./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7e1ff0e6 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/rec_counter3.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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 02:11:16,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 02:11:16,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 02:11:16,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 02:11:16,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 02:11:16,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 02:11:16,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 02:11:16,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 02:11:16,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 02:11:16,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 02:11:16,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 02:11:16,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 02:11:16,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 02:11:16,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 02:11:16,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 02:11:16,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 02:11:16,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 02:11:16,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 02:11:16,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 02:11:16,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 02:11:16,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 02:11:16,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 02:11:16,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 02:11:16,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 02:11:16,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 02:11:16,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 02:11:16,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 02:11:16,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 02:11:16,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 02:11:16,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 02:11:16,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 02:11:16,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 02:11:16,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 02:11:16,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 02:11:16,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 02:11:16,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 02:11:16,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 02:11:16,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 02:11:16,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 02:11:16,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 02:11:16,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 02:11:16,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 02:11:16,761 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 02:11:16,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 02:11:16,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 02:11:16,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 02:11:16,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 02:11:16,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 02:11:16,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 02:11:16,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 02:11:16,765 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 02:11:16,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 02:11:16,766 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 02:11:16,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 02:11:16,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 02:11:16,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 02:11:16,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 02:11:16,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 02:11:16,767 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 02:11:16,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 02:11:16,767 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 02:11:16,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 02:11:16,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 02:11:16,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 02:11:16,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 02:11:16,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 02:11:16,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 02:11:16,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 02:11:16,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 02:11:16,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 02:11:16,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 02:11:16,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 02:11:16,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 02:11:16,769 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 02:11:16,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 02:11:16,770 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 02:11:16,770 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2023-02-15 02:11:16,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 02:11:17,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 02:11:17,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 02:11:17,039 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 02:11:17,039 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 02:11:17,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-02-15 02:11:18,040 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 02:11:18,159 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 02:11:18,159 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-02-15 02:11:18,165 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06457e96b/85fa276bda0a41d09be44d3398fac048/FLAG439378dda [2023-02-15 02:11:18,175 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06457e96b/85fa276bda0a41d09be44d3398fac048 [2023-02-15 02:11:18,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 02:11:18,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 02:11:18,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 02:11:18,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 02:11:18,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 02:11:18,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d52586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18, skipping insertion in model container [2023-02-15 02:11:18,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 02:11:18,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 02:11:18,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:11:18,277 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 02:11:18,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:11:18,292 INFO L208 MainTranslator]: Completed translation [2023-02-15 02:11:18,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18 WrapperNode [2023-02-15 02:11:18,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 02:11:18,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 02:11:18,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 02:11:18,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 02:11:18,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,310 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2023-02-15 02:11:18,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 02:11:18,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 02:11:18,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 02:11:18,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 02:11:18,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 02:11:18,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 02:11:18,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 02:11:18,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 02:11:18,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (1/1) ... [2023-02-15 02:11:18,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 02:11:18,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:18,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 02:11:18,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 02:11:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-02-15 02:11:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-02-15 02:11:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 02:11:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 02:11:18,427 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 02:11:18,428 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 02:11:18,514 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 02:11:18,518 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 02:11:18,518 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 02:11:18,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:11:18 BoogieIcfgContainer [2023-02-15 02:11:18,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 02:11:18,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 02:11:18,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 02:11:18,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 02:11:18,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:11:18" (1/3) ... [2023-02-15 02:11:18,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c681444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:11:18, skipping insertion in model container [2023-02-15 02:11:18,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:18" (2/3) ... [2023-02-15 02:11:18,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c681444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:11:18, skipping insertion in model container [2023-02-15 02:11:18,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:11:18" (3/3) ... [2023-02-15 02:11:18,525 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2023-02-15 02:11:18,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 02:11:18,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-15 02:11:18,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 02:11:18,614 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f822518, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 02:11:18,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-15 02:11:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 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) [2023-02-15 02:11:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 02:11:18,623 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:18,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:18,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1089293515, now seen corresponding path program 1 times [2023-02-15 02:11:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:18,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037786407] [2023-02-15 02:11:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:18,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037786407] [2023-02-15 02:11:18,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037786407] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:18,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:18,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:11:18,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700976424] [2023-02-15 02:11:18,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:18,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:11:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:11:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:11:18,839 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 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 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-15 02:11:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:18,928 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2023-02-15 02:11:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 02:11:18,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2023-02-15 02:11:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:18,935 INFO L225 Difference]: With dead ends: 67 [2023-02-15 02:11:18,936 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 02:11:18,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 02:11:18,942 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 37 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:18,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 104 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:11:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 02:11:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-02-15 02:11:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 29 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 02:11:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-02-15 02:11:18,973 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2023-02-15 02:11:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:18,973 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-02-15 02:11:18,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-15 02:11:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-02-15 02:11:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 02:11:18,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:18,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:18,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 02:11:18,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:18,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash -591639365, now seen corresponding path program 1 times [2023-02-15 02:11:18,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:18,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212239197] [2023-02-15 02:11:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:18,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:19,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212239197] [2023-02-15 02:11:19,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212239197] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:19,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:19,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:11:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770734149] [2023-02-15 02:11:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:19,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:11:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:19,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:11:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:11:19,013 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-15 02:11:19,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:19,058 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 02:11:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 02:11:19,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2023-02-15 02:11:19,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:19,059 INFO L225 Difference]: With dead ends: 34 [2023-02-15 02:11:19,060 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 02:11:19,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 02:11:19,061 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:19,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:11:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 02:11:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-15 02:11:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 02:11:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-15 02:11:19,075 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2023-02-15 02:11:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:19,075 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-15 02:11:19,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-15 02:11:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-15 02:11:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 02:11:19,076 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:19,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 02:11:19,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1479083013, now seen corresponding path program 1 times [2023-02-15 02:11:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:19,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876529543] [2023-02-15 02:11:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:19,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:19,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:19,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876529543] [2023-02-15 02:11:19,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876529543] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:19,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867489772] [2023-02-15 02:11:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:19,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:19,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:19,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:19,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 02:11:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 02:11:19,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:19,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:19,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867489772] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:19,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:19,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 02:11:19,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616193106] [2023-02-15 02:11:19,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 02:11:19,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 02:11:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 02:11:19,394 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:11:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:19,489 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-15 02:11:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 02:11:19,490 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 02:11:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:19,491 INFO L225 Difference]: With dead ends: 39 [2023-02-15 02:11:19,492 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 02:11:19,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-02-15 02:11:19,495 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 138 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:19,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 72 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:11:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 02:11:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-02-15 02:11:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 02:11:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-15 02:11:19,508 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2023-02-15 02:11:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:19,508 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-15 02:11:19,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:11:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-15 02:11:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 02:11:19,510 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:19,510 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:19,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 02:11:19,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:19,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454171, now seen corresponding path program 1 times [2023-02-15 02:11:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:19,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677485570] [2023-02-15 02:11:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:11:19,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:19,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677485570] [2023-02-15 02:11:19,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677485570] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:19,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:19,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 02:11:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630868570] [2023-02-15 02:11:19,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:19,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 02:11:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 02:11:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 02:11:19,769 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-02-15 02:11:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:19,778 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 02:11:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 02:11:19,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 16 [2023-02-15 02:11:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:19,780 INFO L225 Difference]: With dead ends: 34 [2023-02-15 02:11:19,781 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 02:11:19,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 02:11:19,782 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:19,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:11:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 02:11:19,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-02-15 02:11:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 02:11:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-02-15 02:11:19,802 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-02-15 02:11:19,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:19,803 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-02-15 02:11:19,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-02-15 02:11:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-02-15 02:11:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 02:11:19,804 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:19,804 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:19,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 02:11:19,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:19,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454226, now seen corresponding path program 1 times [2023-02-15 02:11:19,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:19,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857784064] [2023-02-15 02:11:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:19,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:11:19,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:19,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857784064] [2023-02-15 02:11:19,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857784064] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:19,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:19,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 02:11:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856443932] [2023-02-15 02:11:19,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:19,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 02:11:19,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 02:11:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 02:11:19,850 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-02-15 02:11:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:19,855 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-15 02:11:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 02:11:19,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 16 [2023-02-15 02:11:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:19,856 INFO L225 Difference]: With dead ends: 31 [2023-02-15 02:11:19,856 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 02:11:19,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 02:11:19,858 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:19,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:11:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 02:11:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-15 02:11:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 02:11:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-15 02:11:19,862 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2023-02-15 02:11:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:19,862 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-15 02:11:19,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-02-15 02:11:19,862 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-15 02:11:19,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 02:11:19,863 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:19,863 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 02:11:19,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 805406401, now seen corresponding path program 1 times [2023-02-15 02:11:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:19,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464359904] [2023-02-15 02:11:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:11:19,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:19,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464359904] [2023-02-15 02:11:19,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464359904] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:19,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:19,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 02:11:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705956439] [2023-02-15 02:11:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:19,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 02:11:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 02:11:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 02:11:19,894 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-15 02:11:19,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:19,914 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-15 02:11:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 02:11:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 [2023-02-15 02:11:19,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:19,915 INFO L225 Difference]: With dead ends: 44 [2023-02-15 02:11:19,915 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 02:11:19,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:11:19,916 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:19,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:11:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 02:11:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-02-15 02:11:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 02:11:19,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-15 02:11:19,922 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2023-02-15 02:11:19,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:19,922 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-15 02:11:19,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-15 02:11:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-15 02:11:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 02:11:19,923 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:19,923 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:19,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 02:11:19,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash 805408099, now seen corresponding path program 1 times [2023-02-15 02:11:19,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:19,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419126441] [2023-02-15 02:11:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:19,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:11:19,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:19,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419126441] [2023-02-15 02:11:19,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419126441] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:19,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:19,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 02:11:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587757354] [2023-02-15 02:11:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:11:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:11:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:11:19,970 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-15 02:11:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:19,982 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-02-15 02:11:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 02:11:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 [2023-02-15 02:11:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:19,984 INFO L225 Difference]: With dead ends: 60 [2023-02-15 02:11:19,984 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 02:11:19,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:11:19,985 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:19,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:11:19,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 02:11:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-15 02:11:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 02:11:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-15 02:11:19,990 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2023-02-15 02:11:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:19,990 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-15 02:11:19,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-15 02:11:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-15 02:11:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 02:11:19,991 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:19,991 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:19,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 02:11:19,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash 842415392, now seen corresponding path program 1 times [2023-02-15 02:11:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:19,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127544575] [2023-02-15 02:11:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:19,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:20,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 02:11:20,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:20,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127544575] [2023-02-15 02:11:20,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127544575] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586412445] [2023-02-15 02:11:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:20,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:20,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:20,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:20,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 02:11:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:20,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 02:11:20,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 02:11:20,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 02:11:20,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586412445] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:20,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 02:11:20,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-02-15 02:11:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560277367] [2023-02-15 02:11:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 02:11:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 02:11:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-15 02:11:20,263 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 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) [2023-02-15 02:11:20,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:20,315 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-02-15 02:11:20,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 02:11:20,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 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) Word has length 28 [2023-02-15 02:11:20,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:20,316 INFO L225 Difference]: With dead ends: 38 [2023-02-15 02:11:20,316 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 02:11:20,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-02-15 02:11:20,320 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:20,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:11:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 02:11:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 02:11:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 02:11:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-15 02:11:20,335 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2023-02-15 02:11:20,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:20,335 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-15 02:11:20,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 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) [2023-02-15 02:11:20,335 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-15 02:11:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 02:11:20,336 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:20,336 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:20,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:20,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 02:11:20,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash 903079569, now seen corresponding path program 1 times [2023-02-15 02:11:20,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:20,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220237129] [2023-02-15 02:11:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:20,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:20,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 02:11:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:20,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220237129] [2023-02-15 02:11:20,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220237129] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:20,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204496984] [2023-02-15 02:11:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:20,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:20,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:20,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 02:11:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:20,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 02:11:20,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 02:11:20,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 02:11:20,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204496984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:20,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:20,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2023-02-15 02:11:20,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142771407] [2023-02-15 02:11:20,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:20,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 02:11:20,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:20,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 02:11:20,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-15 02:11:20,807 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 02:11:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:20,989 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2023-02-15 02:11:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 02:11:20,989 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2023-02-15 02:11:20,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:20,991 INFO L225 Difference]: With dead ends: 128 [2023-02-15 02:11:20,991 INFO L226 Difference]: Without dead ends: 91 [2023-02-15 02:11:20,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2023-02-15 02:11:20,992 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 73 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:20,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 142 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:11:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-15 02:11:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2023-02-15 02:11:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 02:11:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2023-02-15 02:11:21,000 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 31 [2023-02-15 02:11:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:21,000 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2023-02-15 02:11:21,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 02:11:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2023-02-15 02:11:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-02-15 02:11:21,002 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:21,002 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:21,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:21,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:21,208 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:21,209 INFO L85 PathProgramCache]: Analyzing trace with hash 801873460, now seen corresponding path program 2 times [2023-02-15 02:11:21,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:21,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881931791] [2023-02-15 02:11:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 103 proven. 42 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-02-15 02:11:21,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:21,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881931791] [2023-02-15 02:11:21,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881931791] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:21,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884229841] [2023-02-15 02:11:21,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:11:21,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:21,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:21,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:21,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 02:11:21,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:11:21,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:21,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 02:11:21,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-02-15 02:11:21,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-02-15 02:11:22,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884229841] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:22,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:22,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 23 [2023-02-15 02:11:22,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815653412] [2023-02-15 02:11:22,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:22,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 02:11:22,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:22,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 02:11:22,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-15 02:11:22,379 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 02:11:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:22,511 INFO L93 Difference]: Finished difference Result 143 states and 173 transitions. [2023-02-15 02:11:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 02:11:22,511 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 92 [2023-02-15 02:11:22,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:22,513 INFO L225 Difference]: With dead ends: 143 [2023-02-15 02:11:22,513 INFO L226 Difference]: Without dead ends: 85 [2023-02-15 02:11:22,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 174 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2023-02-15 02:11:22,516 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:22,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 186 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:11:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-15 02:11:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-15 02:11:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 76 states have internal predecessors, (83), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 02:11:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-02-15 02:11:22,532 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 92 [2023-02-15 02:11:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:22,533 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-02-15 02:11:22,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 02:11:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-02-15 02:11:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-15 02:11:22,538 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:22,539 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:22,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 02:11:22,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:22,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1485258322, now seen corresponding path program 3 times [2023-02-15 02:11:22,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:22,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25989041] [2023-02-15 02:11:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:22,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:23,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-02-15 02:11:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:23,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25989041] [2023-02-15 02:11:23,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25989041] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:23,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291490300] [2023-02-15 02:11:23,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:11:23,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:23,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:23,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:23,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 02:11:23,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 02:11:23,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:23,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 02:11:23,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-02-15 02:11:23,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-02-15 02:11:23,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291490300] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:23,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:23,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2023-02-15 02:11:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374718434] [2023-02-15 02:11:23,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:23,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 02:11:23,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:23,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 02:11:23,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2023-02-15 02:11:23,334 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 02:11:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:23,737 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2023-02-15 02:11:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-15 02:11:23,737 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 88 [2023-02-15 02:11:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:23,738 INFO L225 Difference]: With dead ends: 154 [2023-02-15 02:11:23,738 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 02:11:23,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 02:11:23,740 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 117 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:23,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 164 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:11:23,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 02:11:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2023-02-15 02:11:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 117 states have internal predecessors, (130), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 02:11:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2023-02-15 02:11:23,761 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 88 [2023-02-15 02:11:23,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:23,761 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2023-02-15 02:11:23,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 02:11:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2023-02-15 02:11:23,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-15 02:11:23,763 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:23,763 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:23,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:23,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 02:11:23,968 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash 605576977, now seen corresponding path program 4 times [2023-02-15 02:11:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:23,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891239235] [2023-02-15 02:11:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 115 proven. 445 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-02-15 02:11:24,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:24,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891239235] [2023-02-15 02:11:24,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891239235] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:24,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538119060] [2023-02-15 02:11:24,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:11:24,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:24,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:24,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:24,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 02:11:24,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:11:24,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:24,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 02:11:24,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-02-15 02:11:24,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-02-15 02:11:25,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538119060] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:25,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:25,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 19, 19] total 54 [2023-02-15 02:11:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37274311] [2023-02-15 02:11:25,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:25,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-15 02:11:25,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-15 02:11:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2487, Unknown=0, NotChecked=0, Total=2862 [2023-02-15 02:11:25,767 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 41 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 02:11:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:26,313 INFO L93 Difference]: Finished difference Result 743 states and 837 transitions. [2023-02-15 02:11:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-02-15 02:11:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 41 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 123 [2023-02-15 02:11:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:26,316 INFO L225 Difference]: With dead ends: 743 [2023-02-15 02:11:26,316 INFO L226 Difference]: Without dead ends: 473 [2023-02-15 02:11:26,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1880, Invalid=9462, Unknown=0, NotChecked=0, Total=11342 [2023-02-15 02:11:26,320 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 237 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:26,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 291 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:11:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-02-15 02:11:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 241. [2023-02-15 02:11:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 224 states have (on average 1.0803571428571428) internal successors, (242), 224 states have internal predecessors, (242), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 02:11:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 259 transitions. [2023-02-15 02:11:26,335 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 259 transitions. Word has length 123 [2023-02-15 02:11:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:26,335 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 259 transitions. [2023-02-15 02:11:26,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 41 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 02:11:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 259 transitions. [2023-02-15 02:11:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-02-15 02:11:26,338 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:26,338 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:26,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:26,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:26,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash 188720571, now seen corresponding path program 5 times [2023-02-15 02:11:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:26,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125319793] [2023-02-15 02:11:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:26,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1761 proven. 51 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2023-02-15 02:11:27,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:27,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125319793] [2023-02-15 02:11:27,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125319793] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:27,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956184622] [2023-02-15 02:11:27,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:11:27,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:27,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:27,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:27,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 02:11:27,548 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-15 02:11:27,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:27,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 02:11:27,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1323 proven. 88 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2023-02-15 02:11:27,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1341 proven. 70 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2023-02-15 02:11:28,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956184622] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:28,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:28,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2023-02-15 02:11:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559999110] [2023-02-15 02:11:28,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:28,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-15 02:11:28,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-15 02:11:28,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-02-15 02:11:28,660 INFO L87 Difference]: Start difference. First operand 241 states and 259 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 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) [2023-02-15 02:11:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:29,011 INFO L93 Difference]: Finished difference Result 425 states and 464 transitions. [2023-02-15 02:11:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 02:11:29,011 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 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) Word has length 263 [2023-02-15 02:11:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:29,012 INFO L225 Difference]: With dead ends: 425 [2023-02-15 02:11:29,012 INFO L226 Difference]: Without dead ends: 256 [2023-02-15 02:11:29,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 532 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1615, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 02:11:29,014 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 50 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:29,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 241 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:11:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-02-15 02:11:29,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-02-15 02:11:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 239 states have (on average 1.0585774058577406) internal successors, (253), 239 states have internal predecessors, (253), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 02:11:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 270 transitions. [2023-02-15 02:11:29,026 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 270 transitions. Word has length 263 [2023-02-15 02:11:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:29,026 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 270 transitions. [2023-02-15 02:11:29,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 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) [2023-02-15 02:11:29,026 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 270 transitions. [2023-02-15 02:11:29,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-02-15 02:11:29,028 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:29,029 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:29,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:29,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:29,234 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:29,234 INFO L85 PathProgramCache]: Analyzing trace with hash -714526506, now seen corresponding path program 6 times [2023-02-15 02:11:29,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:29,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698726094] [2023-02-15 02:11:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:29,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4439 backedges. 1956 proven. 90 refuted. 0 times theorem prover too weak. 2393 trivial. 0 not checked. [2023-02-15 02:11:30,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:30,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698726094] [2023-02-15 02:11:30,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698726094] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:30,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883865302] [2023-02-15 02:11:30,100 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 02:11:30,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:30,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:30,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:30,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 02:11:30,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-02-15 02:11:30,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:30,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 02:11:30,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4439 backedges. 1413 proven. 120 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2023-02-15 02:11:30,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4439 backedges. 1413 proven. 120 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2023-02-15 02:11:30,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883865302] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:30,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:30,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2023-02-15 02:11:30,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413177133] [2023-02-15 02:11:30,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-15 02:11:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:30,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-15 02:11:30,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2023-02-15 02:11:30,970 INFO L87 Difference]: Start difference. First operand 256 states and 270 transitions. Second operand has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 02:11:32,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:32,294 INFO L93 Difference]: Finished difference Result 766 states and 868 transitions. [2023-02-15 02:11:32,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-15 02:11:32,294 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 284 [2023-02-15 02:11:32,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:32,296 INFO L225 Difference]: With dead ends: 766 [2023-02-15 02:11:32,296 INFO L226 Difference]: Without dead ends: 570 [2023-02-15 02:11:32,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3582 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2023-02-15 02:11:32,300 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 441 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:32,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 320 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:11:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-02-15 02:11:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 298. [2023-02-15 02:11:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 281 states have (on average 1.0640569395017794) internal successors, (299), 281 states have internal predecessors, (299), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 02:11:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 316 transitions. [2023-02-15 02:11:32,320 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 316 transitions. Word has length 284 [2023-02-15 02:11:32,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:32,320 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 316 transitions. [2023-02-15 02:11:32,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 02:11:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 316 transitions. [2023-02-15 02:11:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-02-15 02:11:32,323 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:32,323 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:32,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:32,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 02:11:32,540 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1005785761, now seen corresponding path program 7 times [2023-02-15 02:11:32,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:32,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128708835] [2023-02-15 02:11:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 3720 proven. 138 refuted. 0 times theorem prover too weak. 2878 trivial. 0 not checked. [2023-02-15 02:11:33,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:33,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128708835] [2023-02-15 02:11:33,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128708835] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:33,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056972393] [2023-02-15 02:11:33,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 02:11:33,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:33,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:33,703 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:33,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 02:11:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:33,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 02:11:33,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 3356 proven. 311 refuted. 0 times theorem prover too weak. 3069 trivial. 0 not checked. [2023-02-15 02:11:34,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 3356 proven. 311 refuted. 0 times theorem prover too weak. 3069 trivial. 0 not checked. [2023-02-15 02:11:37,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056972393] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:37,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:37,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2023-02-15 02:11:37,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916518676] [2023-02-15 02:11:37,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:37,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-15 02:11:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-15 02:11:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2023-02-15 02:11:37,878 INFO L87 Difference]: Start difference. First operand 298 states and 316 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-15 02:11:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:39,140 INFO L93 Difference]: Finished difference Result 497 states and 536 transitions. [2023-02-15 02:11:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-02-15 02:11:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 333 [2023-02-15 02:11:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:39,142 INFO L225 Difference]: With dead ends: 497 [2023-02-15 02:11:39,142 INFO L226 Difference]: Without dead ends: 313 [2023-02-15 02:11:39,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 645 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3461 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2023-02-15 02:11:39,145 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:39,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 474 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 02:11:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-02-15 02:11:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-02-15 02:11:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 296 states have (on average 1.054054054054054) internal successors, (312), 296 states have internal predecessors, (312), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 02:11:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 329 transitions. [2023-02-15 02:11:39,164 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 329 transitions. Word has length 333 [2023-02-15 02:11:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:39,165 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 329 transitions. [2023-02-15 02:11:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-15 02:11:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 329 transitions. [2023-02-15 02:11:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-02-15 02:11:39,168 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:39,168 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:39,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:39,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 02:11:39,374 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1028513830, now seen corresponding path program 8 times [2023-02-15 02:11:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:39,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297110224] [2023-02-15 02:11:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4322 proven. 195 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2023-02-15 02:11:40,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:40,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297110224] [2023-02-15 02:11:40,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297110224] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:40,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342918370] [2023-02-15 02:11:40,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:11:40,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:40,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:40,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:40,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 02:11:40,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:11:40,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:40,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 02:11:40,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4381 proven. 499 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-15 02:11:41,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4381 proven. 499 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-15 02:11:45,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342918370] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:45,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:45,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2023-02-15 02:11:45,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991864989] [2023-02-15 02:11:45,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:45,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-15 02:11:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-15 02:11:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2023-02-15 02:11:45,028 INFO L87 Difference]: Start difference. First operand 313 states and 329 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 02:11:46,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:46,283 INFO L93 Difference]: Finished difference Result 497 states and 530 transitions. [2023-02-15 02:11:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-15 02:11:46,284 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 348 [2023-02-15 02:11:46,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:46,285 INFO L225 Difference]: With dead ends: 497 [2023-02-15 02:11:46,285 INFO L226 Difference]: Without dead ends: 325 [2023-02-15 02:11:46,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 667 SyntacticMatches, 36 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5345 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2023-02-15 02:11:46,289 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 86 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:46,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 436 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 02:11:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-02-15 02:11:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2023-02-15 02:11:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 308 states have (on average 1.0454545454545454) internal successors, (322), 308 states have internal predecessors, (322), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 02:11:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 339 transitions. [2023-02-15 02:11:46,308 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 339 transitions. Word has length 348 [2023-02-15 02:11:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:46,308 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 339 transitions. [2023-02-15 02:11:46,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 02:11:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 339 transitions. [2023-02-15 02:11:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-02-15 02:11:46,311 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:46,311 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:46,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:46,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-15 02:11:46,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash -264518770, now seen corresponding path program 9 times [2023-02-15 02:11:46,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:46,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136518889] [2023-02-15 02:11:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:46,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8388 backedges. 4863 proven. 261 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2023-02-15 02:11:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136518889] [2023-02-15 02:11:47,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136518889] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386975078] [2023-02-15 02:11:47,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:11:47,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:47,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:47,881 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:47,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 02:11:48,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-15 02:11:48,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:48,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 02:11:48,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8388 backedges. 1768 proven. 117 refuted. 0 times theorem prover too weak. 6503 trivial. 0 not checked. [2023-02-15 02:11:48,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8388 backedges. 1768 proven. 117 refuted. 0 times theorem prover too weak. 6503 trivial. 0 not checked. [2023-02-15 02:11:49,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386975078] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:49,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:49,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2023-02-15 02:11:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041476094] [2023-02-15 02:11:49,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:49,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-02-15 02:11:49,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-02-15 02:11:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=4528, Unknown=0, NotChecked=0, Total=5256 [2023-02-15 02:11:49,229 INFO L87 Difference]: Start difference. First operand 325 states and 339 transitions. Second operand has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 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) [2023-02-15 02:11:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:50,670 INFO L93 Difference]: Finished difference Result 878 states and 998 transitions. [2023-02-15 02:11:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-02-15 02:11:50,670 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 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) Word has length 350 [2023-02-15 02:11:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:50,680 INFO L225 Difference]: With dead ends: 878 [2023-02-15 02:11:50,680 INFO L226 Difference]: Without dead ends: 693 [2023-02-15 02:11:50,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3164, Invalid=16296, Unknown=0, NotChecked=0, Total=19460 [2023-02-15 02:11:50,684 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 657 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:50,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 591 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 02:11:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-02-15 02:11:50,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 405. [2023-02-15 02:11:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 387 states have (on average 1.0594315245478036) internal successors, (410), 387 states have internal predecessors, (410), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 15 states have call predecessors, (15), 2 states have call successors, (15) [2023-02-15 02:11:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 428 transitions. [2023-02-15 02:11:50,711 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 428 transitions. Word has length 350 [2023-02-15 02:11:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:50,711 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 428 transitions. [2023-02-15 02:11:50,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 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) [2023-02-15 02:11:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 428 transitions. [2023-02-15 02:11:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-02-15 02:11:50,713 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:50,713 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:50,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:50,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 02:11:50,919 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:50,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1263462439, now seen corresponding path program 10 times [2023-02-15 02:11:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:50,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997980371] [2023-02-15 02:11:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:50,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:51,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11543 backedges. 6995 proven. 336 refuted. 0 times theorem prover too weak. 4212 trivial. 0 not checked. [2023-02-15 02:11:52,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:52,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997980371] [2023-02-15 02:11:52,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997980371] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:52,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647411420] [2023-02-15 02:11:52,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:11:52,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:52,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:52,298 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:52,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 02:11:52,585 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:11:52,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:52,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 02:11:52,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11543 backedges. 7605 proven. 1073 refuted. 0 times theorem prover too weak. 2865 trivial. 0 not checked. [2023-02-15 02:11:53,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11543 backedges. 7605 proven. 1073 refuted. 0 times theorem prover too weak. 2865 trivial. 0 not checked. [2023-02-15 02:11:58,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647411420] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:58,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:58,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2023-02-15 02:11:58,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046418727] [2023-02-15 02:11:58,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:58,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-15 02:11:58,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-15 02:11:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 02:11:58,778 INFO L87 Difference]: Start difference. First operand 405 states and 428 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 02:12:01,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:12:01,029 INFO L93 Difference]: Finished difference Result 746 states and 794 transitions. [2023-02-15 02:12:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-02-15 02:12:01,029 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 399 [2023-02-15 02:12:01,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:12:01,031 INFO L225 Difference]: With dead ends: 746 [2023-02-15 02:12:01,031 INFO L226 Difference]: Without dead ends: 496 [2023-02-15 02:12:01,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 753 SyntacticMatches, 46 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11017 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2023-02-15 02:12:01,036 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 113 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 2929 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 02:12:01,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 553 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 02:12:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-02-15 02:12:01,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 452. [2023-02-15 02:12:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 432 states have (on average 1.0532407407407407) internal successors, (455), 432 states have internal predecessors, (455), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2023-02-15 02:12:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 475 transitions. [2023-02-15 02:12:01,068 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 475 transitions. Word has length 399 [2023-02-15 02:12:01,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:12:01,069 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 475 transitions. [2023-02-15 02:12:01,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 02:12:01,069 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 475 transitions. [2023-02-15 02:12:01,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-02-15 02:12:01,071 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:12:01,071 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:12:01,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 02:12:01,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 02:12:01,277 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:12:01,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:12:01,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2103274145, now seen corresponding path program 11 times [2023-02-15 02:12:01,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:12:01,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301147655] [2023-02-15 02:12:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:12:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:12:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:12:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12052 backedges. 6823 proven. 420 refuted. 0 times theorem prover too weak. 4809 trivial. 0 not checked. [2023-02-15 02:12:02,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:12:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301147655] [2023-02-15 02:12:02,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301147655] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:12:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489526897] [2023-02-15 02:12:02,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:12:02,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:12:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:12:02,708 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:12:02,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 02:12:03,134 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-02-15 02:12:03,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:12:03,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 02:12:03,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:12:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12052 backedges. 8269 proven. 1615 refuted. 0 times theorem prover too weak. 2168 trivial. 0 not checked. [2023-02-15 02:12:03,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:12:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12052 backedges. 8455 proven. 1429 refuted. 0 times theorem prover too weak. 2168 trivial. 0 not checked. [2023-02-15 02:12:07,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489526897] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:12:07,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:12:07,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2023-02-15 02:12:07,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453524761] [2023-02-15 02:12:07,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:12:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-02-15 02:12:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:12:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-02-15 02:12:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2023-02-15 02:12:07,716 INFO L87 Difference]: Start difference. First operand 452 states and 475 transitions. Second operand has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 02:12:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:12:10,333 INFO L93 Difference]: Finished difference Result 869 states and 917 transitions. [2023-02-15 02:12:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-02-15 02:12:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 405 [2023-02-15 02:12:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:12:10,335 INFO L225 Difference]: With dead ends: 869 [2023-02-15 02:12:10,335 INFO L226 Difference]: Without dead ends: 610 [2023-02-15 02:12:10,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 767 SyntacticMatches, 43 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12353 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2023-02-15 02:12:10,341 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 134 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 4489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 02:12:10,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 617 Invalid, 4489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 02:12:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-02-15 02:12:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 535. [2023-02-15 02:12:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 512 states have (on average 1.048828125) internal successors, (537), 512 states have internal predecessors, (537), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2023-02-15 02:12:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 560 transitions. [2023-02-15 02:12:10,406 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 560 transitions. Word has length 405 [2023-02-15 02:12:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:12:10,408 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 560 transitions. [2023-02-15 02:12:10,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 02:12:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 560 transitions. [2023-02-15 02:12:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-02-15 02:12:10,410 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:12:10,411 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:12:10,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 02:12:10,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:12:10,617 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:12:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:12:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1830676325, now seen corresponding path program 12 times [2023-02-15 02:12:10,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:12:10,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396088107] [2023-02-15 02:12:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:12:10,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:12:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:12:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:12,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:13,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:13,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 9020 proven. 1914 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2023-02-15 02:12:13,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:12:13,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396088107] [2023-02-15 02:12:13,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396088107] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:12:13,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590124594] [2023-02-15 02:12:13,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 02:12:13,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:12:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:12:13,530 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:12:13,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 02:12:14,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-02-15 02:12:14,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:12:14,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 02:12:14,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:12:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 582 proven. 10201 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2023-02-15 02:12:15,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:12:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 582 proven. 10201 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2023-02-15 02:12:21,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590124594] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:12:21,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:12:21,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2023-02-15 02:12:21,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157710036] [2023-02-15 02:12:21,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:12:21,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-02-15 02:12:21,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:12:21,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-02-15 02:12:21,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2023-02-15 02:12:21,049 INFO L87 Difference]: Start difference. First operand 535 states and 560 transitions. Second operand has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2023-02-15 02:12:35,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:12:35,636 INFO L93 Difference]: Finished difference Result 2119 states and 2300 transitions. [2023-02-15 02:12:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 451 states. [2023-02-15 02:12:35,637 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) Word has length 401 [2023-02-15 02:12:35,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:12:35,651 INFO L225 Difference]: With dead ends: 2119 [2023-02-15 02:12:35,651 INFO L226 Difference]: Without dead ends: 1321 [2023-02-15 02:12:35,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122079 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=37447, Invalid=291455, Unknown=0, NotChecked=0, Total=328902 [2023-02-15 02:12:35,668 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1214 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 02:12:35,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1060 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 02:12:35,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2023-02-15 02:12:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 967. [2023-02-15 02:12:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 933 states have (on average 1.037513397642015) internal successors, (968), 933 states have internal predecessors, (968), 3 states have call successors, (3), 2 states have call predecessors, (3), 30 states have return successors, (31), 31 states have call predecessors, (31), 2 states have call successors, (31) [2023-02-15 02:12:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1002 transitions. [2023-02-15 02:12:35,739 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1002 transitions. Word has length 401 [2023-02-15 02:12:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:12:35,740 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1002 transitions. [2023-02-15 02:12:35,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2023-02-15 02:12:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1002 transitions. [2023-02-15 02:12:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2023-02-15 02:12:35,746 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:12:35,747 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:12:35,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 02:12:35,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:12:35,953 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:12:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:12:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1453723992, now seen corresponding path program 13 times [2023-02-15 02:12:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:12:35,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276399790] [2023-02-15 02:12:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:12:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:12:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:37,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:12:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 23418 proven. 615 refuted. 0 times theorem prover too weak. 47589 trivial. 0 not checked. [2023-02-15 02:12:40,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:12:40,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276399790] [2023-02-15 02:12:40,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276399790] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:12:40,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872906810] [2023-02-15 02:12:40,983 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 02:12:40,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:12:40,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:12:40,992 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:12:40,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 02:12:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:41,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 63 conjunts are in the unsatisfiable core [2023-02-15 02:12:41,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:12:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 40116 proven. 2564 refuted. 0 times theorem prover too weak. 28942 trivial. 0 not checked. [2023-02-15 02:12:42,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:13:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 40116 proven. 2564 refuted. 0 times theorem prover too weak. 28942 trivial. 0 not checked. [2023-02-15 02:13:03,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872906810] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:13:03,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:13:03,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 63, 63] total 86 [2023-02-15 02:13:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495192718] [2023-02-15 02:13:03,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:13:03,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-02-15 02:13:03,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:13:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-02-15 02:13:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=6668, Unknown=0, NotChecked=0, Total=7310 [2023-02-15 02:13:03,223 INFO L87 Difference]: Start difference. First operand 967 states and 1002 transitions. Second operand has 86 states, 86 states have (on average 2.2209302325581395) internal successors, (191), 73 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-02-15 02:13:07,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:13:07,804 INFO L93 Difference]: Finished difference Result 2140 states and 2230 transitions. [2023-02-15 02:13:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2023-02-15 02:13:07,805 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.2209302325581395) internal successors, (191), 73 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 898 [2023-02-15 02:13:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:13:07,820 INFO L225 Difference]: With dead ends: 2140 [2023-02-15 02:13:07,821 INFO L226 Difference]: Without dead ends: 1437 [2023-02-15 02:13:07,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2070 GetRequests, 1748 SyntacticMatches, 61 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26027 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8434, Invalid=60472, Unknown=0, NotChecked=0, Total=68906 [2023-02-15 02:13:07,828 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 146 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 6067 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 6083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:13:07,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 723 Invalid, 6083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 6067 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-15 02:13:07,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2023-02-15 02:13:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1286. [2023-02-15 02:13:07,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1243 states have (on average 1.0345937248592116) internal successors, (1286), 1243 states have internal predecessors, (1286), 3 states have call successors, (3), 2 states have call predecessors, (3), 39 states have return successors, (40), 40 states have call predecessors, (40), 2 states have call successors, (40) [2023-02-15 02:13:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1329 transitions. [2023-02-15 02:13:07,941 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1329 transitions. Word has length 898 [2023-02-15 02:13:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:13:07,941 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1329 transitions. [2023-02-15 02:13:07,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.2209302325581395) internal successors, (191), 73 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-02-15 02:13:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1329 transitions. [2023-02-15 02:13:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2023-02-15 02:13:07,949 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:13:07,949 INFO L195 NwaCegarLoop]: trace histogram [217, 217, 217, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:13:07,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-15 02:13:08,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:13:08,160 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:13:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:13:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1298458637, now seen corresponding path program 14 times [2023-02-15 02:13:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:13:08,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571497881] [2023-02-15 02:13:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:13:08,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:13:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:13:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:11,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 78849 backedges. 25782 proven. 726 refuted. 0 times theorem prover too weak. 52341 trivial. 0 not checked. [2023-02-15 02:13:13,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:13:13,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571497881] [2023-02-15 02:13:13,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571497881] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:13:13,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671080356] [2023-02-15 02:13:13,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:13:13,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:13:13,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:13:13,648 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:13:13,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 02:13:14,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:13:14,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:13:14,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-15 02:13:14,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:13:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 78849 backedges. 47408 proven. 3265 refuted. 0 times theorem prover too weak. 28176 trivial. 0 not checked. [2023-02-15 02:13:15,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:13:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 78849 backedges. 47408 proven. 3265 refuted. 0 times theorem prover too weak. 28176 trivial. 0 not checked. [2023-02-15 02:13:41,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671080356] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:13:41,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:13:41,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2023-02-15 02:13:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355108022] [2023-02-15 02:13:41,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:13:41,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-02-15 02:13:41,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:13:41,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-02-15 02:13:41,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2023-02-15 02:13:41,511 INFO L87 Difference]: Start difference. First operand 1286 states and 1329 transitions. Second operand has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-15 02:13:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:13:46,985 INFO L93 Difference]: Finished difference Result 2498 states and 2588 transitions. [2023-02-15 02:13:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-02-15 02:13:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 931 [2023-02-15 02:13:46,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:13:47,018 INFO L225 Difference]: With dead ends: 2498 [2023-02-15 02:13:47,019 INFO L226 Difference]: Without dead ends: 1741 [2023-02-15 02:13:47,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2168 GetRequests, 1806 SyntacticMatches, 66 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33286 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2023-02-15 02:13:47,030 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 156 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 8142 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 8160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 8142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-15 02:13:47,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 823 Invalid, 8160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 8142 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-15 02:13:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2023-02-15 02:13:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1537. [2023-02-15 02:13:47,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1488 states have (on average 1.032258064516129) internal successors, (1536), 1488 states have internal predecessors, (1536), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2023-02-15 02:13:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1585 transitions. [2023-02-15 02:13:47,187 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1585 transitions. Word has length 931 [2023-02-15 02:13:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:13:47,187 INFO L495 AbstractCegarLoop]: Abstraction has 1537 states and 1585 transitions. [2023-02-15 02:13:47,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-15 02:13:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1585 transitions. [2023-02-15 02:13:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2023-02-15 02:13:47,196 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:13:47,197 INFO L195 NwaCegarLoop]: trace histogram [227, 227, 227, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:13:47,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 02:13:47,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-15 02:13:47,409 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:13:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:13:47,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1615883887, now seen corresponding path program 15 times [2023-02-15 02:13:47,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:13:47,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037452696] [2023-02-15 02:13:47,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:13:47,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:13:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:49,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:13:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 85485 backedges. 28119 proven. 846 refuted. 0 times theorem prover too weak. 56520 trivial. 0 not checked. [2023-02-15 02:13:53,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:13:53,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037452696] [2023-02-15 02:13:53,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037452696] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:13:53,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995689379] [2023-02-15 02:13:53,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:13:53,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:13:53,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:13:53,698 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:13:53,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 02:13:55,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-15 02:13:55,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:13:55,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-15 02:13:55,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:13:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 85485 backedges. 20015 proven. 1023 refuted. 0 times theorem prover too weak. 64447 trivial. 0 not checked. [2023-02-15 02:13:56,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:13:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 85485 backedges. 20015 proven. 1023 refuted. 0 times theorem prover too weak. 64447 trivial. 0 not checked. [2023-02-15 02:13:57,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995689379] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:13:57,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:13:57,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 32, 32] total 119 [2023-02-15 02:13:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052506207] [2023-02-15 02:13:57,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:13:57,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-02-15 02:13:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:13:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-02-15 02:13:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=12444, Unknown=0, NotChecked=0, Total=14042 [2023-02-15 02:13:57,832 INFO L87 Difference]: Start difference. First operand 1537 states and 1585 transitions. Second operand has 119 states, 119 states have (on average 1.781512605042017) internal successors, (212), 116 states have internal predecessors, (212), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 02:14:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:14:04,400 INFO L93 Difference]: Finished difference Result 5531 states and 6126 transitions. [2023-02-15 02:14:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2023-02-15 02:14:04,400 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.781512605042017) internal successors, (212), 116 states have internal predecessors, (212), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 951 [2023-02-15 02:14:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:14:04,440 INFO L225 Difference]: With dead ends: 5531 [2023-02-15 02:14:04,440 INFO L226 Difference]: Without dead ends: 4642 [2023-02-15 02:14:04,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2206 GetRequests, 1890 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28741 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=12911, Invalid=87895, Unknown=0, NotChecked=0, Total=100806 [2023-02-15 02:14:04,453 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 1433 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 3387 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 02:14:04,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 879 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 02:14:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2023-02-15 02:14:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 1932. [2023-02-15 02:14:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1876 states have (on average 1.0399786780383795) internal successors, (1951), 1876 states have internal predecessors, (1951), 3 states have call successors, (3), 2 states have call predecessors, (3), 52 states have return successors, (53), 53 states have call predecessors, (53), 2 states have call successors, (53) [2023-02-15 02:14:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2007 transitions. [2023-02-15 02:14:04,687 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2007 transitions. Word has length 951 [2023-02-15 02:14:04,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:14:04,687 INFO L495 AbstractCegarLoop]: Abstraction has 1932 states and 2007 transitions. [2023-02-15 02:14:04,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.781512605042017) internal successors, (212), 116 states have internal predecessors, (212), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 02:14:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2007 transitions. [2023-02-15 02:14:04,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2023-02-15 02:14:04,697 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:14:04,698 INFO L195 NwaCegarLoop]: trace histogram [257, 257, 257, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:14:04,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-02-15 02:14:04,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:14:04,911 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:14:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:14:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash -149013623, now seen corresponding path program 16 times [2023-02-15 02:14:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:14:04,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511184608] [2023-02-15 02:14:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:14:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:14:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:14:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:12,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 107940 backedges. 50751 proven. 975 refuted. 0 times theorem prover too weak. 56214 trivial. 0 not checked. [2023-02-15 02:14:13,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:14:13,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511184608] [2023-02-15 02:14:13,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511184608] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:14:13,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667152863] [2023-02-15 02:14:13,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:14:13,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:14:13,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:14:13,393 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:14:13,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 02:14:15,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:14:15,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:14:15,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-15 02:14:15,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:14:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 107940 backedges. 70368 proven. 5027 refuted. 0 times theorem prover too weak. 32545 trivial. 0 not checked. [2023-02-15 02:14:16,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:14:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 107940 backedges. 70368 proven. 5027 refuted. 0 times theorem prover too weak. 32545 trivial. 0 not checked. [2023-02-15 02:14:47,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667152863] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:14:47,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:14:47,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 78, 78] total 107 [2023-02-15 02:14:47,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174519218] [2023-02-15 02:14:47,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:14:47,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-02-15 02:14:47,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:14:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-02-15 02:14:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=10385, Unknown=0, NotChecked=0, Total=11342 [2023-02-15 02:14:47,879 INFO L87 Difference]: Start difference. First operand 1932 states and 2007 transitions. Second operand has 107 states, 107 states have (on average 2.177570093457944) internal successors, (233), 91 states have internal predecessors, (233), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2023-02-15 02:14:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:14:59,681 INFO L93 Difference]: Finished difference Result 3554 states and 3696 transitions. [2023-02-15 02:14:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2023-02-15 02:14:59,682 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.177570093457944) internal successors, (233), 91 states have internal predecessors, (233), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) Word has length 1041 [2023-02-15 02:14:59,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:14:59,688 INFO L225 Difference]: With dead ends: 3554 [2023-02-15 02:14:59,688 INFO L226 Difference]: Without dead ends: 2620 [2023-02-15 02:14:59,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2459 GetRequests, 2011 SyntacticMatches, 76 SemanticMatches, 372 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52080 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=16939, Invalid=122563, Unknown=0, NotChecked=0, Total=139502 [2023-02-15 02:14:59,700 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 183 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 10691 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 10713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 10691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:14:59,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1059 Invalid, 10713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 10691 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-15 02:14:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2023-02-15 02:14:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2300. [2023-02-15 02:15:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2236 states have (on average 1.0362254025044724) internal successors, (2317), 2236 states have internal predecessors, (2317), 3 states have call successors, (3), 2 states have call predecessors, (3), 60 states have return successors, (61), 61 states have call predecessors, (61), 2 states have call successors, (61) [2023-02-15 02:15:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 2381 transitions. [2023-02-15 02:15:00,004 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 2381 transitions. Word has length 1041 [2023-02-15 02:15:00,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:15:00,005 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 2381 transitions. [2023-02-15 02:15:00,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.177570093457944) internal successors, (233), 91 states have internal predecessors, (233), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2023-02-15 02:15:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 2381 transitions. [2023-02-15 02:15:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2023-02-15 02:15:00,015 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:15:00,016 INFO L195 NwaCegarLoop]: trace histogram [264, 264, 264, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:15:00,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-15 02:15:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:15:00,231 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:15:00,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:15:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1994014968, now seen corresponding path program 17 times [2023-02-15 02:15:00,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:15:00,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75666725] [2023-02-15 02:15:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:15:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:15:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:15:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:09,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 113568 backedges. 53486 proven. 1113 refuted. 0 times theorem prover too weak. 58969 trivial. 0 not checked. [2023-02-15 02:15:10,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:15:10,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75666725] [2023-02-15 02:15:10,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75666725] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:15:10,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423419275] [2023-02-15 02:15:10,225 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:15:10,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:15:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:15:10,227 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:15:10,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 02:15:12,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2023-02-15 02:15:12,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:15:12,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 76 conjunts are in the unsatisfiable core [2023-02-15 02:15:12,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:15:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 113568 backedges. 77532 proven. 6920 refuted. 0 times theorem prover too weak. 29116 trivial. 0 not checked. [2023-02-15 02:15:13,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:15:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 113568 backedges. 78686 proven. 5766 refuted. 0 times theorem prover too weak. 29116 trivial. 0 not checked. [2023-02-15 02:15:36,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423419275] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:15:36,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:15:36,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 76, 76] total 109 [2023-02-15 02:15:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201041821] [2023-02-15 02:15:36,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:15:36,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-02-15 02:15:36,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:15:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-02-15 02:15:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1097, Invalid=10675, Unknown=0, NotChecked=0, Total=11772 [2023-02-15 02:15:36,988 INFO L87 Difference]: Start difference. First operand 2300 states and 2381 transitions. Second operand has 109 states, 109 states have (on average 2.110091743119266) internal successors, (230), 97 states have internal predecessors, (230), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14)