./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:16:14,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:16:14,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:16:14,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:16:14,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:16:14,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:16:14,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:16:14,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:16:14,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:16:14,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:16:14,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:16:14,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:16:14,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:16:14,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:16:14,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:16:14,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:16:14,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:16:14,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:16:14,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:16:14,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:16:14,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:16:14,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:16:14,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:16:14,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:16:14,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:16:14,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:16:14,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:16:14,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:16:14,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:16:14,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:16:14,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:16:14,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:16:14,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:16:14,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:16:14,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:16:14,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:16:14,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:16:14,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:16:14,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:16:14,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:16:14,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:16:14,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:16:14,802 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:16:14,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:16:14,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:16:14,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:16:14,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:16:14,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:16:14,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:16:14,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:16:14,806 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:16:14,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:16:14,807 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:16:14,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:16:14,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:16:14,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:16:14,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:16:14,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:16:14,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:16:14,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:16:14,808 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:16:14,808 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:16:14,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:16:14,809 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:16:14,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:16:14,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:16:14,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:16:14,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:16:14,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:16:14,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:16:14,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:16:14,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:16:14,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:16:14,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:16:14,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:16:14,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:16:14,811 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:16:14,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:16:14,812 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:16:14,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:16:15,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:16:15,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:16:15,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:16:15,134 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:16:15,134 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:16:15,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-08-30 10:16:16,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:16:16,663 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:16:16,667 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-08-30 10:16:16,691 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3e89ca7/af619f21787f4578ba35669f0c2e4926/FLAG318721229 [2023-08-30 10:16:16,711 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3e89ca7/af619f21787f4578ba35669f0c2e4926 [2023-08-30 10:16:16,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:16:16,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:16:16,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:16:16,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:16:16,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:16:16,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:16:16" (1/1) ... [2023-08-30 10:16:16,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70311b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:16, skipping insertion in model container [2023-08-30 10:16:16,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:16:16" (1/1) ... [2023-08-30 10:16:16,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:16:16,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:16:17,218 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2023-08-30 10:16:17,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:16:17,288 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:16:17,380 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2023-08-30 10:16:17,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:16:17,469 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:16:17,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17 WrapperNode [2023-08-30 10:16:17,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:16:17,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:16:17,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:16:17,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:16:17,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,543 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 272 [2023-08-30 10:16:17,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:16:17,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:16:17,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:16:17,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:16:17,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,572 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:16:17,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:16:17,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:16:17,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:16:17,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (1/1) ... [2023-08-30 10:16:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:16:17,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:17,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:16:17,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:16:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:16:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:16:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:16:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:16:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:16:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:16:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:16:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:16:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:16:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:16:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:16:17,665 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:16:17,791 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:16:17,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:16:18,207 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:16:18,216 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:16:18,225 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-30 10:16:18,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:16:18 BoogieIcfgContainer [2023-08-30 10:16:18,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:16:18,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:16:18,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:16:18,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:16:18,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:16:16" (1/3) ... [2023-08-30 10:16:18,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1553510d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:16:18, skipping insertion in model container [2023-08-30 10:16:18,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:16:17" (2/3) ... [2023-08-30 10:16:18,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1553510d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:16:18, skipping insertion in model container [2023-08-30 10:16:18,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:16:18" (3/3) ... [2023-08-30 10:16:18,236 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2023-08-30 10:16:18,243 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:16:18,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:16:18,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 10:16:18,252 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:16:18,362 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:16:18,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 10:16:18,575 INFO L130 PetriNetUnfolder]: 73/440 cut-off events. [2023-08-30 10:16:18,576 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:16:18,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 440 events. 73/440 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2094 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:16:18,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 10:16:18,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 284 transitions, 576 flow [2023-08-30 10:16:18,601 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:16:18,614 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 284 transitions, 576 flow [2023-08-30 10:16:18,618 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 284 transitions, 576 flow [2023-08-30 10:16:18,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 284 transitions, 576 flow [2023-08-30 10:16:18,671 INFO L130 PetriNetUnfolder]: 72/437 cut-off events. [2023-08-30 10:16:18,671 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:16:18,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 437 events. 72/437 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2079 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:16:18,699 INFO L119 LiptonReduction]: Number of co-enabled transitions 26080 [2023-08-30 10:16:22,243 INFO L134 LiptonReduction]: Checked pairs total: 39972 [2023-08-30 10:16:22,244 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-08-30 10:16:22,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:16:22,262 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;@3d09ed66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:16:22,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 10:16:22,265 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 10:16:22,265 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:16:22,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:22,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:16:22,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:22,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:22,271 INFO L85 PathProgramCache]: Analyzing trace with hash 35433, now seen corresponding path program 1 times [2023-08-30 10:16:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:22,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75798219] [2023-08-30 10:16:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:22,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:22,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:22,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75798219] [2023-08-30 10:16:22,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75798219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:22,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:22,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:16:22,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849791384] [2023-08-30 10:16:22,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:22,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:22,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:22,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:16:22,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 119 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:22,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:22,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:16:22,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:22,918 INFO L130 PetriNetUnfolder]: 1055/2188 cut-off events. [2023-08-30 10:16:22,919 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:16:22,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2188 events. 1055/2188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14595 event pairs, 903 based on Foata normal form. 289/1785 useless extension candidates. Maximal degree in co-relation 4065. Up to 1986 conditions per place. [2023-08-30 10:16:22,932 INFO L137 encePairwiseOnDemand]: 495/531 looper letters, 73 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 10:16:22,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 334 flow [2023-08-30 10:16:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-30 10:16:22,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210295040803515 [2023-08-30 10:16:22,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-30 10:16:22,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-30 10:16:22,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:22,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-30 10:16:22,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:22,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:22,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:22,978 INFO L175 Difference]: Start difference. First operand has 85 places, 119 transitions, 246 flow. Second operand 3 states and 830 transitions. [2023-08-30 10:16:22,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 334 flow [2023-08-30 10:16:22,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:16:22,985 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 196 flow [2023-08-30 10:16:22,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 10:16:22,991 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 10:16:22,991 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 196 flow [2023-08-30 10:16:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:22,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:22,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:16:22,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:16:23,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:23,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:23,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1100841, now seen corresponding path program 1 times [2023-08-30 10:16:23,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:23,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687628156] [2023-08-30 10:16:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:23,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:23,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:23,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687628156] [2023-08-30 10:16:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687628156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:23,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:23,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237201223] [2023-08-30 10:16:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:23,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:16:23,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:23,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:23,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:16:23,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:23,312 INFO L130 PetriNetUnfolder]: 1055/2187 cut-off events. [2023-08-30 10:16:23,312 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:16:23,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4186 conditions, 2187 events. 1055/2187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14616 event pairs, 903 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 4174. Up to 1985 conditions per place. [2023-08-30 10:16:23,323 INFO L137 encePairwiseOnDemand]: 529/531 looper letters, 73 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-30 10:16:23,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 340 flow [2023-08-30 10:16:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 794 transitions. [2023-08-30 10:16:23,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49843063402385435 [2023-08-30 10:16:23,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 794 transitions. [2023-08-30 10:16:23,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 794 transitions. [2023-08-30 10:16:23,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:23,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 794 transitions. [2023-08-30 10:16:23,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:23,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:23,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:23,333 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 196 flow. Second operand 3 states and 794 transitions. [2023-08-30 10:16:23,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 340 flow [2023-08-30 10:16:23,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 336 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:23,336 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 190 flow [2023-08-30 10:16:23,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-08-30 10:16:23,337 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 10:16:23,337 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 190 flow [2023-08-30 10:16:23,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:23,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:23,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:16:23,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:16:23,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:23,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1563346380, now seen corresponding path program 1 times [2023-08-30 10:16:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:23,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435498501] [2023-08-30 10:16:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:23,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:23,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:23,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435498501] [2023-08-30 10:16:23,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435498501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:23,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325519893] [2023-08-30 10:16:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:23,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:23,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:23,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:23,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:16:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:23,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:16:23,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:23,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:23,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325519893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:23,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:23,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:16:23,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807070756] [2023-08-30 10:16:23,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:23,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:16:23,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:16:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:16:23,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 10:16:23,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:23,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:23,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 10:16:23,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:23,990 INFO L130 PetriNetUnfolder]: 1055/2190 cut-off events. [2023-08-30 10:16:23,991 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:16:23,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2190 events. 1055/2190 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14611 event pairs, 903 based on Foata normal form. 0/1499 useless extension candidates. Maximal degree in co-relation 4185. Up to 1985 conditions per place. [2023-08-30 10:16:24,003 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 72 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-08-30 10:16:24,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 356 flow [2023-08-30 10:16:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:16:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:16:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1514 transitions. [2023-08-30 10:16:24,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47520401757689895 [2023-08-30 10:16:24,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1514 transitions. [2023-08-30 10:16:24,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1514 transitions. [2023-08-30 10:16:24,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:24,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1514 transitions. [2023-08-30 10:16:24,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,018 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 190 flow. Second operand 6 states and 1514 transitions. [2023-08-30 10:16:24,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 356 flow [2023-08-30 10:16:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:24,021 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 225 flow [2023-08-30 10:16:24,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-08-30 10:16:24,022 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 10:16:24,023 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 225 flow [2023-08-30 10:16:24,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:24,024 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 10:16:24,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:16:24,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:24,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:24,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:24,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1271227380, now seen corresponding path program 2 times [2023-08-30 10:16:24,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:24,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135433710] [2023-08-30 10:16:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:24,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:16:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:24,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135433710] [2023-08-30 10:16:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135433710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:24,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:24,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:24,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129591140] [2023-08-30 10:16:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:24,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:24,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:16:24,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:24,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:16:24,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:24,586 INFO L130 PetriNetUnfolder]: 1010/2088 cut-off events. [2023-08-30 10:16:24,586 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:16:24,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 2088 events. 1010/2088 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14139 event pairs, 400 based on Foata normal form. 0/1479 useless extension candidates. Maximal degree in co-relation 3980. Up to 1836 conditions per place. [2023-08-30 10:16:24,596 INFO L137 encePairwiseOnDemand]: 526/531 looper letters, 96 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-30 10:16:24,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 463 flow [2023-08-30 10:16:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 817 transitions. [2023-08-30 10:16:24,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128688010043942 [2023-08-30 10:16:24,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 817 transitions. [2023-08-30 10:16:24,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 817 transitions. [2023-08-30 10:16:24,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:24,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 817 transitions. [2023-08-30 10:16:24,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,605 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 225 flow. Second operand 3 states and 817 transitions. [2023-08-30 10:16:24,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 463 flow [2023-08-30 10:16:24,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 449 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:24,609 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 215 flow [2023-08-30 10:16:24,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-08-30 10:16:24,610 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 10:16:24,610 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 215 flow [2023-08-30 10:16:24,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:24,611 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:24,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:16:24,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:24,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash -436868778, now seen corresponding path program 1 times [2023-08-30 10:16:24,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:24,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056708396] [2023-08-30 10:16:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:24,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:24,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:24,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056708396] [2023-08-30 10:16:24,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056708396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:24,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407608668] [2023-08-30 10:16:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:24,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:24,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:24,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:24,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:16:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:24,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:16:24,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:24,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407608668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:24,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:16:24,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516721045] [2023-08-30 10:16:24,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:24,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:16:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:16:24,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:16:24,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 10:16:24,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 215 flow. Second operand has 13 states, 13 states have (on average 240.53846153846155) internal successors, (3127), 13 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:24,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:24,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 10:16:24,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:25,266 INFO L130 PetriNetUnfolder]: 1010/2064 cut-off events. [2023-08-30 10:16:25,266 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 10:16:25,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 2064 events. 1010/2064 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13469 event pairs, 861 based on Foata normal form. 6/1475 useless extension candidates. Maximal degree in co-relation 4021. Up to 1857 conditions per place. [2023-08-30 10:16:25,277 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 70 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-08-30 10:16:25,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 413 flow [2023-08-30 10:16:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:16:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:16:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2955 transitions. [2023-08-30 10:16:25,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637476459510358 [2023-08-30 10:16:25,285 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2955 transitions. [2023-08-30 10:16:25,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2955 transitions. [2023-08-30 10:16:25,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:25,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2955 transitions. [2023-08-30 10:16:25,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 246.25) internal successors, (2955), 12 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:25,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:25,304 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:25,304 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 215 flow. Second operand 12 states and 2955 transitions. [2023-08-30 10:16:25,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 413 flow [2023-08-30 10:16:25,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:16:25,307 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 295 flow [2023-08-30 10:16:25,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=295, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2023-08-30 10:16:25,308 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2023-08-30 10:16:25,308 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 295 flow [2023-08-30 10:16:25,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.53846153846155) internal successors, (3127), 13 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:25,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:25,309 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:25,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:16:25,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:25,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:25,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1287089834, now seen corresponding path program 2 times [2023-08-30 10:16:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975192711] [2023-08-30 10:16:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975192711] [2023-08-30 10:16:25,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975192711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:25,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:16:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351001090] [2023-08-30 10:16:25,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:16:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:16:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:16:26,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 531 [2023-08-30 10:16:26,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 295 flow. Second operand has 7 states, 7 states have (on average 229.42857142857142) internal successors, (1606), 7 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:26,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:26,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 531 [2023-08-30 10:16:26,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:26,983 INFO L130 PetriNetUnfolder]: 1692/3495 cut-off events. [2023-08-30 10:16:26,983 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-30 10:16:26,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 3495 events. 1692/3495 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 24795 event pairs, 233 based on Foata normal form. 0/2472 useless extension candidates. Maximal degree in co-relation 6885. Up to 1897 conditions per place. [2023-08-30 10:16:27,004 INFO L137 encePairwiseOnDemand]: 516/531 looper letters, 214 selfloop transitions, 22 changer transitions 2/251 dead transitions. [2023-08-30 10:16:27,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 251 transitions, 1103 flow [2023-08-30 10:16:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:16:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:16:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1832 transitions. [2023-08-30 10:16:27,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928705945655098 [2023-08-30 10:16:27,012 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1832 transitions. [2023-08-30 10:16:27,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1832 transitions. [2023-08-30 10:16:27,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:27,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1832 transitions. [2023-08-30 10:16:27,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.7142857142857) internal successors, (1832), 7 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 531.0) internal successors, (4248), 8 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,024 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 531.0) internal successors, (4248), 8 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,024 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 295 flow. Second operand 7 states and 1832 transitions. [2023-08-30 10:16:27,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 251 transitions, 1103 flow [2023-08-30 10:16:27,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 251 transitions, 1055 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:16:27,032 INFO L231 Difference]: Finished difference. Result has 116 places, 114 transitions, 419 flow [2023-08-30 10:16:27,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=116, PETRI_TRANSITIONS=114} [2023-08-30 10:16:27,035 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 31 predicate places. [2023-08-30 10:16:27,035 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 114 transitions, 419 flow [2023-08-30 10:16:27,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 229.42857142857142) internal successors, (1606), 7 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:27,037 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:16:27,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:27,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 848727625, now seen corresponding path program 1 times [2023-08-30 10:16:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:27,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208566632] [2023-08-30 10:16:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:27,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:27,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208566632] [2023-08-30 10:16:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208566632] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676840974] [2023-08-30 10:16:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:27,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:27,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:27,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:27,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:16:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:27,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:16:27,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:27,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:27,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676840974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:27,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:27,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:16:27,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778954509] [2023-08-30 10:16:27,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:27,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:16:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:27,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:16:27,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:16:27,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 10:16:27,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 114 transitions, 419 flow. Second operand has 7 states, 7 states have (on average 241.71428571428572) internal successors, (1692), 7 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:27,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 10:16:27,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:27,344 INFO L130 PetriNetUnfolder]: 91/274 cut-off events. [2023-08-30 10:16:27,344 INFO L131 PetriNetUnfolder]: For 221/226 co-relation queries the response was YES. [2023-08-30 10:16:27,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 274 events. 91/274 cut-off events. For 221/226 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1014 event pairs, 15 based on Foata normal form. 42/279 useless extension candidates. Maximal degree in co-relation 756. Up to 182 conditions per place. [2023-08-30 10:16:27,346 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 69 selfloop transitions, 2 changer transitions 2/78 dead transitions. [2023-08-30 10:16:27,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 460 flow [2023-08-30 10:16:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:16:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:16:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1008 transitions. [2023-08-30 10:16:27,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745762711864407 [2023-08-30 10:16:27,350 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1008 transitions. [2023-08-30 10:16:27,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1008 transitions. [2023-08-30 10:16:27,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:27,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1008 transitions. [2023-08-30 10:16:27,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,356 INFO L175 Difference]: Start difference. First operand has 116 places, 114 transitions, 419 flow. Second operand 4 states and 1008 transitions. [2023-08-30 10:16:27,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 460 flow [2023-08-30 10:16:27,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 442 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 10:16:27,359 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 210 flow [2023-08-30 10:16:27,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-08-30 10:16:27,360 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -19 predicate places. [2023-08-30 10:16:27,360 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 210 flow [2023-08-30 10:16:27,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 241.71428571428572) internal successors, (1692), 7 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:27,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:27,361 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:27,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:16:27,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:27,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:27,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash 57353301, now seen corresponding path program 1 times [2023-08-30 10:16:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:27,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603392118] [2023-08-30 10:16:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:27,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:27,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603392118] [2023-08-30 10:16:27,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603392118] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:27,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904721015] [2023-08-30 10:16:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:27,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:27,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:27,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:27,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:16:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:28,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:16:28,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:28,071 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 [2023-08-30 10:16:28,153 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:16:28,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:16:28,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:16:28,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:16:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:28,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904721015] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:28,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-08-30 10:16:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876880476] [2023-08-30 10:16:28,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:28,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:16:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:16:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=164, Unknown=4, NotChecked=0, Total=210 [2023-08-30 10:16:28,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 531 [2023-08-30 10:16:28,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 210 flow. Second operand has 15 states, 15 states have (on average 183.4) internal successors, (2751), 15 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:28,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:28,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 531 [2023-08-30 10:16:28,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:29,049 INFO L130 PetriNetUnfolder]: 89/251 cut-off events. [2023-08-30 10:16:29,050 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2023-08-30 10:16:29,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 251 events. 89/251 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 756 event pairs, 12 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 696. Up to 115 conditions per place. [2023-08-30 10:16:29,051 INFO L137 encePairwiseOnDemand]: 523/531 looper letters, 60 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-08-30 10:16:29,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 406 flow [2023-08-30 10:16:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:16:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:16:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1143 transitions. [2023-08-30 10:16:29,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587570621468927 [2023-08-30 10:16:29,056 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1143 transitions. [2023-08-30 10:16:29,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1143 transitions. [2023-08-30 10:16:29,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:29,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1143 transitions. [2023-08-30 10:16:29,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,064 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,064 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 210 flow. Second operand 6 states and 1143 transitions. [2023-08-30 10:16:29,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 406 flow [2023-08-30 10:16:29,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:16:29,067 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 240 flow [2023-08-30 10:16:29,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-30 10:16:29,068 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -15 predicate places. [2023-08-30 10:16:29,068 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 240 flow [2023-08-30 10:16:29,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 183.4) internal successors, (2751), 15 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:29,070 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:29,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:16:29,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:29,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:29,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash 190474375, now seen corresponding path program 1 times [2023-08-30 10:16:29,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:29,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146970216] [2023-08-30 10:16:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:29,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146970216] [2023-08-30 10:16:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146970216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:29,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098664355] [2023-08-30 10:16:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:29,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:16:29,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:29,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:16:29,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:29,427 INFO L130 PetriNetUnfolder]: 119/352 cut-off events. [2023-08-30 10:16:29,427 INFO L131 PetriNetUnfolder]: For 316/316 co-relation queries the response was YES. [2023-08-30 10:16:29,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 352 events. 119/352 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1353 event pairs, 67 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 971. Up to 219 conditions per place. [2023-08-30 10:16:29,430 INFO L137 encePairwiseOnDemand]: 527/531 looper letters, 64 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 10:16:29,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 443 flow [2023-08-30 10:16:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-08-30 10:16:29,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-30 10:16:29,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-08-30 10:16:29,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-08-30 10:16:29,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:29,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-08-30 10:16:29,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,437 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 240 flow. Second operand 3 states and 767 transitions. [2023-08-30 10:16:29,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 443 flow [2023-08-30 10:16:29,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 430 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:16:29,441 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 243 flow [2023-08-30 10:16:29,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-30 10:16:29,442 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -15 predicate places. [2023-08-30 10:16:29,442 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 243 flow [2023-08-30 10:16:29,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:29,443 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:29,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:16:29,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:29,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash -752816891, now seen corresponding path program 1 times [2023-08-30 10:16:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986351724] [2023-08-30 10:16:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:29,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:29,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986351724] [2023-08-30 10:16:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986351724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:29,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:16:29,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267670583] [2023-08-30 10:16:29,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:29,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:16:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:16:29,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:16:30,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 531 [2023-08-30 10:16:30,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 243 flow. Second operand has 9 states, 9 states have (on average 225.44444444444446) internal successors, (2029), 9 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:30,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 531 [2023-08-30 10:16:30,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:30,584 INFO L130 PetriNetUnfolder]: 122/387 cut-off events. [2023-08-30 10:16:30,584 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2023-08-30 10:16:30,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 387 events. 122/387 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1627 event pairs, 2 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 1075. Up to 152 conditions per place. [2023-08-30 10:16:30,587 INFO L137 encePairwiseOnDemand]: 520/531 looper letters, 66 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2023-08-30 10:16:30,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 516 flow [2023-08-30 10:16:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:16:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:16:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1858 transitions. [2023-08-30 10:16:30,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4373822975517891 [2023-08-30 10:16:30,593 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1858 transitions. [2023-08-30 10:16:30,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1858 transitions. [2023-08-30 10:16:30,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:30,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1858 transitions. [2023-08-30 10:16:30,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 232.25) internal successors, (1858), 8 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 531.0) internal successors, (4779), 9 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,606 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 531.0) internal successors, (4779), 9 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,606 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 243 flow. Second operand 8 states and 1858 transitions. [2023-08-30 10:16:30,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 516 flow [2023-08-30 10:16:30,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:30,609 INFO L231 Difference]: Finished difference. Result has 80 places, 58 transitions, 325 flow [2023-08-30 10:16:30,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2023-08-30 10:16:30,610 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -5 predicate places. [2023-08-30 10:16:30,610 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 325 flow [2023-08-30 10:16:30,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 225.44444444444446) internal successors, (2029), 9 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:30,611 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:30,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:16:30,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:30,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:30,612 INFO L85 PathProgramCache]: Analyzing trace with hash -752816841, now seen corresponding path program 1 times [2023-08-30 10:16:30,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:30,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962159835] [2023-08-30 10:16:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:30,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:30,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962159835] [2023-08-30 10:16:30,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962159835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:30,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:30,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:16:30,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724530397] [2023-08-30 10:16:30,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:30,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:16:30,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:16:30,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:16:30,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 531 [2023-08-30 10:16:30,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:30,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 531 [2023-08-30 10:16:30,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:30,925 INFO L130 PetriNetUnfolder]: 118/411 cut-off events. [2023-08-30 10:16:30,925 INFO L131 PetriNetUnfolder]: For 658/666 co-relation queries the response was YES. [2023-08-30 10:16:30,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 411 events. 118/411 cut-off events. For 658/666 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1853 event pairs, 25 based on Foata normal form. 14/392 useless extension candidates. Maximal degree in co-relation 1282. Up to 154 conditions per place. [2023-08-30 10:16:30,929 INFO L137 encePairwiseOnDemand]: 521/531 looper letters, 51 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2023-08-30 10:16:30,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 565 flow [2023-08-30 10:16:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:16:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:16:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1194 transitions. [2023-08-30 10:16:30,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497175141242938 [2023-08-30 10:16:30,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1194 transitions. [2023-08-30 10:16:30,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1194 transitions. [2023-08-30 10:16:30,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:30,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1194 transitions. [2023-08-30 10:16:30,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 531.0) internal successors, (3186), 6 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 531.0) internal successors, (3186), 6 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,941 INFO L175 Difference]: Start difference. First operand has 80 places, 58 transitions, 325 flow. Second operand 5 states and 1194 transitions. [2023-08-30 10:16:30,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 565 flow [2023-08-30 10:16:30,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 526 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 10:16:30,946 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 443 flow [2023-08-30 10:16:30,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2023-08-30 10:16:30,946 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2023-08-30 10:16:30,946 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 443 flow [2023-08-30 10:16:30,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:30,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:30,947 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:30,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:16:30,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:30,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:30,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1940629688, now seen corresponding path program 1 times [2023-08-30 10:16:30,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:30,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398428545] [2023-08-30 10:16:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:30,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398428545] [2023-08-30 10:16:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398428545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494561478] [2023-08-30 10:16:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:31,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:31,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:31,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:31,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:16:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:31,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:16:31,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:31,441 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 [2023-08-30 10:16:31,509 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:16:31,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:16:31,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:16:31,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-30 10:16:31,682 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 16 treesize of output 18 [2023-08-30 10:16:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:31,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:31,759 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 Int)) (or (< v_ArrVal_402 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_#t~post35#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))) is different from false [2023-08-30 10:16:31,774 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_402 Int)) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_402 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:16:31,811 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_402 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< v_ArrVal_402 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:16:31,854 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_400 (Array Int Int)) (v_ArrVal_402 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_400))) (let ((.cse1 (select .cse0 |c_~#cache~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#cache~0.base| (store .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_402 (+ (select .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)))))) is different from false [2023-08-30 10:16:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:16:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494561478] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:32,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 20 [2023-08-30 10:16:32,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346101355] [2023-08-30 10:16:32,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:32,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:16:32,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:16:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=247, Unknown=5, NotChecked=140, Total=462 [2023-08-30 10:16:32,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 531 [2023-08-30 10:16:32,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 443 flow. Second operand has 22 states, 22 states have (on average 177.1818181818182) internal successors, (3898), 22 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:32,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:32,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 531 [2023-08-30 10:16:32,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:32,711 INFO L130 PetriNetUnfolder]: 129/432 cut-off events. [2023-08-30 10:16:32,712 INFO L131 PetriNetUnfolder]: For 950/950 co-relation queries the response was YES. [2023-08-30 10:16:32,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1565 conditions, 432 events. 129/432 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1928 event pairs, 26 based on Foata normal form. 4/399 useless extension candidates. Maximal degree in co-relation 1532. Up to 143 conditions per place. [2023-08-30 10:16:32,716 INFO L137 encePairwiseOnDemand]: 520/531 looper letters, 78 selfloop transitions, 19 changer transitions 0/100 dead transitions. [2023-08-30 10:16:32,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 100 transitions, 768 flow [2023-08-30 10:16:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:16:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:16:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1822 transitions. [2023-08-30 10:16:32,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3431261770244821 [2023-08-30 10:16:32,722 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1822 transitions. [2023-08-30 10:16:32,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1822 transitions. [2023-08-30 10:16:32,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:32,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1822 transitions. [2023-08-30 10:16:32,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 182.2) internal successors, (1822), 10 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:32,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 531.0) internal successors, (5841), 11 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:32,734 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 531.0) internal successors, (5841), 11 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:32,734 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 443 flow. Second operand 10 states and 1822 transitions. [2023-08-30 10:16:32,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 100 transitions, 768 flow [2023-08-30 10:16:32,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 748 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-30 10:16:32,741 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 528 flow [2023-08-30 10:16:32,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=528, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2023-08-30 10:16:32,742 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2023-08-30 10:16:32,743 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 528 flow [2023-08-30 10:16:32,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 177.1818181818182) internal successors, (3898), 22 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:32,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:32,744 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:32,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 10:16:32,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 10:16:32,950 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:32,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1940629638, now seen corresponding path program 1 times [2023-08-30 10:16:32,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032110462] [2023-08-30 10:16:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032110462] [2023-08-30 10:16:33,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032110462] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086061021] [2023-08-30 10:16:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:33,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:33,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:33,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:33,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:16:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:33,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:16:33,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:33,589 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:16:33,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:16:33,661 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 11 treesize of output 7 [2023-08-30 10:16:33,696 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 14 treesize of output 16 [2023-08-30 10:16:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:33,733 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_480 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_480) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483649)) is different from false [2023-08-30 10:16:33,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:16:33,745 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-30 10:16:33,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-08-30 10:16:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:16:33,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086061021] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:33,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:33,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-08-30 10:16:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690438194] [2023-08-30 10:16:33,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:16:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:16:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=363, Unknown=1, NotChecked=38, Total=462 [2023-08-30 10:16:33,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 531 [2023-08-30 10:16:33,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 528 flow. Second operand has 22 states, 22 states have (on average 185.04545454545453) internal successors, (4071), 22 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:33,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:33,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 531 [2023-08-30 10:16:33,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:34,762 INFO L130 PetriNetUnfolder]: 140/494 cut-off events. [2023-08-30 10:16:34,762 INFO L131 PetriNetUnfolder]: For 1423/1429 co-relation queries the response was YES. [2023-08-30 10:16:34,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 494 events. 140/494 cut-off events. For 1423/1429 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2401 event pairs, 32 based on Foata normal form. 4/460 useless extension candidates. Maximal degree in co-relation 1845. Up to 166 conditions per place. [2023-08-30 10:16:34,766 INFO L137 encePairwiseOnDemand]: 518/531 looper letters, 90 selfloop transitions, 37 changer transitions 0/131 dead transitions. [2023-08-30 10:16:34,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 131 transitions, 1166 flow [2023-08-30 10:16:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:16:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:16:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3382 transitions. [2023-08-30 10:16:34,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35383971542163634 [2023-08-30 10:16:34,775 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3382 transitions. [2023-08-30 10:16:34,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3382 transitions. [2023-08-30 10:16:34,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:34,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3382 transitions. [2023-08-30 10:16:34,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 187.88888888888889) internal successors, (3382), 18 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:34,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 531.0) internal successors, (10089), 19 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:34,795 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 531.0) internal successors, (10089), 19 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:34,795 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 528 flow. Second operand 18 states and 3382 transitions. [2023-08-30 10:16:34,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 131 transitions, 1166 flow [2023-08-30 10:16:34,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 131 transitions, 1114 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 10:16:34,803 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 785 flow [2023-08-30 10:16:34,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=785, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2023-08-30 10:16:34,804 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 28 predicate places. [2023-08-30 10:16:34,804 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 785 flow [2023-08-30 10:16:34,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 185.04545454545453) internal successors, (4071), 22 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:34,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:34,806 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:34,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:16:35,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:35,018 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:35,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1862473429, now seen corresponding path program 1 times [2023-08-30 10:16:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:35,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388880885] [2023-08-30 10:16:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:35,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:35,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:35,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388880885] [2023-08-30 10:16:35,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388880885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:35,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:35,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:35,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875734252] [2023-08-30 10:16:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:35,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:35,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:35,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:35,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:16:35,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 91 transitions, 785 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:35,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:16:35,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:35,186 INFO L130 PetriNetUnfolder]: 127/467 cut-off events. [2023-08-30 10:16:35,186 INFO L131 PetriNetUnfolder]: For 1677/1699 co-relation queries the response was YES. [2023-08-30 10:16:35,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 467 events. 127/467 cut-off events. For 1677/1699 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2271 event pairs, 28 based on Foata normal form. 6/446 useless extension candidates. Maximal degree in co-relation 1935. Up to 364 conditions per place. [2023-08-30 10:16:35,190 INFO L137 encePairwiseOnDemand]: 529/531 looper letters, 85 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-30 10:16:35,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 92 transitions, 972 flow [2023-08-30 10:16:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 748 transitions. [2023-08-30 10:16:35,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46955430006277465 [2023-08-30 10:16:35,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 748 transitions. [2023-08-30 10:16:35,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 748 transitions. [2023-08-30 10:16:35,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:35,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 748 transitions. [2023-08-30 10:16:35,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,197 INFO L175 Difference]: Start difference. First operand has 113 places, 91 transitions, 785 flow. Second operand 3 states and 748 transitions. [2023-08-30 10:16:35,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 92 transitions, 972 flow [2023-08-30 10:16:35,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 92 transitions, 929 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 10:16:35,207 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 742 flow [2023-08-30 10:16:35,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2023-08-30 10:16:35,208 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 23 predicate places. [2023-08-30 10:16:35,208 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 742 flow [2023-08-30 10:16:35,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:35,208 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:35,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:16:35,208 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:35,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1862473590, now seen corresponding path program 1 times [2023-08-30 10:16:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222456269] [2023-08-30 10:16:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:16:35,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222456269] [2023-08-30 10:16:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222456269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:35,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:35,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055137075] [2023-08-30 10:16:35,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:35,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:35,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:35,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:35,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 10:16:35,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 742 flow. Second operand has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:35,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 10:16:35,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:35,351 INFO L130 PetriNetUnfolder]: 121/449 cut-off events. [2023-08-30 10:16:35,351 INFO L131 PetriNetUnfolder]: For 1492/1514 co-relation queries the response was YES. [2023-08-30 10:16:35,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 449 events. 121/449 cut-off events. For 1492/1514 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2146 event pairs, 23 based on Foata normal form. 6/439 useless extension candidates. Maximal degree in co-relation 1830. Up to 318 conditions per place. [2023-08-30 10:16:35,355 INFO L137 encePairwiseOnDemand]: 527/531 looper letters, 79 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2023-08-30 10:16:35,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 96 transitions, 986 flow [2023-08-30 10:16:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2023-08-30 10:16:35,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46767106089139987 [2023-08-30 10:16:35,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2023-08-30 10:16:35,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2023-08-30 10:16:35,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:35,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2023-08-30 10:16:35,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,361 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 742 flow. Second operand 3 states and 745 transitions. [2023-08-30 10:16:35,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 96 transitions, 986 flow [2023-08-30 10:16:35,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 96 transitions, 984 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:35,370 INFO L231 Difference]: Finished difference. Result has 108 places, 89 transitions, 760 flow [2023-08-30 10:16:35,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=108, PETRI_TRANSITIONS=89} [2023-08-30 10:16:35,371 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 23 predicate places. [2023-08-30 10:16:35,371 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 89 transitions, 760 flow [2023-08-30 10:16:35,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:35,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:35,372 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:35,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:16:35,372 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:35,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash -965655548, now seen corresponding path program 1 times [2023-08-30 10:16:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:35,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531493258] [2023-08-30 10:16:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:36,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531493258] [2023-08-30 10:16:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531493258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003608402] [2023-08-30 10:16:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:36,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:36,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:36,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:36,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 10:16:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-30 10:16:36,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:36,583 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 [2023-08-30 10:16:36,651 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:16:36,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:16:36,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:16:36,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-08-30 10:16:36,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:16:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:16:36,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:37,147 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_654 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_654) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483647)) is different from false [2023-08-30 10:16:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:16:37,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003608402] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:37,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:37,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 27 [2023-08-30 10:16:37,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987323673] [2023-08-30 10:16:37,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:37,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 10:16:37,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:37,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 10:16:37,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=606, Unknown=1, NotChecked=52, Total=812 [2023-08-30 10:16:37,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 531 [2023-08-30 10:16:37,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 89 transitions, 760 flow. Second operand has 29 states, 29 states have (on average 183.06896551724137) internal successors, (5309), 29 states have internal predecessors, (5309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:37,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:37,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 531 [2023-08-30 10:16:37,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:38,555 INFO L130 PetriNetUnfolder]: 126/471 cut-off events. [2023-08-30 10:16:38,555 INFO L131 PetriNetUnfolder]: For 1591/1597 co-relation queries the response was YES. [2023-08-30 10:16:38,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 471 events. 126/471 cut-off events. For 1591/1597 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2317 event pairs, 18 based on Foata normal form. 9/465 useless extension candidates. Maximal degree in co-relation 1948. Up to 111 conditions per place. [2023-08-30 10:16:38,559 INFO L137 encePairwiseOnDemand]: 516/531 looper letters, 76 selfloop transitions, 41 changer transitions 15/136 dead transitions. [2023-08-30 10:16:38,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 136 transitions, 1325 flow [2023-08-30 10:16:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:16:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:16:38,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2984 transitions. [2023-08-30 10:16:38,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3512241054613936 [2023-08-30 10:16:38,569 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2984 transitions. [2023-08-30 10:16:38,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2984 transitions. [2023-08-30 10:16:38,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:38,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2984 transitions. [2023-08-30 10:16:38,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 186.5) internal successors, (2984), 16 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:38,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 531.0) internal successors, (9027), 17 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:38,587 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 531.0) internal successors, (9027), 17 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:38,587 INFO L175 Difference]: Start difference. First operand has 108 places, 89 transitions, 760 flow. Second operand 16 states and 2984 transitions. [2023-08-30 10:16:38,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 136 transitions, 1325 flow [2023-08-30 10:16:38,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 136 transitions, 1297 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:38,599 INFO L231 Difference]: Finished difference. Result has 129 places, 88 transitions, 865 flow [2023-08-30 10:16:38,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=865, PETRI_PLACES=129, PETRI_TRANSITIONS=88} [2023-08-30 10:16:38,600 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 44 predicate places. [2023-08-30 10:16:38,600 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 88 transitions, 865 flow [2023-08-30 10:16:38,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 183.06896551724137) internal successors, (5309), 29 states have internal predecessors, (5309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:38,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:38,601 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:38,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 10:16:38,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:38,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:16:38,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1815185565, now seen corresponding path program 1 times [2023-08-30 10:16:38,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:38,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347148674] [2023-08-30 10:16:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:38,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:39,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347148674] [2023-08-30 10:16:39,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347148674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055056252] [2023-08-30 10:16:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:39,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:39,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:39,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:39,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:16:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:39,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-30 10:16:39,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:39,374 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 [2023-08-30 10:16:39,420 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:16:39,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:16:39,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:16:39,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-08-30 10:16:39,550 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 21 treesize of output 23 [2023-08-30 10:16:39,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:16:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:16:39,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:39,737 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_757 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82| Int)) (< (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_757))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82|) 2147483647)) is different from false [2023-08-30 10:16:39,749 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_757 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82| Int)) (< (select (select (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ |c_t_funThread1of1ForFork0_cache_entry_addref_#t~post35#1| 1))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_757))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82|) 2147483647)) is different from false [2023-08-30 10:16:42,306 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_757 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82| Int) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< (select (select (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse2 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (select .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_757))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82|) 2147483647)) is different from false [2023-08-30 10:16:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 5 not checked. [2023-08-30 10:16:43,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055056252] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:43,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:43,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 26 [2023-08-30 10:16:43,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926359701] [2023-08-30 10:16:43,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 10:16:43,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 10:16:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=468, Unknown=9, NotChecked=144, Total=756 [2023-08-30 10:16:43,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 531 [2023-08-30 10:16:43,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 88 transitions, 865 flow. Second operand has 28 states, 28 states have (on average 188.28571428571428) internal successors, (5272), 28 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:43,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:43,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 531 [2023-08-30 10:16:43,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:55,160 INFO L130 PetriNetUnfolder]: 98/384 cut-off events. [2023-08-30 10:16:55,160 INFO L131 PetriNetUnfolder]: For 1779/1783 co-relation queries the response was YES. [2023-08-30 10:16:55,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 384 events. 98/384 cut-off events. For 1779/1783 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1747 event pairs, 8 based on Foata normal form. 8/378 useless extension candidates. Maximal degree in co-relation 1760. Up to 95 conditions per place. [2023-08-30 10:16:55,163 INFO L137 encePairwiseOnDemand]: 518/531 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2023-08-30 10:16:55,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 99 transitions, 1087 flow [2023-08-30 10:16:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:16:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:16:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2284 transitions. [2023-08-30 10:16:55,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35844318895166355 [2023-08-30 10:16:55,168 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2284 transitions. [2023-08-30 10:16:55,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2284 transitions. [2023-08-30 10:16:55,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:55,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2284 transitions. [2023-08-30 10:16:55,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.33333333333334) internal successors, (2284), 12 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,182 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,182 INFO L175 Difference]: Start difference. First operand has 129 places, 88 transitions, 865 flow. Second operand 12 states and 2284 transitions. [2023-08-30 10:16:55,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 99 transitions, 1087 flow [2023-08-30 10:16:55,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 99 transitions, 946 flow, removed 21 selfloop flow, removed 18 redundant places. [2023-08-30 10:16:55,192 INFO L231 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2023-08-30 10:16:55,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2023-08-30 10:16:55,193 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 33 predicate places. [2023-08-30 10:16:55,193 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2023-08-30 10:16:55,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 188.28571428571428) internal successors, (5272), 28 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-08-30 10:16:55,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-08-30 10:16:55,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-08-30 10:16:55,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-08-30 10:16:55,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-08-30 10:16:55,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-08-30 10:16:55,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-08-30 10:16:55,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-08-30 10:16:55,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-08-30 10:16:55,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-08-30 10:16:55,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-08-30 10:16:55,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-08-30 10:16:55,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-08-30 10:16:55,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-08-30 10:16:55,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2023-08-30 10:16:55,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2023-08-30 10:16:55,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-08-30 10:16:55,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-08-30 10:16:55,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-08-30 10:16:55,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-08-30 10:16:55,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-08-30 10:16:55,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-08-30 10:16:55,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-08-30 10:16:55,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-08-30 10:16:55,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-08-30 10:16:55,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-08-30 10:16:55,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-08-30 10:16:55,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-08-30 10:16:55,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:16:55,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:16:55,408 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:55,410 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:16:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 10:16:55,445 INFO L130 PetriNetUnfolder]: 73/440 cut-off events. [2023-08-30 10:16:55,445 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:16:55,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 440 events. 73/440 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2094 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:16:55,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 10:16:55,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 276 transitions, 557 flow [2023-08-30 10:16:55,450 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:16:55,450 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 276 transitions, 557 flow [2023-08-30 10:16:55,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 276 transitions, 557 flow [2023-08-30 10:16:55,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 276 transitions, 557 flow [2023-08-30 10:16:55,479 INFO L130 PetriNetUnfolder]: 72/429 cut-off events. [2023-08-30 10:16:55,480 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:16:55,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 429 events. 72/429 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2007 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:16:55,492 INFO L119 LiptonReduction]: Number of co-enabled transitions 26080 [2023-08-30 10:17:30,417 INFO L134 LiptonReduction]: Checked pairs total: 44522 [2023-08-30 10:17:30,417 INFO L136 LiptonReduction]: Total number of compositions: 235 [2023-08-30 10:17:30,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:17:30,419 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;@3d09ed66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:17:30,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:17:30,424 INFO L130 PetriNetUnfolder]: 15/57 cut-off events. [2023-08-30 10:17:30,424 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:30,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:30,424 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 10:17:30,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:30,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:30,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1967240035, now seen corresponding path program 1 times [2023-08-30 10:17:30,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:30,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010018582] [2023-08-30 10:17:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:30,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:30,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:30,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010018582] [2023-08-30 10:17:30,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010018582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:30,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:30,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:30,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454730799] [2023-08-30 10:17:30,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:30,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:30,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:30,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:30,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:30,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 522 [2023-08-30 10:17:30,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 114 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:30,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:30,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 522 [2023-08-30 10:17:30,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:31,908 INFO L130 PetriNetUnfolder]: 1055/2184 cut-off events. [2023-08-30 10:17:31,909 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:31,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 2184 events. 1055/2184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14598 event pairs, 903 based on Foata normal form. 289/1783 useless extension candidates. Maximal degree in co-relation 4065. Up to 1982 conditions per place. [2023-08-30 10:17:31,913 INFO L137 encePairwiseOnDemand]: 488/522 looper letters, 30 selfloop transitions, 2 changer transitions 47/84 dead transitions. [2023-08-30 10:17:31,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 315 flow [2023-08-30 10:17:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2023-08-30 10:17:31,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255427841634738 [2023-08-30 10:17:31,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2023-08-30 10:17:31,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2023-08-30 10:17:31,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:31,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2023-08-30 10:17:31,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:31,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:31,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:31,920 INFO L175 Difference]: Start difference. First operand has 80 places, 114 transitions, 233 flow. Second operand 3 states and 823 transitions. [2023-08-30 10:17:31,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 315 flow [2023-08-30 10:17:31,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:17:31,921 INFO L231 Difference]: Finished difference. Result has 83 places, 37 transitions, 89 flow [2023-08-30 10:17:31,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=83, PETRI_TRANSITIONS=37} [2023-08-30 10:17:31,922 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 3 predicate places. [2023-08-30 10:17:31,922 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 37 transitions, 89 flow [2023-08-30 10:17:31,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:31,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:31,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:31,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:17:31,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:31,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:31,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2030773322, now seen corresponding path program 1 times [2023-08-30 10:17:31,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:31,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505916339] [2023-08-30 10:17:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505916339] [2023-08-30 10:17:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505916339] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538577442] [2023-08-30 10:17:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:32,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:32,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:32,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:17:32,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:17:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:32,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:17:32,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538577442] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:32,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:17:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682163162] [2023-08-30 10:17:32,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:32,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:17:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:32,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:17:32,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:17:32,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 522 [2023-08-30 10:17:32,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 37 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:32,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 522 [2023-08-30 10:17:32,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:33,198 INFO L130 PetriNetUnfolder]: 118/277 cut-off events. [2023-08-30 10:17:33,198 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:33,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 277 events. 118/277 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1055 event pairs, 105 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 533. Up to 249 conditions per place. [2023-08-30 10:17:33,199 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 30 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-30 10:17:33,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 171 flow [2023-08-30 10:17:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:17:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:17:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1472 transitions. [2023-08-30 10:17:33,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46998722860791825 [2023-08-30 10:17:33,201 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1472 transitions. [2023-08-30 10:17:33,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1472 transitions. [2023-08-30 10:17:33,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:33,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1472 transitions. [2023-08-30 10:17:33,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.33333333333334) internal successors, (1472), 6 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,206 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,206 INFO L175 Difference]: Start difference. First operand has 83 places, 37 transitions, 89 flow. Second operand 6 states and 1472 transitions. [2023-08-30 10:17:33,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 171 flow [2023-08-30 10:17:33,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 167 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:33,208 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 121 flow [2023-08-30 10:17:33,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-30 10:17:33,208 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -34 predicate places. [2023-08-30 10:17:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 121 flow [2023-08-30 10:17:33,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:33,209 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 10:17:33,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:17:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:33,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:33,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash -588074973, now seen corresponding path program 2 times [2023-08-30 10:17:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685652043] [2023-08-30 10:17:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:33,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:33,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:33,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685652043] [2023-08-30 10:17:33,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685652043] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:33,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426183996] [2023-08-30 10:17:33,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:17:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:33,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:33,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:17:33,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:17:33,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:17:33,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:17:33,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:17:33,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:34,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:34,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426183996] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:34,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:34,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:17:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383810254] [2023-08-30 10:17:34,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:34,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:17:34,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:17:34,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:17:34,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 522 [2023-08-30 10:17:34,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 121 flow. Second operand has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:34,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:34,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 522 [2023-08-30 10:17:34,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:35,896 INFO L130 PetriNetUnfolder]: 118/283 cut-off events. [2023-08-30 10:17:35,896 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 10:17:35,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 283 events. 118/283 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1055 event pairs, 105 based on Foata normal form. 6/180 useless extension candidates. Maximal degree in co-relation 524. Up to 249 conditions per place. [2023-08-30 10:17:35,897 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 30 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2023-08-30 10:17:35,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 239 flow [2023-08-30 10:17:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:17:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:17:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2915 transitions. [2023-08-30 10:17:35,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46535759897828866 [2023-08-30 10:17:35,900 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2915 transitions. [2023-08-30 10:17:35,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2915 transitions. [2023-08-30 10:17:35,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:35,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2915 transitions. [2023-08-30 10:17:35,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 242.91666666666666) internal successors, (2915), 12 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:35,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 522.0) internal successors, (6786), 13 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:35,909 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 522.0) internal successors, (6786), 13 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:35,909 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 121 flow. Second operand 12 states and 2915 transitions. [2023-08-30 10:17:35,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 239 flow [2023-08-30 10:17:35,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 225 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:35,910 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 191 flow [2023-08-30 10:17:35,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-30 10:17:35,911 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -18 predicate places. [2023-08-30 10:17:35,911 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 191 flow [2023-08-30 10:17:35,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:35,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:35,912 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 10:17:35,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:17:36,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:36,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:36,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:36,118 INFO L85 PathProgramCache]: Analyzing trace with hash 498857795, now seen corresponding path program 3 times [2023-08-30 10:17:36,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:36,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650101629] [2023-08-30 10:17:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:17:36,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:17:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:17:36,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:17:36,162 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:17:36,163 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:17:36,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 10:17:36,163 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-30 10:17:36,164 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:17:36,164 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:17:36,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:17:36,200 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:17:36,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:36,262 INFO L130 PetriNetUnfolder]: 118/711 cut-off events. [2023-08-30 10:17:36,263 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:17:36,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 711 events. 118/711 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3792 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2023-08-30 10:17:36,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:36,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:36,277 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:17:36,279 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:36,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:36,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:36,338 INFO L130 PetriNetUnfolder]: 118/711 cut-off events. [2023-08-30 10:17:36,338 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:17:36,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 711 events. 118/711 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3792 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2023-08-30 10:17:36,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 68000 [2023-08-30 10:18:21,961 INFO L134 LiptonReduction]: Checked pairs total: 119621 [2023-08-30 10:18:21,961 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-30 10:18:21,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:18:21,963 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;@3d09ed66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:18:21,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-08-30 10:18:21,964 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 10:18:21,964 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:18:21,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:21,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:18:21,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:21,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:21,966 INFO L85 PathProgramCache]: Analyzing trace with hash 67010, now seen corresponding path program 1 times [2023-08-30 10:18:21,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:21,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416055742] [2023-08-30 10:18:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:21,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:18:22,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:22,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416055742] [2023-08-30 10:18:22,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416055742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:22,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:22,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:18:22,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033281228] [2023-08-30 10:18:22,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:22,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:22,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:22,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:22,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:22,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:18:22,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 160 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:22,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:22,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:18:22,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:27,825 INFO L130 PetriNetUnfolder]: 52323/79072 cut-off events. [2023-08-30 10:18:27,825 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 10:18:27,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154709 conditions, 79072 events. 52323/79072 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2613. Compared 612009 event pairs, 47170 based on Foata normal form. 9339/61849 useless extension candidates. Maximal degree in co-relation 72853. Up to 75496 conditions per place. [2023-08-30 10:18:28,273 INFO L137 encePairwiseOnDemand]: 624/670 looper letters, 101 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-08-30 10:18:28,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 462 flow [2023-08-30 10:18:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2023-08-30 10:18:28,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318407960199005 [2023-08-30 10:18:28,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2023-08-30 10:18:28,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2023-08-30 10:18:28,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:28,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2023-08-30 10:18:28,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,279 INFO L175 Difference]: Start difference. First operand has 114 places, 160 transitions, 338 flow. Second operand 3 states and 1069 transitions. [2023-08-30 10:18:28,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 462 flow [2023-08-30 10:18:28,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:18:28,282 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 268 flow [2023-08-30 10:18:28,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-30 10:18:28,283 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-08-30 10:18:28,283 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 268 flow [2023-08-30 10:18:28,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:28,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:18:28,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:18:28,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:28,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2080863, now seen corresponding path program 1 times [2023-08-30 10:18:28,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:28,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518707383] [2023-08-30 10:18:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:18:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518707383] [2023-08-30 10:18:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518707383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:28,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:18:28,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076881232] [2023-08-30 10:18:28,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:28,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:18:28,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:28,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:18:28,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:33,007 INFO L130 PetriNetUnfolder]: 52323/79071 cut-off events. [2023-08-30 10:18:33,007 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 10:18:33,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154714 conditions, 79071 events. 52323/79071 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2613. Compared 612378 event pairs, 47170 based on Foata normal form. 0/52510 useless extension candidates. Maximal degree in co-relation 154701. Up to 75495 conditions per place. [2023-08-30 10:18:33,425 INFO L137 encePairwiseOnDemand]: 668/670 looper letters, 101 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2023-08-30 10:18:33,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 468 flow [2023-08-30 10:18:33,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-08-30 10:18:33,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508955223880597 [2023-08-30 10:18:33,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-08-30 10:18:33,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-08-30 10:18:33,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:33,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-08-30 10:18:33,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:33,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:33,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:33,434 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 268 flow. Second operand 3 states and 1023 transitions. [2023-08-30 10:18:33,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 468 flow [2023-08-30 10:18:33,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 464 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:18:33,436 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 262 flow [2023-08-30 10:18:33,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-08-30 10:18:33,437 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-08-30 10:18:33,437 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 262 flow [2023-08-30 10:18:33,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:33,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:33,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:33,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:18:33,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:33,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:33,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1937904375, now seen corresponding path program 1 times [2023-08-30 10:18:33,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:33,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191646665] [2023-08-30 10:18:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:33,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:18:33,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:33,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191646665] [2023-08-30 10:18:33,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191646665] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:18:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626905798] [2023-08-30 10:18:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:33,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:33,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:18:33,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:18:33,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:18:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:33,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:18:33,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:18:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:18:33,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:18:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:18:33,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626905798] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:18:33,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:18:33,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:18:33,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252864058] [2023-08-30 10:18:33,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:18:33,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:18:33,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:18:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:18:34,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:18:34,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 307.57142857142856) internal successors, (2153), 7 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:34,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:34,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:18:34,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:40,610 INFO L130 PetriNetUnfolder]: 52323/79074 cut-off events. [2023-08-30 10:18:40,611 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 10:18:40,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154722 conditions, 79074 events. 52323/79074 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2614. Compared 612276 event pairs, 47170 based on Foata normal form. 0/52513 useless extension candidates. Maximal degree in co-relation 154712. Up to 75495 conditions per place. [2023-08-30 10:18:40,974 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 100 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 10:18:40,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 484 flow [2023-08-30 10:18:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:18:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:18:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1944 transitions. [2023-08-30 10:18:40,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835820895522388 [2023-08-30 10:18:40,976 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1944 transitions. [2023-08-30 10:18:40,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1944 transitions. [2023-08-30 10:18:40,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:40,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1944 transitions. [2023-08-30 10:18:40,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:40,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:40,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:40,981 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 262 flow. Second operand 6 states and 1944 transitions. [2023-08-30 10:18:40,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 484 flow [2023-08-30 10:18:40,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:18:40,984 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 297 flow [2023-08-30 10:18:40,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-08-30 10:18:40,985 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 9 predicate places. [2023-08-30 10:18:40,985 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 297 flow [2023-08-30 10:18:40,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 307.57142857142856) internal successors, (2153), 7 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:40,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:40,986 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:40,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 10:18:41,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 10:18:41,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:41,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:41,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2094887398, now seen corresponding path program 2 times [2023-08-30 10:18:41,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:41,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883191135] [2023-08-30 10:18:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:18:41,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:41,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883191135] [2023-08-30 10:18:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883191135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:41,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:41,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:18:41,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175624571] [2023-08-30 10:18:41,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:41,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:41,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:41,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:18:41,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:41,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:41,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:18:41,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:46,928 INFO L130 PetriNetUnfolder]: 51964/79351 cut-off events. [2023-08-30 10:18:46,928 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 10:18:47,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154914 conditions, 79351 events. 51964/79351 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 2581. Compared 624219 event pairs, 22836 based on Foata normal form. 0/52773 useless extension candidates. Maximal degree in co-relation 154900. Up to 75338 conditions per place. [2023-08-30 10:18:47,336 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 129 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-30 10:18:47,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 147 transitions, 611 flow [2023-08-30 10:18:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2023-08-30 10:18:47,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228855721393035 [2023-08-30 10:18:47,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2023-08-30 10:18:47,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2023-08-30 10:18:47,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:47,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2023-08-30 10:18:47,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:47,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:47,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:47,341 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 297 flow. Second operand 3 states and 1051 transitions. [2023-08-30 10:18:47,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 147 transitions, 611 flow [2023-08-30 10:18:47,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 147 transitions, 597 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:18:47,345 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 299 flow [2023-08-30 10:18:47,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2023-08-30 10:18:47,345 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2023-08-30 10:18:47,345 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 299 flow [2023-08-30 10:18:47,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:47,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:47,346 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:47,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 10:18:47,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:47,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:47,346 INFO L85 PathProgramCache]: Analyzing trace with hash -946064420, now seen corresponding path program 1 times [2023-08-30 10:18:47,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:47,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384287958] [2023-08-30 10:18:47,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:47,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:18:47,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:47,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384287958] [2023-08-30 10:18:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384287958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:18:47,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453908339] [2023-08-30 10:18:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:47,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:18:47,744 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:18:47,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:18:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:47,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:18:47,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:18:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:18:47,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:18:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:18:48,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453908339] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:18:48,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:18:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:18:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331129724] [2023-08-30 10:18:48,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:18:48,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:18:48,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:18:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:18:48,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:18:48,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 299 flow. Second operand has 13 states, 13 states have (on average 307.61538461538464) internal successors, (3999), 13 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:48,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:48,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:18:48,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:55,234 INFO L130 PetriNetUnfolder]: 52627/79298 cut-off events. [2023-08-30 10:18:55,235 INFO L131 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2023-08-30 10:18:55,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157121 conditions, 79298 events. 52627/79298 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 2566. Compared 609521 event pairs, 47124 based on Foata normal form. 6/53321 useless extension candidates. Maximal degree in co-relation 157106. Up to 75361 conditions per place. [2023-08-30 10:18:55,677 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 101 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2023-08-30 10:18:55,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 559 flow [2023-08-30 10:18:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:18:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:18:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3789 transitions. [2023-08-30 10:18:55,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126865671641793 [2023-08-30 10:18:55,680 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3789 transitions. [2023-08-30 10:18:55,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3789 transitions. [2023-08-30 10:18:55,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:55,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3789 transitions. [2023-08-30 10:18:55,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 315.75) internal successors, (3789), 12 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,688 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,689 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 299 flow. Second operand 12 states and 3789 transitions. [2023-08-30 10:18:55,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 559 flow [2023-08-30 10:18:55,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:18:55,694 INFO L231 Difference]: Finished difference. Result has 141 places, 128 transitions, 381 flow [2023-08-30 10:18:55,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2023-08-30 10:18:55,695 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 27 predicate places. [2023-08-30 10:18:55,695 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 381 flow [2023-08-30 10:18:55,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 307.61538461538464) internal successors, (3999), 13 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:55,696 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:55,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:18:55,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 10:18:55,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:55,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:55,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1072809866, now seen corresponding path program 1 times [2023-08-30 10:18:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397500868] [2023-08-30 10:18:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:55,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:18:55,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:55,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397500868] [2023-08-30 10:18:55,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397500868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:55,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:55,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:18:55,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521292455] [2023-08-30 10:18:55,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:55,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:55,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:55,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:55,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:56,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:18:56,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:56,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:56,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:18:56,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:01,976 INFO L130 PetriNetUnfolder]: 50009/78595 cut-off events. [2023-08-30 10:19:01,976 INFO L131 PetriNetUnfolder]: For 742/742 co-relation queries the response was YES. [2023-08-30 10:19:02,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154218 conditions, 78595 events. 50009/78595 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 2222. Compared 653049 event pairs, 2666 based on Foata normal form. 0/53840 useless extension candidates. Maximal degree in co-relation 154196. Up to 69200 conditions per place. [2023-08-30 10:19:02,459 INFO L137 encePairwiseOnDemand]: 666/670 looper letters, 155 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-08-30 10:19:02,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 175 transitions, 791 flow [2023-08-30 10:19:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1067 transitions. [2023-08-30 10:19:02,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308457711442786 [2023-08-30 10:19:02,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1067 transitions. [2023-08-30 10:19:02,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1067 transitions. [2023-08-30 10:19:02,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:02,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1067 transitions. [2023-08-30 10:19:02,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.6666666666667) internal successors, (1067), 3 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:02,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:02,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:02,463 INFO L175 Difference]: Start difference. First operand has 141 places, 128 transitions, 381 flow. Second operand 3 states and 1067 transitions. [2023-08-30 10:19:02,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 175 transitions, 791 flow [2023-08-30 10:19:02,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 175 transitions, 743 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:19:02,469 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 345 flow [2023-08-30 10:19:02,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2023-08-30 10:19:02,470 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 24 predicate places. [2023-08-30 10:19:02,470 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 345 flow [2023-08-30 10:19:02,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:02,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:02,470 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:02,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:19:02,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:02,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:02,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1927567791, now seen corresponding path program 1 times [2023-08-30 10:19:02,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:02,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635278704] [2023-08-30 10:19:02,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:02,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:03,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:03,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635278704] [2023-08-30 10:19:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635278704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:03,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:19:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326524130] [2023-08-30 10:19:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:03,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:19:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:19:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:19:05,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 670 [2023-08-30 10:19:05,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:05,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:05,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 670 [2023-08-30 10:19:05,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:16,846 INFO L130 PetriNetUnfolder]: 90224/136752 cut-off events. [2023-08-30 10:19:16,846 INFO L131 PetriNetUnfolder]: For 10871/10871 co-relation queries the response was YES. [2023-08-30 10:19:17,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276573 conditions, 136752 events. 90224/136752 cut-off events. For 10871/10871 co-relation queries the response was YES. Maximal size of possible extension queue 4246. Compared 1151359 event pairs, 16979 based on Foata normal form. 0/93232 useless extension candidates. Maximal degree in co-relation 276552. Up to 76367 conditions per place. [2023-08-30 10:19:17,735 INFO L137 encePairwiseOnDemand]: 653/670 looper letters, 358 selfloop transitions, 30 changer transitions 0/404 dead transitions. [2023-08-30 10:19:17,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 404 transitions, 1757 flow [2023-08-30 10:19:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:19:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:19:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2439 transitions. [2023-08-30 10:19:17,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520042643923241 [2023-08-30 10:19:17,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2439 transitions. [2023-08-30 10:19:17,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2439 transitions. [2023-08-30 10:19:17,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:17,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2439 transitions. [2023-08-30 10:19:17,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 348.42857142857144) internal successors, (2439), 7 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:17,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 670.0) internal successors, (5360), 8 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:17,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 670.0) internal successors, (5360), 8 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:17,744 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 345 flow. Second operand 7 states and 2439 transitions. [2023-08-30 10:19:17,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 404 transitions, 1757 flow [2023-08-30 10:19:17,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 404 transitions, 1744 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:19:17,758 INFO L231 Difference]: Finished difference. Result has 148 places, 157 transitions, 549 flow [2023-08-30 10:19:17,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=549, PETRI_PLACES=148, PETRI_TRANSITIONS=157} [2023-08-30 10:19:17,759 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 34 predicate places. [2023-08-30 10:19:17,759 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 157 transitions, 549 flow [2023-08-30 10:19:17,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:17,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:17,760 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:17,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 10:19:17,760 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:17,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1072809938, now seen corresponding path program 1 times [2023-08-30 10:19:17,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824502698] [2023-08-30 10:19:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:17,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824502698] [2023-08-30 10:19:17,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824502698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:17,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:17,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:17,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069306846] [2023-08-30 10:19:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:17,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:17,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:17,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:17,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:19:17,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 157 transitions, 549 flow. Second operand has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:17,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:17,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:19:17,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:28,019 INFO L130 PetriNetUnfolder]: 87250/132811 cut-off events. [2023-08-30 10:19:28,019 INFO L131 PetriNetUnfolder]: For 37116/37118 co-relation queries the response was YES. [2023-08-30 10:19:28,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300241 conditions, 132811 events. 87250/132811 cut-off events. For 37116/37118 co-relation queries the response was YES. Maximal size of possible extension queue 4151. Compared 1120350 event pairs, 71713 based on Foata normal form. 1115/97275 useless extension candidates. Maximal degree in co-relation 300213. Up to 127811 conditions per place. [2023-08-30 10:19:29,113 INFO L137 encePairwiseOnDemand]: 668/670 looper letters, 139 selfloop transitions, 1 changer transitions 0/156 dead transitions. [2023-08-30 10:19:29,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 156 transitions, 825 flow [2023-08-30 10:19:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1021 transitions. [2023-08-30 10:19:29,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079601990049751 [2023-08-30 10:19:29,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1021 transitions. [2023-08-30 10:19:29,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1021 transitions. [2023-08-30 10:19:29,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:29,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1021 transitions. [2023-08-30 10:19:29,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:29,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:29,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:29,117 INFO L175 Difference]: Start difference. First operand has 148 places, 157 transitions, 549 flow. Second operand 3 states and 1021 transitions. [2023-08-30 10:19:29,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 156 transitions, 825 flow [2023-08-30 10:19:29,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 825 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:19:29,189 INFO L231 Difference]: Finished difference. Result has 149 places, 156 transitions, 547 flow [2023-08-30 10:19:29,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=547, PETRI_PLACES=149, PETRI_TRANSITIONS=156} [2023-08-30 10:19:29,190 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 35 predicate places. [2023-08-30 10:19:29,190 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 156 transitions, 547 flow [2023-08-30 10:19:29,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:29,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:29,190 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:29,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 10:19:29,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:29,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:29,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1033618994, now seen corresponding path program 1 times [2023-08-30 10:19:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:29,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452276539] [2023-08-30 10:19:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:29,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:29,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452276539] [2023-08-30 10:19:29,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452276539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:29,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:29,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383394566] [2023-08-30 10:19:29,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:29,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:29,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:29,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:19:29,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 156 transitions, 547 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:29,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:29,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:19:29,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:48,378 INFO L130 PetriNetUnfolder]: 152668/231101 cut-off events. [2023-08-30 10:19:48,378 INFO L131 PetriNetUnfolder]: For 64429/64458 co-relation queries the response was YES. [2023-08-30 10:19:49,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524422 conditions, 231101 events. 152668/231101 cut-off events. For 64429/64458 co-relation queries the response was YES. Maximal size of possible extension queue 6707. Compared 2040183 event pairs, 95638 based on Foata normal form. 1412/171707 useless extension candidates. Maximal degree in co-relation 524393. Up to 130751 conditions per place. [2023-08-30 10:19:50,574 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 257 selfloop transitions, 2 changer transitions 0/275 dead transitions. [2023-08-30 10:19:50,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 275 transitions, 1463 flow [2023-08-30 10:19:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2023-08-30 10:19:50,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537313432835821 [2023-08-30 10:19:50,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2023-08-30 10:19:50,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2023-08-30 10:19:50,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:50,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2023-08-30 10:19:50,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:50,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:50,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:50,578 INFO L175 Difference]: Start difference. First operand has 149 places, 156 transitions, 547 flow. Second operand 3 states and 1113 transitions. [2023-08-30 10:19:50,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 275 transitions, 1463 flow [2023-08-30 10:19:51,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 1462 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:19:51,724 INFO L231 Difference]: Finished difference. Result has 151 places, 157 transitions, 562 flow [2023-08-30 10:19:51,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=151, PETRI_TRANSITIONS=157} [2023-08-30 10:19:51,724 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 37 predicate places. [2023-08-30 10:19:51,725 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 157 transitions, 562 flow [2023-08-30 10:19:51,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:51,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:51,725 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:51,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:19:51,726 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:51,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:51,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2052626515, now seen corresponding path program 1 times [2023-08-30 10:19:51,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:51,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178752563] [2023-08-30 10:19:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:51,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:51,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:51,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178752563] [2023-08-30 10:19:51,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178752563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:51,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753119008] [2023-08-30 10:19:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:51,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:51,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:51,897 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:19:51,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:19:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:52,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:19:52,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:52,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:52,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753119008] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:52,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:52,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:19:52,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592287892] [2023-08-30 10:19:52,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:52,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:19:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:19:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:19:52,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:19:52,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 157 transitions, 562 flow. Second operand has 7 states, 7 states have (on average 308.7142857142857) internal successors, (2161), 7 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:52,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:52,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:19:52,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:55,381 INFO L130 PetriNetUnfolder]: 10625/18442 cut-off events. [2023-08-30 10:19:55,381 INFO L131 PetriNetUnfolder]: For 13256/13256 co-relation queries the response was YES. [2023-08-30 10:19:55,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53408 conditions, 18442 events. 10625/18442 cut-off events. For 13256/13256 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 141507 event pairs, 697 based on Foata normal form. 2038/16957 useless extension candidates. Maximal degree in co-relation 53378. Up to 12189 conditions per place. [2023-08-30 10:19:55,469 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 166 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2023-08-30 10:19:55,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 176 transitions, 986 flow [2023-08-30 10:19:55,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:19:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:19:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1660 transitions. [2023-08-30 10:19:55,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955223880597015 [2023-08-30 10:19:55,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1660 transitions. [2023-08-30 10:19:55,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1660 transitions. [2023-08-30 10:19:55,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:55,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1660 transitions. [2023-08-30 10:19:55,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:55,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:55,476 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:55,476 INFO L175 Difference]: Start difference. First operand has 151 places, 157 transitions, 562 flow. Second operand 5 states and 1660 transitions. [2023-08-30 10:19:55,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 176 transitions, 986 flow [2023-08-30 10:19:55,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 176 transitions, 956 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-30 10:19:55,588 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 330 flow [2023-08-30 10:19:55,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2023-08-30 10:19:55,588 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -13 predicate places. [2023-08-30 10:19:55,588 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 330 flow [2023-08-30 10:19:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 308.7142857142857) internal successors, (2161), 7 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:55,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:55,589 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:55,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 10:19:55,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-30 10:19:55,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:55,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:55,795 INFO L85 PathProgramCache]: Analyzing trace with hash -472615044, now seen corresponding path program 1 times [2023-08-30 10:19:55,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:55,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565716750] [2023-08-30 10:19:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:55,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:56,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:56,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565716750] [2023-08-30 10:19:56,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565716750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:56,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035162802] [2023-08-30 10:19:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:56,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:56,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:56,577 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:19:56,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:19:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:56,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:19:56,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:56,779 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 [2023-08-30 10:19:57,403 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:19:57,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:19:57,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:19:58,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:19:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:58,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:58,381 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1149 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1149) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|)))) is different from false [2023-08-30 10:19:58,493 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1149 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1149) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483650))) is different from false [2023-08-30 10:19:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:19:59,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035162802] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:59,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:59,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 10:19:59,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90252620] [2023-08-30 10:19:59,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:59,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:19:59,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:19:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=84, Unknown=2, NotChecked=38, Total=156 [2023-08-30 10:20:01,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:20:02,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 670 [2023-08-30 10:20:02,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 330 flow. Second operand has 13 states, 13 states have (on average 263.61538461538464) internal successors, (3427), 13 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:02,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:02,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 670 [2023-08-30 10:20:02,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:06,908 INFO L130 PetriNetUnfolder]: 10178/16660 cut-off events. [2023-08-30 10:20:06,909 INFO L131 PetriNetUnfolder]: For 23752/23752 co-relation queries the response was YES. [2023-08-30 10:20:07,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48561 conditions, 16660 events. 10178/16660 cut-off events. For 23752/23752 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 119924 event pairs, 1775 based on Foata normal form. 92/13432 useless extension candidates. Maximal degree in co-relation 48534. Up to 8577 conditions per place. [2023-08-30 10:20:07,068 INFO L137 encePairwiseOnDemand]: 660/670 looper letters, 151 selfloop transitions, 13 changer transitions 0/171 dead transitions. [2023-08-30 10:20:07,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 171 transitions, 924 flow [2023-08-30 10:20:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:20:07,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:20:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2023-08-30 10:20:07,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42512437810945275 [2023-08-30 10:20:07,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1709 transitions. [2023-08-30 10:20:07,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1709 transitions. [2023-08-30 10:20:07,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:07,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1709 transitions. [2023-08-30 10:20:07,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 6 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:07,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:07,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:07,074 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 330 flow. Second operand 6 states and 1709 transitions. [2023-08-30 10:20:07,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 171 transitions, 924 flow [2023-08-30 10:20:07,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 171 transitions, 905 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:20:07,083 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 374 flow [2023-08-30 10:20:07,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2023-08-30 10:20:07,084 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -9 predicate places. [2023-08-30 10:20:07,084 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 374 flow [2023-08-30 10:20:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 263.61538461538464) internal successors, (3427), 13 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:07,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:07,085 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:07,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:07,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:07,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:07,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:07,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1294049503, now seen corresponding path program 1 times [2023-08-30 10:20:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:07,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887180072] [2023-08-30 10:20:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:07,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:08,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887180072] [2023-08-30 10:20:08,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887180072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:08,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:08,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:20:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609865947] [2023-08-30 10:20:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:20:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:20:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:20:11,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 670 [2023-08-30 10:20:11,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 291.75) internal successors, (2334), 8 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:11,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:11,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 670 [2023-08-30 10:20:11,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:16,465 INFO L130 PetriNetUnfolder]: 11094/18192 cut-off events. [2023-08-30 10:20:16,465 INFO L131 PetriNetUnfolder]: For 22106/22106 co-relation queries the response was YES. [2023-08-30 10:20:16,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52311 conditions, 18192 events. 11094/18192 cut-off events. For 22106/22106 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 132837 event pairs, 1357 based on Foata normal form. 0/14546 useless extension candidates. Maximal degree in co-relation 52282. Up to 8535 conditions per place. [2023-08-30 10:20:16,554 INFO L137 encePairwiseOnDemand]: 657/670 looper letters, 202 selfloop transitions, 25 changer transitions 0/234 dead transitions. [2023-08-30 10:20:16,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 234 transitions, 1249 flow [2023-08-30 10:20:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:20:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:20:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2525 transitions. [2023-08-30 10:20:16,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710820895522388 [2023-08-30 10:20:16,557 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2525 transitions. [2023-08-30 10:20:16,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2525 transitions. [2023-08-30 10:20:16,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:16,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2525 transitions. [2023-08-30 10:20:16,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 315.625) internal successors, (2525), 8 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 670.0) internal successors, (6030), 9 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,564 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 670.0) internal successors, (6030), 9 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,565 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 374 flow. Second operand 8 states and 2525 transitions. [2023-08-30 10:20:16,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 234 transitions, 1249 flow [2023-08-30 10:20:16,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 234 transitions, 1230 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:20:16,579 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 487 flow [2023-08-30 10:20:16,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2023-08-30 10:20:16,580 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2023-08-30 10:20:16,580 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 487 flow [2023-08-30 10:20:16,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 291.75) internal successors, (2334), 8 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:16,581 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:16,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 10:20:16,581 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:16,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1294049504, now seen corresponding path program 1 times [2023-08-30 10:20:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:16,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087603466] [2023-08-30 10:20:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:16,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:16,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:16,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087603466] [2023-08-30 10:20:16,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087603466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:16,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:16,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:20:16,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916109439] [2023-08-30 10:20:16,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:16,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:16,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:16,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:16,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:17,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 670 [2023-08-30 10:20:17,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:17,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:17,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 670 [2023-08-30 10:20:17,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:19,669 INFO L130 PetriNetUnfolder]: 12581/20854 cut-off events. [2023-08-30 10:20:19,669 INFO L131 PetriNetUnfolder]: For 41166/41166 co-relation queries the response was YES. [2023-08-30 10:20:19,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64848 conditions, 20854 events. 12581/20854 cut-off events. For 41166/41166 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 156888 event pairs, 6026 based on Foata normal form. 238/17565 useless extension candidates. Maximal degree in co-relation 64816. Up to 13608 conditions per place. [2023-08-30 10:20:19,769 INFO L137 encePairwiseOnDemand]: 661/670 looper letters, 114 selfloop transitions, 18 changer transitions 0/139 dead transitions. [2023-08-30 10:20:19,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 916 flow [2023-08-30 10:20:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 993 transitions. [2023-08-30 10:20:19,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49402985074626865 [2023-08-30 10:20:19,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 993 transitions. [2023-08-30 10:20:19,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 993 transitions. [2023-08-30 10:20:19,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:19,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 993 transitions. [2023-08-30 10:20:19,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:19,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:19,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:19,774 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 487 flow. Second operand 3 states and 993 transitions. [2023-08-30 10:20:19,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 916 flow [2023-08-30 10:20:19,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 139 transitions, 865 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 10:20:19,810 INFO L231 Difference]: Finished difference. Result has 112 places, 102 transitions, 577 flow [2023-08-30 10:20:19,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=112, PETRI_TRANSITIONS=102} [2023-08-30 10:20:19,811 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2023-08-30 10:20:19,811 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 102 transitions, 577 flow [2023-08-30 10:20:19,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:19,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:19,811 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:19,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 10:20:19,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:19,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash 322028013, now seen corresponding path program 1 times [2023-08-30 10:20:19,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:19,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299219160] [2023-08-30 10:20:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:19,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:20:20,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:20,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299219160] [2023-08-30 10:20:20,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299219160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:20,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688013029] [2023-08-30 10:20:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:20,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:20,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:20,339 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:20,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:20:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:20,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:20:20,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:20,478 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 [2023-08-30 10:20:20,981 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:20:20,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:20:21,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:20:21,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:20:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:20:21,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:20:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688013029] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:22,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:22,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 10:20:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309624084] [2023-08-30 10:20:22,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:20:22,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:22,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:20:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:20:28,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 670 [2023-08-30 10:20:28,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 102 transitions, 577 flow. Second operand has 13 states, 13 states have (on average 273.84615384615387) internal successors, (3560), 13 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:28,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:28,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 670 [2023-08-30 10:20:28,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:35,392 INFO L130 PetriNetUnfolder]: 15040/24976 cut-off events. [2023-08-30 10:20:35,392 INFO L131 PetriNetUnfolder]: For 70270/70270 co-relation queries the response was YES. [2023-08-30 10:20:35,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83573 conditions, 24976 events. 15040/24976 cut-off events. For 70270/70270 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 190645 event pairs, 2346 based on Foata normal form. 0/20761 useless extension candidates. Maximal degree in co-relation 83541. Up to 14716 conditions per place. [2023-08-30 10:20:35,604 INFO L137 encePairwiseOnDemand]: 660/670 looper letters, 174 selfloop transitions, 22 changer transitions 0/203 dead transitions. [2023-08-30 10:20:35,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 203 transitions, 1481 flow [2023-08-30 10:20:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:20:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:20:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1766 transitions. [2023-08-30 10:20:35,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393034825870647 [2023-08-30 10:20:35,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1766 transitions. [2023-08-30 10:20:35,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1766 transitions. [2023-08-30 10:20:35,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:35,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1766 transitions. [2023-08-30 10:20:35,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.3333333333333) internal successors, (1766), 6 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:35,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:35,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:35,611 INFO L175 Difference]: Start difference. First operand has 112 places, 102 transitions, 577 flow. Second operand 6 states and 1766 transitions. [2023-08-30 10:20:35,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 203 transitions, 1481 flow [2023-08-30 10:20:35,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 203 transitions, 1391 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 10:20:35,675 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 750 flow [2023-08-30 10:20:35,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2023-08-30 10:20:35,676 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2023-08-30 10:20:35,676 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 750 flow [2023-08-30 10:20:35,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 273.84615384615387) internal successors, (3560), 13 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:35,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:35,677 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:35,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-30 10:20:35,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:35,883 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:35,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1352962562, now seen corresponding path program 1 times [2023-08-30 10:20:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:35,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102912337] [2023-08-30 10:20:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:35,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:36,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:36,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102912337] [2023-08-30 10:20:36,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102912337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:36,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598475099] [2023-08-30 10:20:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:36,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:36,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:36,843 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:36,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:20:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:36,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:20:36,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:37,014 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 [2023-08-30 10:20:37,481 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:20:37,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:20:37,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:20:38,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-30 10:20:38,573 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 16 treesize of output 18 [2023-08-30 10:20:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:38,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:38,844 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1363 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))) is different from false [2023-08-30 10:20:38,919 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 Int) (v_ArrVal_1363 (Array Int Int))) (or (< v_ArrVal_1361 (+ |c_t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1361)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))) is different from false [2023-08-30 10:20:38,973 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 Int) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1363 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_1361 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1361)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:20:39,149 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 Int) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1363 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< v_ArrVal_1361 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1361)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|)))))) is different from false [2023-08-30 10:20:39,324 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 Int) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1363 (Array Int Int)) (v_ArrVal_1360 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1360))) (let ((.cse0 (select .cse1 |c_~#cache~0.base|))) (or (< v_ArrVal_1361 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store .cse1 |c_~#cache~0.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1361)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))))) is different from false [2023-08-30 10:20:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:20:40,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598475099] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:40,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:40,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 17 [2023-08-30 10:20:40,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42961687] [2023-08-30 10:20:40,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:40,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:20:40,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:40,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:20:40,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=144, Unknown=5, NotChecked=140, Total=342 [2023-08-30 10:20:40,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 670 [2023-08-30 10:20:40,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 750 flow. Second operand has 19 states, 19 states have (on average 257.1578947368421) internal successors, (4886), 19 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:40,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:40,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 670 [2023-08-30 10:20:40,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:49,068 INFO L130 PetriNetUnfolder]: 17154/28611 cut-off events. [2023-08-30 10:20:49,068 INFO L131 PetriNetUnfolder]: For 81991/81991 co-relation queries the response was YES. [2023-08-30 10:20:49,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98886 conditions, 28611 events. 17154/28611 cut-off events. For 81991/81991 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 224739 event pairs, 2979 based on Foata normal form. 248/25263 useless extension candidates. Maximal degree in co-relation 98849. Up to 13797 conditions per place. [2023-08-30 10:20:49,337 INFO L137 encePairwiseOnDemand]: 656/670 looper letters, 249 selfloop transitions, 52 changer transitions 0/308 dead transitions. [2023-08-30 10:20:49,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 308 transitions, 2176 flow [2023-08-30 10:20:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:20:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:20:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2780 transitions. [2023-08-30 10:20:49,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41492537313432837 [2023-08-30 10:20:49,340 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2780 transitions. [2023-08-30 10:20:49,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2780 transitions. [2023-08-30 10:20:49,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:49,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2780 transitions. [2023-08-30 10:20:49,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:49,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 670.0) internal successors, (7370), 11 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:49,347 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 670.0) internal successors, (7370), 11 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:49,348 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 750 flow. Second operand 10 states and 2780 transitions. [2023-08-30 10:20:49,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 308 transitions, 2176 flow [2023-08-30 10:20:49,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 308 transitions, 2174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:49,436 INFO L231 Difference]: Finished difference. Result has 133 places, 142 transitions, 1216 flow [2023-08-30 10:20:49,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1216, PETRI_PLACES=133, PETRI_TRANSITIONS=142} [2023-08-30 10:20:49,436 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 19 predicate places. [2023-08-30 10:20:49,436 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 142 transitions, 1216 flow [2023-08-30 10:20:49,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 257.1578947368421) internal successors, (4886), 19 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:49,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:49,437 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:49,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:49,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-30 10:20:49,638 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:49,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash 440647469, now seen corresponding path program 1 times [2023-08-30 10:20:49,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:49,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514100499] [2023-08-30 10:20:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:49,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:20:49,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514100499] [2023-08-30 10:20:49,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514100499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:49,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:49,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:20:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693766444] [2023-08-30 10:20:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:49,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:49,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:49,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:49,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:20:49,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 142 transitions, 1216 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:49,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:49,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:20:49,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:55,282 INFO L130 PetriNetUnfolder]: 26783/44793 cut-off events. [2023-08-30 10:20:55,282 INFO L131 PetriNetUnfolder]: For 190229/190229 co-relation queries the response was YES. [2023-08-30 10:20:55,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169419 conditions, 44793 events. 26783/44793 cut-off events. For 190229/190229 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 368060 event pairs, 13436 based on Foata normal form. 342/39930 useless extension candidates. Maximal degree in co-relation 169375. Up to 26902 conditions per place. [2023-08-30 10:20:55,770 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 245 selfloop transitions, 2 changer transitions 0/254 dead transitions. [2023-08-30 10:20:55,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 254 transitions, 2776 flow [2023-08-30 10:20:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-08-30 10:20:55,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508955223880597 [2023-08-30 10:20:55,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-08-30 10:20:55,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-08-30 10:20:55,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:55,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-08-30 10:20:55,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:55,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:55,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:55,775 INFO L175 Difference]: Start difference. First operand has 133 places, 142 transitions, 1216 flow. Second operand 3 states and 1023 transitions. [2023-08-30 10:20:55,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 254 transitions, 2776 flow [2023-08-30 10:20:56,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 254 transitions, 2655 flow, removed 48 selfloop flow, removed 3 redundant places. [2023-08-30 10:20:56,137 INFO L231 Difference]: Finished difference. Result has 133 places, 143 transitions, 1170 flow [2023-08-30 10:20:56,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1170, PETRI_PLACES=133, PETRI_TRANSITIONS=143} [2023-08-30 10:20:56,138 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 19 predicate places. [2023-08-30 10:20:56,138 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 143 transitions, 1170 flow [2023-08-30 10:20:56,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:56,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:56,138 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:56,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:20:56,138 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:56,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1352962561, now seen corresponding path program 1 times [2023-08-30 10:20:56,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:56,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754093061] [2023-08-30 10:20:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:56,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:58,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:58,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754093061] [2023-08-30 10:20:58,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754093061] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:58,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82292805] [2023-08-30 10:20:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:58,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:58,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:58,057 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:58,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:20:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:58,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:20:58,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:58,664 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:20:58,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:20:59,232 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 11 treesize of output 7 [2023-08-30 10:20:59,528 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 14 treesize of output 16 [2023-08-30 10:20:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:59,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:59,894 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1475 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1475) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483649)) is different from false [2023-08-30 10:20:59,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:20:59,959 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-30 10:20:59,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-30 10:21:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:21:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82292805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:21:00,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:21:00,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 18 [2023-08-30 10:21:00,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957843856] [2023-08-30 10:21:00,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:21:00,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:21:00,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:21:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:21:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=293, Unknown=1, NotChecked=34, Total=380 [2023-08-30 10:21:01,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 670 [2023-08-30 10:21:01,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 143 transitions, 1170 flow. Second operand has 20 states, 20 states have (on average 246.4) internal successors, (4928), 20 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:01,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:21:01,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 670 [2023-08-30 10:21:01,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:21:18,977 INFO L130 PetriNetUnfolder]: 35012/58499 cut-off events. [2023-08-30 10:21:18,977 INFO L131 PetriNetUnfolder]: For 223151/223151 co-relation queries the response was YES. [2023-08-30 10:21:19,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222874 conditions, 58499 events. 35012/58499 cut-off events. For 223151/223151 co-relation queries the response was YES. Maximal size of possible extension queue 1470. Compared 492290 event pairs, 9429 based on Foata normal form. 432/52095 useless extension candidates. Maximal degree in co-relation 222829. Up to 23350 conditions per place. [2023-08-30 10:21:19,903 INFO L137 encePairwiseOnDemand]: 654/670 looper letters, 394 selfloop transitions, 91 changer transitions 0/492 dead transitions. [2023-08-30 10:21:19,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 492 transitions, 4076 flow [2023-08-30 10:21:19,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:21:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:21:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4499 transitions. [2023-08-30 10:21:19,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39499561018437224 [2023-08-30 10:21:19,907 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4499 transitions. [2023-08-30 10:21:19,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4499 transitions. [2023-08-30 10:21:19,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:21:19,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4499 transitions. [2023-08-30 10:21:19,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 264.6470588235294) internal successors, (4499), 17 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:19,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 670.0) internal successors, (12060), 18 states have internal predecessors, (12060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:19,920 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 670.0) internal successors, (12060), 18 states have internal predecessors, (12060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:19,920 INFO L175 Difference]: Start difference. First operand has 133 places, 143 transitions, 1170 flow. Second operand 17 states and 4499 transitions. [2023-08-30 10:21:19,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 492 transitions, 4076 flow [2023-08-30 10:21:20,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 492 transitions, 3996 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:21:20,508 INFO L231 Difference]: Finished difference. Result has 157 places, 201 transitions, 2160 flow [2023-08-30 10:21:20,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2160, PETRI_PLACES=157, PETRI_TRANSITIONS=201} [2023-08-30 10:21:20,508 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 43 predicate places. [2023-08-30 10:21:20,508 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 201 transitions, 2160 flow [2023-08-30 10:21:20,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 246.4) internal successors, (4928), 20 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:20,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:21:20,509 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:21:20,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 10:21:20,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-30 10:21:20,715 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:21:20,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:21:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1027591379, now seen corresponding path program 1 times [2023-08-30 10:21:20,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:21:20,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939770380] [2023-08-30 10:21:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:20,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:21:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:21:20,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:21:20,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939770380] [2023-08-30 10:21:20,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939770380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:21:20,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:21:20,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:21:20,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591203818] [2023-08-30 10:21:20,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:21:20,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:21:20,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:21:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:21:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:21:21,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 670 [2023-08-30 10:21:21,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 201 transitions, 2160 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:21,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:21:21,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 670 [2023-08-30 10:21:21,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:21:29,848 INFO L130 PetriNetUnfolder]: 38243/65270 cut-off events. [2023-08-30 10:21:29,848 INFO L131 PetriNetUnfolder]: For 404538/404540 co-relation queries the response was YES. [2023-08-30 10:21:30,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283657 conditions, 65270 events. 38243/65270 cut-off events. For 404538/404540 co-relation queries the response was YES. Maximal size of possible extension queue 1648. Compared 574999 event pairs, 14412 based on Foata normal form. 0/57792 useless extension candidates. Maximal degree in co-relation 283602. Up to 37619 conditions per place. [2023-08-30 10:21:30,694 INFO L137 encePairwiseOnDemand]: 661/670 looper letters, 213 selfloop transitions, 86 changer transitions 0/306 dead transitions. [2023-08-30 10:21:30,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 306 transitions, 3810 flow [2023-08-30 10:21:30,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:21:30,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:21:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 993 transitions. [2023-08-30 10:21:30,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49402985074626865 [2023-08-30 10:21:30,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 993 transitions. [2023-08-30 10:21:30,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 993 transitions. [2023-08-30 10:21:30,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:21:30,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 993 transitions. [2023-08-30 10:21:30,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:30,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:30,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:30,699 INFO L175 Difference]: Start difference. First operand has 157 places, 201 transitions, 2160 flow. Second operand 3 states and 993 transitions. [2023-08-30 10:21:30,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 306 transitions, 3810 flow [2023-08-30 10:21:31,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 306 transitions, 3739 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 10:21:31,974 INFO L231 Difference]: Finished difference. Result has 157 places, 236 transitions, 2979 flow [2023-08-30 10:21:31,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2979, PETRI_PLACES=157, PETRI_TRANSITIONS=236} [2023-08-30 10:21:31,974 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 43 predicate places. [2023-08-30 10:21:31,974 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 236 transitions, 2979 flow [2023-08-30 10:21:31,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:31,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:21:31,975 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:21:31,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:21:31,975 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:21:31,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:21:31,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1027591380, now seen corresponding path program 1 times [2023-08-30 10:21:31,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:21:31,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50652354] [2023-08-30 10:21:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:31,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:21:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:21:32,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:21:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50652354] [2023-08-30 10:21:32,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50652354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:21:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410364950] [2023-08-30 10:21:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:32,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:21:32,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:21:32,750 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:21:32,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:21:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:32,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:21:32,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:21:32,922 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 [2023-08-30 10:21:33,390 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:21:33,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:21:33,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:21:33,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:21:34,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-30 10:21:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:21:34,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:21:35,311 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1589 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1589) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) is different from false [2023-08-30 10:21:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-30 10:21:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410364950] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:21:35,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:21:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 10:21:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099091722] [2023-08-30 10:21:35,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:21:35,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:21:35,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:21:35,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:21:35,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=245, Unknown=1, NotChecked=32, Total=342 [2023-08-30 10:21:37,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 670 [2023-08-30 10:21:37,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 236 transitions, 2979 flow. Second operand has 19 states, 19 states have (on average 257.57894736842104) internal successors, (4894), 19 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:37,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:21:37,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 670 [2023-08-30 10:21:37,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:21:55,428 INFO L130 PetriNetUnfolder]: 42757/73464 cut-off events. [2023-08-30 10:21:55,428 INFO L131 PetriNetUnfolder]: For 594193/594195 co-relation queries the response was YES. [2023-08-30 10:21:56,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347253 conditions, 73464 events. 42757/73464 cut-off events. For 594193/594195 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 662507 event pairs, 6668 based on Foata normal form. 680/68163 useless extension candidates. Maximal degree in co-relation 347199. Up to 35495 conditions per place. [2023-08-30 10:21:56,391 INFO L137 encePairwiseOnDemand]: 655/670 looper letters, 530 selfloop transitions, 185 changer transitions 0/722 dead transitions. [2023-08-30 10:21:56,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 722 transitions, 8974 flow [2023-08-30 10:21:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:21:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:21:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3902 transitions. [2023-08-30 10:21:56,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159914712153518 [2023-08-30 10:21:56,401 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3902 transitions. [2023-08-30 10:21:56,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3902 transitions. [2023-08-30 10:21:56,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:21:56,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3902 transitions. [2023-08-30 10:21:56,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 278.7142857142857) internal successors, (3902), 14 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:56,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 670.0) internal successors, (10050), 15 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:56,411 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 670.0) internal successors, (10050), 15 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:56,411 INFO L175 Difference]: Start difference. First operand has 157 places, 236 transitions, 2979 flow. Second operand 14 states and 3902 transitions. [2023-08-30 10:21:56,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 722 transitions, 8974 flow [2023-08-30 10:21:58,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 722 transitions, 8688 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 10:21:58,031 INFO L231 Difference]: Finished difference. Result has 176 places, 370 transitions, 5594 flow [2023-08-30 10:21:58,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5594, PETRI_PLACES=176, PETRI_TRANSITIONS=370} [2023-08-30 10:21:58,032 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 62 predicate places. [2023-08-30 10:21:58,032 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 370 transitions, 5594 flow [2023-08-30 10:21:58,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 257.57894736842104) internal successors, (4894), 19 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:58,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:21:58,033 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:21:58,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 10:21:58,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-30 10:21:58,234 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:21:58,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:21:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1247813029, now seen corresponding path program 1 times [2023-08-30 10:21:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:21:58,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165240220] [2023-08-30 10:21:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:21:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:21:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:21:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165240220] [2023-08-30 10:21:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165240220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:21:58,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:21:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:21:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896956261] [2023-08-30 10:21:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:21:58,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:21:58,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:21:58,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:21:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:21:58,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:21:58,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 370 transitions, 5594 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:58,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:21:58,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:21:58,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:09,795 INFO L130 PetriNetUnfolder]: 41324/71226 cut-off events. [2023-08-30 10:22:09,795 INFO L131 PetriNetUnfolder]: For 653620/653622 co-relation queries the response was YES. [2023-08-30 10:22:10,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356791 conditions, 71226 events. 41324/71226 cut-off events. For 653620/653622 co-relation queries the response was YES. Maximal size of possible extension queue 1819. Compared 640117 event pairs, 20200 based on Foata normal form. 0/66241 useless extension candidates. Maximal degree in co-relation 356728. Up to 60797 conditions per place. [2023-08-30 10:22:10,950 INFO L137 encePairwiseOnDemand]: 666/670 looper letters, 435 selfloop transitions, 14 changer transitions 0/456 dead transitions. [2023-08-30 10:22:10,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 456 transitions, 7654 flow [2023-08-30 10:22:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:22:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:22:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-08-30 10:22:10,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49701492537313435 [2023-08-30 10:22:10,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-08-30 10:22:10,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-08-30 10:22:10,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:10,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-08-30 10:22:10,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:10,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:10,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:10,953 INFO L175 Difference]: Start difference. First operand has 176 places, 370 transitions, 5594 flow. Second operand 3 states and 999 transitions. [2023-08-30 10:22:10,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 456 transitions, 7654 flow [2023-08-30 10:22:13,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 456 transitions, 7252 flow, removed 137 selfloop flow, removed 4 redundant places. [2023-08-30 10:22:13,679 INFO L231 Difference]: Finished difference. Result has 173 places, 369 transitions, 5277 flow [2023-08-30 10:22:13,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=5249, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5277, PETRI_PLACES=173, PETRI_TRANSITIONS=369} [2023-08-30 10:22:13,680 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 59 predicate places. [2023-08-30 10:22:13,680 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 369 transitions, 5277 flow [2023-08-30 10:22:13,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:13,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:13,681 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:13,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 10:22:13,681 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:22:13,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1247813142, now seen corresponding path program 1 times [2023-08-30 10:22:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443975933] [2023-08-30 10:22:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:13,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:13,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443975933] [2023-08-30 10:22:13,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443975933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:13,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:13,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:22:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551464429] [2023-08-30 10:22:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:13,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:22:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:22:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:22:13,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:22:13,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 369 transitions, 5277 flow. Second operand has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:13,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:13,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:22:13,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:24,993 INFO L130 PetriNetUnfolder]: 39899/68907 cut-off events. [2023-08-30 10:22:24,993 INFO L131 PetriNetUnfolder]: For 602701/602703 co-relation queries the response was YES. [2023-08-30 10:22:25,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342513 conditions, 68907 events. 39899/68907 cut-off events. For 602701/602703 co-relation queries the response was YES. Maximal size of possible extension queue 1741. Compared 620045 event pairs, 23770 based on Foata normal form. 915/65816 useless extension candidates. Maximal degree in co-relation 342451. Up to 64595 conditions per place. [2023-08-30 10:22:26,070 INFO L137 encePairwiseOnDemand]: 668/670 looper letters, 407 selfloop transitions, 2 changer transitions 0/416 dead transitions. [2023-08-30 10:22:26,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 416 transitions, 6516 flow [2023-08-30 10:22:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:22:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:22:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1000 transitions. [2023-08-30 10:22:26,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975124378109453 [2023-08-30 10:22:26,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1000 transitions. [2023-08-30 10:22:26,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1000 transitions. [2023-08-30 10:22:26,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:26,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1000 transitions. [2023-08-30 10:22:26,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.3333333333333) internal successors, (1000), 3 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:26,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:26,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:26,073 INFO L175 Difference]: Start difference. First operand has 173 places, 369 transitions, 5277 flow. Second operand 3 states and 1000 transitions. [2023-08-30 10:22:26,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 416 transitions, 6516 flow [2023-08-30 10:22:28,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 416 transitions, 6502 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:28,750 INFO L231 Difference]: Finished difference. Result has 173 places, 368 transitions, 5263 flow [2023-08-30 10:22:28,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=5259, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5263, PETRI_PLACES=173, PETRI_TRANSITIONS=368} [2023-08-30 10:22:28,750 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 59 predicate places. [2023-08-30 10:22:28,751 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 368 transitions, 5263 flow [2023-08-30 10:22:28,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:28,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:28,751 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:28,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:22:28,751 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:22:28,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 95287614, now seen corresponding path program 1 times [2023-08-30 10:22:28,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:28,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045048433] [2023-08-30 10:22:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:22:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045048433] [2023-08-30 10:22:29,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045048433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:29,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:29,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:22:29,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274970340] [2023-08-30 10:22:29,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:29,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:22:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:29,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:22:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:22:31,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 670 [2023-08-30 10:22:31,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 368 transitions, 5263 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:31,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 670 [2023-08-30 10:22:31,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:45,157 INFO L130 PetriNetUnfolder]: 48097/84070 cut-off events. [2023-08-30 10:22:45,157 INFO L131 PetriNetUnfolder]: For 775728/775730 co-relation queries the response was YES. [2023-08-30 10:22:46,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426285 conditions, 84070 events. 48097/84070 cut-off events. For 775728/775730 co-relation queries the response was YES. Maximal size of possible extension queue 2176. Compared 790325 event pairs, 11772 based on Foata normal form. 3580/82011 useless extension candidates. Maximal degree in co-relation 426222. Up to 41752 conditions per place. [2023-08-30 10:22:46,421 INFO L137 encePairwiseOnDemand]: 654/670 looper letters, 603 selfloop transitions, 34 changer transitions 0/643 dead transitions. [2023-08-30 10:22:46,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 643 transitions, 10359 flow [2023-08-30 10:22:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:22:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:22:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1515 transitions. [2023-08-30 10:22:46,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45223880597014926 [2023-08-30 10:22:46,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1515 transitions. [2023-08-30 10:22:46,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1515 transitions. [2023-08-30 10:22:46,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:46,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1515 transitions. [2023-08-30 10:22:46,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:46,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:46,426 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:46,426 INFO L175 Difference]: Start difference. First operand has 173 places, 368 transitions, 5263 flow. Second operand 5 states and 1515 transitions. [2023-08-30 10:22:46,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 643 transitions, 10359 flow [2023-08-30 10:22:49,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 643 transitions, 10355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:49,673 INFO L231 Difference]: Finished difference. Result has 177 places, 395 transitions, 5573 flow [2023-08-30 10:22:49,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5573, PETRI_PLACES=177, PETRI_TRANSITIONS=395} [2023-08-30 10:22:49,673 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 63 predicate places. [2023-08-30 10:22:49,673 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 395 transitions, 5573 flow [2023-08-30 10:22:49,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:49,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:49,674 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:49,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 10:22:49,674 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:22:49,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:49,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546846, now seen corresponding path program 1 times [2023-08-30 10:22:49,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:49,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636379135] [2023-08-30 10:22:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:49,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:22:50,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636379135] [2023-08-30 10:22:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636379135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421203499] [2023-08-30 10:22:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:50,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:50,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:50,671 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:22:50,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 10:22:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:50,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 10:22:50,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:52,316 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 11 treesize of output 7 [2023-08-30 10:22:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:22:53,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:22:53,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421203499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:53,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:22:53,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2023-08-30 10:22:53,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723952888] [2023-08-30 10:22:53,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:53,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:22:53,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:22:53,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:22:56,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 670 [2023-08-30 10:22:56,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 395 transitions, 5573 flow. Second operand has 9 states, 9 states have (on average 285.1111111111111) internal successors, (2566), 9 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:56,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:56,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 670 [2023-08-30 10:22:56,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:23,428 INFO L130 PetriNetUnfolder]: 59385/104672 cut-off events. [2023-08-30 10:23:23,428 INFO L131 PetriNetUnfolder]: For 978899/978944 co-relation queries the response was YES. [2023-08-30 10:23:24,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558181 conditions, 104672 events. 59385/104672 cut-off events. For 978899/978944 co-relation queries the response was YES. Maximal size of possible extension queue 2661. Compared 1017661 event pairs, 14830 based on Foata normal form. 3/97620 useless extension candidates. Maximal degree in co-relation 558116. Up to 49964 conditions per place. [2023-08-30 10:23:25,198 INFO L137 encePairwiseOnDemand]: 651/670 looper letters, 1081 selfloop transitions, 427 changer transitions 0/1515 dead transitions. [2023-08-30 10:23:25,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 1515 transitions, 22548 flow [2023-08-30 10:23:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 10:23:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 10:23:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6640 transitions. [2023-08-30 10:23:25,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45047489823609227 [2023-08-30 10:23:25,205 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6640 transitions. [2023-08-30 10:23:25,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6640 transitions. [2023-08-30 10:23:25,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:25,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6640 transitions. [2023-08-30 10:23:25,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 301.8181818181818) internal successors, (6640), 22 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:25,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 670.0) internal successors, (15410), 23 states have internal predecessors, (15410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:25,222 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 670.0) internal successors, (15410), 23 states have internal predecessors, (15410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:25,222 INFO L175 Difference]: Start difference. First operand has 177 places, 395 transitions, 5573 flow. Second operand 22 states and 6640 transitions. [2023-08-30 10:23:25,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 1515 transitions, 22548 flow [2023-08-30 10:23:30,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 1515 transitions, 22547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:23:30,324 INFO L231 Difference]: Finished difference. Result has 214 places, 818 transitions, 14585 flow [2023-08-30 10:23:30,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=14585, PETRI_PLACES=214, PETRI_TRANSITIONS=818} [2023-08-30 10:23:30,325 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 100 predicate places. [2023-08-30 10:23:30,326 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 818 transitions, 14585 flow [2023-08-30 10:23:30,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 285.1111111111111) internal successors, (2566), 9 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:30,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:30,326 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:30,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:30,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:30,532 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:23:30,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1766749540, now seen corresponding path program 2 times [2023-08-30 10:23:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941802373] [2023-08-30 10:23:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:30,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:31,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:31,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941802373] [2023-08-30 10:23:31,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941802373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:31,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:23:31,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:23:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956936712] [2023-08-30 10:23:31,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:31,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:23:31,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:31,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:23:31,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:23:34,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 670 [2023-08-30 10:23:34,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 818 transitions, 14585 flow. Second operand has 8 states, 8 states have (on average 285.5) internal successors, (2284), 8 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:34,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:34,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 670 [2023-08-30 10:23:34,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand