./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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 ../sv-benchmarks/c/termination-numeric/TwoWay.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 6e96af222dc7427442f09a30ad05a811063c14ee1b704442df6b3bb77339a035 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:07:24,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:07:24,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:07:24,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:07:24,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:07:24,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:07:24,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:07:24,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:07:24,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:07:24,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:07:24,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:07:24,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:07:24,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:07:24,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:07:24,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:07:24,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:07:24,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:07:24,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:07:24,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:07:24,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:07:24,735 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:07:24,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:07:24,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:07:24,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:07:24,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:07:24,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:07:24,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:07:24,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:07:24,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:07:24,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:07:24,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:07:24,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:07:24,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:07:24,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:07:24,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:07:24,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:07:24,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:07:24,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:07:24,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:07:24,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:07:24,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:07:24,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:07:24,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-13 02:07:24,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:07:24,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:07:24,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:07:24,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:07:24,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:07:24,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:07:24,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:07:24,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:07:24,766 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:07:24,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:07:24,767 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:07:24,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:07:24,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:07:24,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:07:24,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:07:24,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:07:24,767 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:07:24,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:07:24,768 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:07:24,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:07:24,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:07:24,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:07:24,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:07:24,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:07:24,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:07:24,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:07:24,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:07:24,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:07:24,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:07:24,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:07:24,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e96af222dc7427442f09a30ad05a811063c14ee1b704442df6b3bb77339a035 [2022-07-13 02:07:24,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:07:24,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:07:24,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:07:24,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:07:24,971 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:07:24,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/TwoWay.c [2022-07-13 02:07:25,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5ea8ffe/9c9b46cca79e454fbccf7b10652c9594/FLAG151e8f651 [2022-07-13 02:07:25,352 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:07:25,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/TwoWay.c [2022-07-13 02:07:25,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5ea8ffe/9c9b46cca79e454fbccf7b10652c9594/FLAG151e8f651 [2022-07-13 02:07:25,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5ea8ffe/9c9b46cca79e454fbccf7b10652c9594 [2022-07-13 02:07:25,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:07:25,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:07:25,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:07:25,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:07:25,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:07:25,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1e6cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25, skipping insertion in model container [2022-07-13 02:07:25,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:07:25,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:07:25,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:07:25,475 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:07:25,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:07:25,499 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:07:25,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25 WrapperNode [2022-07-13 02:07:25,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:07:25,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:07:25,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:07:25,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:07:25,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,516 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-13 02:07:25,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:07:25,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:07:25,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:07:25,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:07:25,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:07:25,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:07:25,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:07:25,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:07:25,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (1/1) ... [2022-07-13 02:07:25,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:07:25,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:25,548 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) [2022-07-13 02:07:25,550 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 [2022-07-13 02:07:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2022-07-13 02:07:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2022-07-13 02:07:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:07:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:07:25,611 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:07:25,612 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:07:25,707 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:07:25,712 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:07:25,712 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 02:07:25,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:07:25 BoogieIcfgContainer [2022-07-13 02:07:25,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:07:25,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:07:25,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:07:25,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:07:25,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:07:25" (1/3) ... [2022-07-13 02:07:25,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73076918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:07:25, skipping insertion in model container [2022-07-13 02:07:25,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:25" (2/3) ... [2022-07-13 02:07:25,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73076918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:07:25, skipping insertion in model container [2022-07-13 02:07:25,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:07:25" (3/3) ... [2022-07-13 02:07:25,719 INFO L111 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2022-07-13 02:07:25,729 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:07:25,729 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-13 02:07:25,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:07:25,765 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63cfe054, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57760a15 [2022-07-13 02:07:25,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 02:07:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:07:25,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:25,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:25,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:25,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1961604011, now seen corresponding path program 1 times [2022-07-13 02:07:25,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:25,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145852876] [2022-07-13 02:07:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:25,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:25,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:25,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145852876] [2022-07-13 02:07:25,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145852876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:25,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:25,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:07:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259381523] [2022-07-13 02:07:25,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:25,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:07:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:07:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:07:25,996 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:26,136 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-07-13 02:07:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 02:07:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 02:07:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:26,145 INFO L225 Difference]: With dead ends: 57 [2022-07-13 02:07:26,145 INFO L226 Difference]: Without dead ends: 52 [2022-07-13 02:07:26,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 02:07:26,150 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 54 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:26,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 128 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-13 02:07:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2022-07-13 02:07:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 33 states have internal predecessors, (41), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 02:07:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2022-07-13 02:07:26,208 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 9 [2022-07-13 02:07:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:26,208 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2022-07-13 02:07:26,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2022-07-13 02:07:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:07:26,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:26,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:26,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:07:26,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1961604203, now seen corresponding path program 1 times [2022-07-13 02:07:26,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:26,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088710483] [2022-07-13 02:07:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:26,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:26,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:26,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088710483] [2022-07-13 02:07:26,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088710483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:26,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:26,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:07:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112318227] [2022-07-13 02:07:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:26,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:07:26,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:07:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:07:26,233 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:26,246 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-07-13 02:07:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:07:26,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 02:07:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:26,247 INFO L225 Difference]: With dead ends: 46 [2022-07-13 02:07:26,247 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 02:07:26,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:26,249 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:26,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 26 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 02:07:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-13 02:07:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-13 02:07:26,253 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2022-07-13 02:07:26,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:26,253 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-13 02:07:26,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:26,254 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-13 02:07:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:07:26,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:26,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:07:26,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 680182238, now seen corresponding path program 1 times [2022-07-13 02:07:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:26,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418664954] [2022-07-13 02:07:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:26,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:26,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418664954] [2022-07-13 02:07:26,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418664954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:26,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:26,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:07:26,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574436904] [2022-07-13 02:07:26,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:26,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:07:26,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:26,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:07:26,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:07:26,279 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:26,292 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-13 02:07:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:07:26,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 02:07:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:26,293 INFO L225 Difference]: With dead ends: 19 [2022-07-13 02:07:26,293 INFO L226 Difference]: Without dead ends: 18 [2022-07-13 02:07:26,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:26,294 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:26,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-13 02:07:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-13 02:07:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-07-13 02:07:26,298 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2022-07-13 02:07:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:26,298 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-07-13 02:07:26,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-07-13 02:07:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 02:07:26,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:26,299 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:26,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:07:26,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1610134437, now seen corresponding path program 1 times [2022-07-13 02:07:26,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:26,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575329802] [2022-07-13 02:07:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:26,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:26,314 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:26,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724196132] [2022-07-13 02:07:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:26,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:26,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:26,317 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) [2022-07-13 02:07:26,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:07:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:26,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:07:26,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:07:26,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:07:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:26,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575329802] [2022-07-13 02:07:26,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:26,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724196132] [2022-07-13 02:07:26,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724196132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:26,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:26,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:07:26,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841752635] [2022-07-13 02:07:26,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:26,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:07:26,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:26,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:07:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:26,449 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:26,497 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-07-13 02:07:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:07:26,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-13 02:07:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:26,500 INFO L225 Difference]: With dead ends: 25 [2022-07-13 02:07:26,502 INFO L226 Difference]: Without dead ends: 24 [2022-07-13 02:07:26,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:07:26,503 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:26,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 33 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-13 02:07:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-07-13 02:07:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 02:07:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-07-13 02:07:26,507 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-07-13 02:07:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:26,507 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-07-13 02:07:26,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-07-13 02:07:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 02:07:26,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:26,508 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:26,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:26,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:26,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:26,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1625439951, now seen corresponding path program 1 times [2022-07-13 02:07:26,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:26,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732997714] [2022-07-13 02:07:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:26,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:26,736 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:26,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715843792] [2022-07-13 02:07:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:26,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:26,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:26,738 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) [2022-07-13 02:07:26,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:07:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:26,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 02:07:26,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:07:26,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:07:26,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732997714] [2022-07-13 02:07:26,840 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:26,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715843792] [2022-07-13 02:07:26,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715843792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:26,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:26,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 02:07:26,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444103666] [2022-07-13 02:07:26,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:26,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:07:26,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:26,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:07:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:07:26,850 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:26,923 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-07-13 02:07:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:07:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-13 02:07:26,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:26,926 INFO L225 Difference]: With dead ends: 24 [2022-07-13 02:07:26,926 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 02:07:26,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:07:26,936 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:26,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 42 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:26,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 02:07:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-13 02:07:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 02:07:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-07-13 02:07:26,945 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2022-07-13 02:07:26,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:26,945 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-07-13 02:07:26,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:26,946 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-07-13 02:07:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 02:07:26,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:26,948 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:26,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 02:07:27,164 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 [2022-07-13 02:07:27,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1619183520, now seen corresponding path program 1 times [2022-07-13 02:07:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:27,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784037503] [2022-07-13 02:07:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:27,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:27,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552907948] [2022-07-13 02:07:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:27,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:27,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:27,174 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) [2022-07-13 02:07:27,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:07:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:27,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 02:07:27,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 02:07:27,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 02:07:28,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:28,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784037503] [2022-07-13 02:07:28,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:28,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552907948] [2022-07-13 02:07:28,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552907948] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:28,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:07:28,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-07-13 02:07:28,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736401259] [2022-07-13 02:07:28,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:28,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 02:07:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:28,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 02:07:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:07:28,024 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 02:07:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:28,109 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-07-13 02:07:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:07:28,109 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-07-13 02:07:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:28,110 INFO L225 Difference]: With dead ends: 28 [2022-07-13 02:07:28,110 INFO L226 Difference]: Without dead ends: 27 [2022-07-13 02:07:28,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:07:28,111 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:28,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 98 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2022-07-13 02:07:28,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-13 02:07:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-13 02:07:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 02:07:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-07-13 02:07:28,114 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 28 [2022-07-13 02:07:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:28,114 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-07-13 02:07:28,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 02:07:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-07-13 02:07:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 02:07:28,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:28,115 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:28,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:28,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:28,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:28,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:28,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1344918486, now seen corresponding path program 1 times [2022-07-13 02:07:28,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:28,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574881332] [2022-07-13 02:07:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:28,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:28,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218133060] [2022-07-13 02:07:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:28,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:28,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:28,335 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) [2022-07-13 02:07:28,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:07:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:28,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:07:28,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:07:28,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:29,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:29,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574881332] [2022-07-13 02:07:29,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:29,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218133060] [2022-07-13 02:07:29,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218133060] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:29,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:29,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-07-13 02:07:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801836409] [2022-07-13 02:07:29,681 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:29,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:07:29,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:07:29,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:07:29,682 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:29,867 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-07-13 02:07:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:07:29,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-07-13 02:07:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:29,868 INFO L225 Difference]: With dead ends: 31 [2022-07-13 02:07:29,868 INFO L226 Difference]: Without dead ends: 30 [2022-07-13 02:07:29,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:07:29,869 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:29,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 52 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-07-13 02:07:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-13 02:07:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-07-13 02:07:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 02:07:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-07-13 02:07:29,872 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 29 [2022-07-13 02:07:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:29,872 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-07-13 02:07:29,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-07-13 02:07:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 02:07:29,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:29,873 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:29,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:30,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:30,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:30,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:30,084 INFO L85 PathProgramCache]: Analyzing trace with hash -740717581, now seen corresponding path program 2 times [2022-07-13 02:07:30,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:30,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780730191] [2022-07-13 02:07:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:30,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:30,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:30,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457958953] [2022-07-13 02:07:30,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:07:30,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:30,100 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) [2022-07-13 02:07:30,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:07:30,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:07:30,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:30,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 02:07:30,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 02:07:30,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:31,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:31,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780730191] [2022-07-13 02:07:31,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:31,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457958953] [2022-07-13 02:07:31,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457958953] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:31,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:31,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-07-13 02:07:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778891460] [2022-07-13 02:07:31,327 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:31,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:07:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:07:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-07-13 02:07:31,328 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 02:07:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:31,569 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2022-07-13 02:07:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:07:31,570 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2022-07-13 02:07:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:31,570 INFO L225 Difference]: With dead ends: 37 [2022-07-13 02:07:31,570 INFO L226 Difference]: Without dead ends: 36 [2022-07-13 02:07:31,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2022-07-13 02:07:31,571 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:31,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 125 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-13 02:07:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-07-13 02:07:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 02:07:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-07-13 02:07:31,574 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39 [2022-07-13 02:07:31,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:31,574 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-07-13 02:07:31,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 02:07:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-07-13 02:07:31,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 02:07:31,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:31,575 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:31,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:31,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:31,784 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:31,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:31,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1487408477, now seen corresponding path program 2 times [2022-07-13 02:07:31,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:31,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485019336] [2022-07-13 02:07:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:31,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:31,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:31,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930168212] [2022-07-13 02:07:31,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:07:31,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:31,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:31,795 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) [2022-07-13 02:07:31,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:07:31,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:07:31,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:31,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 02:07:31,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 02:07:31,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:35,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:35,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485019336] [2022-07-13 02:07:35,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:35,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930168212] [2022-07-13 02:07:35,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930168212] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:35,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:35,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-07-13 02:07:35,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466382772] [2022-07-13 02:07:35,069 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:35,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:07:35,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:07:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=289, Unknown=1, NotChecked=0, Total=342 [2022-07-13 02:07:35,070 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 14 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 02:07:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:35,348 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-07-13 02:07:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:07:35,349 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 14 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2022-07-13 02:07:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:35,350 INFO L225 Difference]: With dead ends: 36 [2022-07-13 02:07:35,350 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 02:07:35,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=128, Invalid=573, Unknown=1, NotChecked=0, Total=702 [2022-07-13 02:07:35,351 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 87 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:35,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 107 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 02:07:35,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-07-13 02:07:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 02:07:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-07-13 02:07:35,353 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 40 [2022-07-13 02:07:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:35,354 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-07-13 02:07:35,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 14 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 02:07:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-07-13 02:07:35,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 02:07:35,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:35,355 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:35,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:35,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:35,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash 889808907, now seen corresponding path program 3 times [2022-07-13 02:07:35,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:35,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976966244] [2022-07-13 02:07:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:35,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:35,577 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:35,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63114967] [2022-07-13 02:07:35,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:07:35,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:35,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:35,585 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) [2022-07-13 02:07:35,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:07:35,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 02:07:35,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:35,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 02:07:35,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 02:07:35,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 02:07:36,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976966244] [2022-07-13 02:07:36,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63114967] [2022-07-13 02:07:36,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63114967] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:36,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:07:36,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2022-07-13 02:07:36,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347025874] [2022-07-13 02:07:36,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:36,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 02:07:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 02:07:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:07:36,290 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:07:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:36,443 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2022-07-13 02:07:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 02:07:36,444 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2022-07-13 02:07:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:36,444 INFO L225 Difference]: With dead ends: 33 [2022-07-13 02:07:36,444 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 02:07:36,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2022-07-13 02:07:36,445 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 80 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:36,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 82 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 02:07:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 02:07:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 02:07:36,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2022-07-13 02:07:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:36,446 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 02:07:36,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:07:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 02:07:36,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 02:07:36,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-07-13 02:07:36,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-07-13 02:07:36,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-07-13 02:07:36,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-07-13 02:07:36,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-07-13 02:07:36,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-07-13 02:07:36,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:36,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:36,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 02:07:36,688 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 35) no Hoare annotation was computed. [2022-07-13 02:07:36,688 INFO L895 garLoopResultBuilder]: At program point L31-2(lines 31 35) the Hoare annotation is: (or (not (<= 1 |twoWay_#in~terminate|)) (and (<= 1 twoWay_~terminate) (= (+ 1 twoWay_~m~0) |twoWay_#in~n|) (= twoWay_~n |twoWay_#in~n|) (<= 0 |twoWay_#in~n|)) (not (<= |twoWay_#in~n| 2147483647))) [2022-07-13 02:07:36,688 INFO L899 garLoopResultBuilder]: For program point L27(lines 27 37) no Hoare annotation was computed. [2022-07-13 02:07:36,688 INFO L899 garLoopResultBuilder]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2022-07-13 02:07:36,689 INFO L899 garLoopResultBuilder]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed. [2022-07-13 02:07:36,689 INFO L899 garLoopResultBuilder]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2022-07-13 02:07:36,689 INFO L899 garLoopResultBuilder]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2022-07-13 02:07:36,689 INFO L899 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2022-07-13 02:07:36,689 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-07-13 02:07:36,689 INFO L899 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2022-07-13 02:07:36,689 INFO L899 garLoopResultBuilder]: For program point L36-2(line 36) no Hoare annotation was computed. [2022-07-13 02:07:36,689 INFO L899 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2022-07-13 02:07:36,690 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2022-07-13 02:07:36,690 INFO L899 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2022-07-13 02:07:36,690 INFO L902 garLoopResultBuilder]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true [2022-07-13 02:07:36,690 INFO L899 garLoopResultBuilder]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2022-07-13 02:07:36,690 INFO L899 garLoopResultBuilder]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2022-07-13 02:07:36,690 INFO L899 garLoopResultBuilder]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2022-07-13 02:07:36,690 INFO L899 garLoopResultBuilder]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed. [2022-07-13 02:07:36,690 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 02:07:36,690 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 02:07:36,691 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 02:07:36,691 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 02:07:36,691 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2022-07-13 02:07:36,691 INFO L899 garLoopResultBuilder]: For program point L48-1(line 48) no Hoare annotation was computed. [2022-07-13 02:07:36,691 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 46) no Hoare annotation was computed. [2022-07-13 02:07:36,691 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-07-13 02:07:36,691 INFO L895 garLoopResultBuilder]: At program point L40(lines 40 50) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2022-07-13 02:07:36,693 INFO L356 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2022-07-13 02:07:36,695 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 02:07:36,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:07:36 BoogieIcfgContainer [2022-07-13 02:07:36,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 02:07:36,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 02:07:36,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 02:07:36,707 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 02:07:36,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:07:25" (3/4) ... [2022-07-13 02:07:36,709 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 02:07:36,720 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2022-07-13 02:07:36,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-13 02:07:36,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 02:07:36,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 02:07:36,749 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 02:07:36,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 02:07:36,750 INFO L158 Benchmark]: Toolchain (without parser) took 11381.44ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 68.6MB in the beginning and 123.6MB in the end (delta: -55.0MB). Peak memory consumption was 67.9MB. Max. memory is 16.1GB. [2022-07-13 02:07:36,750 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 75.5MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 26.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 02:07:36,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 129.83ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 79.9MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 02:07:36,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.50ms. Allocated memory is still 102.8MB. Free memory was 79.9MB in the beginning and 78.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 02:07:36,751 INFO L158 Benchmark]: Boogie Preprocessor took 12.21ms. Allocated memory is still 102.8MB. Free memory was 78.4MB in the beginning and 77.4MB in the end (delta: 935.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 02:07:36,751 INFO L158 Benchmark]: RCFGBuilder took 183.48ms. Allocated memory is still 102.8MB. Free memory was 77.4MB in the beginning and 67.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 02:07:36,752 INFO L158 Benchmark]: TraceAbstraction took 10991.69ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 67.4MB in the beginning and 47.5MB in the end (delta: 19.8MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2022-07-13 02:07:36,752 INFO L158 Benchmark]: Witness Printer took 42.47ms. Allocated memory is still 148.9MB. Free memory was 47.5MB in the beginning and 123.6MB in the end (delta: -76.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 02:07:36,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 75.5MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 26.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 129.83ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 79.9MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.50ms. Allocated memory is still 102.8MB. Free memory was 79.9MB in the beginning and 78.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.21ms. Allocated memory is still 102.8MB. Free memory was 78.4MB in the beginning and 77.4MB in the end (delta: 935.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 183.48ms. Allocated memory is still 102.8MB. Free memory was 77.4MB in the beginning and 67.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10991.69ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 67.4MB in the beginning and 47.5MB in the end (delta: 19.8MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Witness Printer took 42.47ms. Allocated memory is still 148.9MB. Free memory was 47.5MB in the beginning and 123.6MB in the end (delta: -76.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 415 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 412 mSDsluCounter, 735 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 79 IncrementalHoareTripleChecker+Unchecked, 594 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 769 IncrementalHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 141 mSDtfsCounter, 769 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=1, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 31 HoareAnnotationTreeSize, 10 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 255 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 327 ConstructedInterpolants, 17 QuantifiedInterpolants, 1456 SizeOfPredicates, 35 NumberOfNonLiveVariables, 593 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 214/317 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2022-07-13 02:07:36,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE