredicates, 2 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 286/330 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 06:12:17,419 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