./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5317dae 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-crafted/NestedRecursion_2c.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 e757bed859e5dfb8bc677e07409ebb4da6a15dd0898403a302646229a6409be5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 04:10:19,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 04:10:19,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 04:10:20,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 04:10:20,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 04:10:20,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 04:10:20,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 04:10:20,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 04:10:20,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 04:10:20,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 04:10:20,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 04:10:20,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 04:10:20,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 04:10:20,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 04:10:20,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 04:10:20,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 04:10:20,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 04:10:20,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 04:10:20,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 04:10:20,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 04:10:20,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 04:10:20,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 04:10:20,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 04:10:20,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 04:10:20,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 04:10:20,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 04:10:20,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 04:10:20,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 04:10:20,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 04:10:20,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 04:10:20,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 04:10:20,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 04:10:20,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 04:10:20,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 04:10:20,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 04:10:20,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 04:10:20,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 04:10:20,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 04:10:20,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 04:10:20,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 04:10:20,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 04:10:20,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-16 04:10:20,077 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 04:10:20,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 04:10:20,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 04:10:20,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 04:10:20,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 04:10:20,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 04:10:20,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 04:10:20,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 04:10:20,082 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 04:10:20,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 04:10:20,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 04:10:20,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 04:10:20,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 04:10:20,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 04:10:20,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 04:10:20,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 04:10:20,084 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-16 04:10:20,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 04:10:20,084 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 04:10:20,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 04:10:20,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 04:10:20,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 04:10:20,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 04:10:20,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 04:10:20,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 04:10:20,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 04:10:20,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 04:10:20,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 04:10:20,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 04:10:20,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 04:10:20,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 04:10:20,086 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 04:10:20,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 04:10:20,086 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 04:10:20,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e757bed859e5dfb8bc677e07409ebb4da6a15dd0898403a302646229a6409be5 [2023-02-16 04:10:20,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 04:10:20,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 04:10:20,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 04:10:20,274 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 04:10:20,275 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 04:10:20,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c [2023-02-16 04:10:21,367 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 04:10:21,522 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 04:10:21,523 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c [2023-02-16 04:10:21,528 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae04f01c4/e6ac782b000f41778fffd06c5f8c54f3/FLAG4607f46af [2023-02-16 04:10:21,541 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae04f01c4/e6ac782b000f41778fffd06c5f8c54f3 [2023-02-16 04:10:21,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 04:10:21,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 04:10:21,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 04:10:21,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 04:10:21,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 04:10:21,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e9225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21, skipping insertion in model container [2023-02-16 04:10:21,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 04:10:21,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 04:10:21,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:10:21,658 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 04:10:21,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:10:21,678 INFO L208 MainTranslator]: Completed translation [2023-02-16 04:10:21,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21 WrapperNode [2023-02-16 04:10:21,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 04:10:21,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 04:10:21,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 04:10:21,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 04:10:21,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,697 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2023-02-16 04:10:21,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 04:10:21,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 04:10:21,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 04:10:21,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 04:10:21,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,711 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 04:10:21,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 04:10:21,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 04:10:21,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 04:10:21,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (1/1) ... [2023-02-16 04:10:21,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 04:10:21,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:21,749 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) [2023-02-16 04:10:21,755 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 [2023-02-16 04:10:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-02-16 04:10:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-02-16 04:10:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 04:10:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 04:10:21,814 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 04:10:21,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 04:10:21,918 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 04:10:21,922 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 04:10:21,922 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 04:10:21,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:10:21 BoogieIcfgContainer [2023-02-16 04:10:21,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 04:10:21,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 04:10:21,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 04:10:21,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 04:10:21,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 04:10:21" (1/3) ... [2023-02-16 04:10:21,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294e4382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:10:21, skipping insertion in model container [2023-02-16 04:10:21,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:10:21" (2/3) ... [2023-02-16 04:10:21,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294e4382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:10:21, skipping insertion in model container [2023-02-16 04:10:21,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:10:21" (3/3) ... [2023-02-16 04:10:21,939 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_2c.c [2023-02-16 04:10:21,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 04:10:21,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-16 04:10:22,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 04:10:22,041 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;@11f398e4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 04:10:22,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-16 04:10:22,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 04:10:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 04:10:22,053 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:22,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:22,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1134721268, now seen corresponding path program 1 times [2023-02-16 04:10:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:22,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555164969] [2023-02-16 04:10:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:22,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:22,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555164969] [2023-02-16 04:10:22,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555164969] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:22,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:22,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 04:10:22,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020985606] [2023-02-16 04:10:22,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:22,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:10:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:22,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:10:22,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 04:10:22,243 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2023-02-16 04:10:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:22,311 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-02-16 04:10:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 04:10:22,313 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 [2023-02-16 04:10:22,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:22,318 INFO L225 Difference]: With dead ends: 45 [2023-02-16 04:10:22,319 INFO L226 Difference]: Without dead ends: 34 [2023-02-16 04:10:22,321 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 [2023-02-16 04:10:22,323 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:22,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 75 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-16 04:10:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-02-16 04:10:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 23 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 04:10:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-02-16 04:10:22,349 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2023-02-16 04:10:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:22,350 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-02-16 04:10:22,350 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) [2023-02-16 04:10:22,350 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-02-16 04:10:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 04:10:22,350 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:22,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:22,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 04:10:22,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash 816620978, now seen corresponding path program 1 times [2023-02-16 04:10:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449009632] [2023-02-16 04:10:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:22,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:22,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449009632] [2023-02-16 04:10:22,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449009632] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:22,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:22,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 04:10:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955072501] [2023-02-16 04:10:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:22,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:10:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:10:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 04:10:22,391 INFO L87 Difference]: Start difference. First operand 29 states and 35 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) [2023-02-16 04:10:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:22,433 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2023-02-16 04:10:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 04:10:22,433 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 [2023-02-16 04:10:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:22,434 INFO L225 Difference]: With dead ends: 47 [2023-02-16 04:10:22,434 INFO L226 Difference]: Without dead ends: 46 [2023-02-16 04:10:22,435 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 [2023-02-16 04:10:22,436 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:22,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 54 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-16 04:10:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2023-02-16 04:10:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 32 states have internal predecessors, (39), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 04:10:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-02-16 04:10:22,445 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 8 [2023-02-16 04:10:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:22,445 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-02-16 04:10:22,445 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) [2023-02-16 04:10:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-02-16 04:10:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 04:10:22,446 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:22,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:22,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 04:10:22,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash 431664181, now seen corresponding path program 1 times [2023-02-16 04:10:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:22,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135052334] [2023-02-16 04:10:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:22,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:22,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135052334] [2023-02-16 04:10:22,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135052334] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:22,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437547138] [2023-02-16 04:10:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:22,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:22,523 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) [2023-02-16 04:10:22,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 04:10:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:22,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 04:10:22,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:22,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:22,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437547138] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:22,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:22,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-16 04:10:22,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095988815] [2023-02-16 04:10:22,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:22,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 04:10:22,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:22,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 04:10:22,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-16 04:10:22,673 INFO L87 Difference]: Start difference. First operand 41 states and 51 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) [2023-02-16 04:10:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:22,813 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2023-02-16 04:10:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 04:10:22,814 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 [2023-02-16 04:10:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:22,815 INFO L225 Difference]: With dead ends: 96 [2023-02-16 04:10:22,815 INFO L226 Difference]: Without dead ends: 95 [2023-02-16 04:10:22,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-02-16 04:10:22,817 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 139 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:22,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 104 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 04:10:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-16 04:10:22,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2023-02-16 04:10:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 59 states have internal predecessors, (75), 13 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 04:10:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2023-02-16 04:10:22,829 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 12 [2023-02-16 04:10:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:22,829 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2023-02-16 04:10:22,830 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) [2023-02-16 04:10:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2023-02-16 04:10:22,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 04:10:22,830 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:22,830 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:22,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 04:10:23,050 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 [2023-02-16 04:10:23,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash 574996991, now seen corresponding path program 1 times [2023-02-16 04:10:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:23,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179831796] [2023-02-16 04:10:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:23,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:23,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:23,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179831796] [2023-02-16 04:10:23,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179831796] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:23,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:23,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 04:10:23,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246655413] [2023-02-16 04:10:23,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:23,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 04:10:23,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 04:10:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 04:10:23,132 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-02-16 04:10:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:23,169 INFO L93 Difference]: Finished difference Result 117 states and 166 transitions. [2023-02-16 04:10:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 04:10:23,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 15 [2023-02-16 04:10:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:23,173 INFO L225 Difference]: With dead ends: 117 [2023-02-16 04:10:23,175 INFO L226 Difference]: Without dead ends: 116 [2023-02-16 04:10:23,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 04:10:23,176 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:23,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-16 04:10:23,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2023-02-16 04:10:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 75 states have internal predecessors, (92), 13 states have call successors, (13), 6 states have call predecessors, (13), 10 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) [2023-02-16 04:10:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2023-02-16 04:10:23,196 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 15 [2023-02-16 04:10:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:23,197 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2023-02-16 04:10:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-02-16 04:10:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2023-02-16 04:10:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 04:10:23,198 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:23,198 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:23,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 04:10:23,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash 645037581, now seen corresponding path program 1 times [2023-02-16 04:10:23,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:23,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268983448] [2023-02-16 04:10:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:23,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:23,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268983448] [2023-02-16 04:10:23,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268983448] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:23,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:23,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 04:10:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866216485] [2023-02-16 04:10:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:23,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 04:10:23,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 04:10:23,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 04:10:23,224 INFO L87 Difference]: Start difference. First operand 99 states and 127 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) [2023-02-16 04:10:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:23,232 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2023-02-16 04:10:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 04:10:23,233 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 [2023-02-16 04:10:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:23,234 INFO L225 Difference]: With dead ends: 99 [2023-02-16 04:10:23,234 INFO L226 Difference]: Without dead ends: 98 [2023-02-16 04:10:23,234 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 [2023-02-16 04:10:23,235 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:23,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:23,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-16 04:10:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-16 04:10:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 74 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 10 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) [2023-02-16 04:10:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2023-02-16 04:10:23,244 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 16 [2023-02-16 04:10:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:23,245 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2023-02-16 04:10:23,245 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) [2023-02-16 04:10:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2023-02-16 04:10:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 04:10:23,246 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:23,246 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:23,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 04:10:23,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1915238450, now seen corresponding path program 1 times [2023-02-16 04:10:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:23,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587928981] [2023-02-16 04:10:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:23,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:23,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587928981] [2023-02-16 04:10:23,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587928981] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:23,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:23,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 04:10:23,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926084644] [2023-02-16 04:10:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:23,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 04:10:23,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:23,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 04:10:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 04:10:23,296 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 04:10:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:23,376 INFO L93 Difference]: Finished difference Result 137 states and 175 transitions. [2023-02-16 04:10:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 04:10:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-02-16 04:10:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:23,378 INFO L225 Difference]: With dead ends: 137 [2023-02-16 04:10:23,378 INFO L226 Difference]: Without dead ends: 136 [2023-02-16 04:10:23,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-16 04:10:23,379 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:23,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 74 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-16 04:10:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2023-02-16 04:10:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 98 states have internal predecessors, (107), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (32), 20 states have call predecessors, (32), 19 states have call successors, (32) [2023-02-16 04:10:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2023-02-16 04:10:23,391 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 20 [2023-02-16 04:10:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:23,392 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2023-02-16 04:10:23,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 04:10:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2023-02-16 04:10:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 04:10:23,392 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:23,393 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-16 04:10:23,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:23,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash 757150232, now seen corresponding path program 1 times [2023-02-16 04:10:23,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:23,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024725983] [2023-02-16 04:10:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:23,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:23,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024725983] [2023-02-16 04:10:23,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024725983] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:23,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:23,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 04:10:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957200679] [2023-02-16 04:10:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:23,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 04:10:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 04:10:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 04:10:23,439 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 04:10:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:23,511 INFO L93 Difference]: Finished difference Result 156 states and 201 transitions. [2023-02-16 04:10:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 04:10:23,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-02-16 04:10:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:23,513 INFO L225 Difference]: With dead ends: 156 [2023-02-16 04:10:23,513 INFO L226 Difference]: Without dead ends: 155 [2023-02-16 04:10:23,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-16 04:10:23,514 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:23,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 73 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-16 04:10:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 144. [2023-02-16 04:10:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 112 states have internal predecessors, (122), 25 states have call successors, (25), 8 states have call predecessors, (25), 13 states have return successors, (37), 23 states have call predecessors, (37), 22 states have call successors, (37) [2023-02-16 04:10:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2023-02-16 04:10:23,542 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 21 [2023-02-16 04:10:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:23,542 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2023-02-16 04:10:23,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 04:10:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2023-02-16 04:10:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 04:10:23,543 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:23,543 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:23,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 04:10:23,543 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1990628763, now seen corresponding path program 2 times [2023-02-16 04:10:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:23,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289531455] [2023-02-16 04:10:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:23,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289531455] [2023-02-16 04:10:23,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289531455] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093537314] [2023-02-16 04:10:23,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 04:10:23,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:23,626 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) [2023-02-16 04:10:23,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 04:10:23,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 04:10:23,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:23,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 04:10:23,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:23,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:23,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093537314] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:23,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:23,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-16 04:10:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574383062] [2023-02-16 04:10:23,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:23,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 04:10:23,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:23,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 04:10:23,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-16 04:10:23,747 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 04:10:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:24,016 INFO L93 Difference]: Finished difference Result 215 states and 277 transitions. [2023-02-16 04:10:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 04:10:24,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-16 04:10:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:24,017 INFO L225 Difference]: With dead ends: 215 [2023-02-16 04:10:24,018 INFO L226 Difference]: Without dead ends: 214 [2023-02-16 04:10:24,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2023-02-16 04:10:24,019 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 134 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:24,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 137 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 04:10:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-02-16 04:10:24,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2023-02-16 04:10:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 142 states have (on average 1.176056338028169) internal successors, (167), 154 states have internal predecessors, (167), 34 states have call successors, (34), 11 states have call predecessors, (34), 19 states have return successors, (52), 32 states have call predecessors, (52), 31 states have call successors, (52) [2023-02-16 04:10:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 253 transitions. [2023-02-16 04:10:24,031 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 253 transitions. Word has length 25 [2023-02-16 04:10:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:24,031 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 253 transitions. [2023-02-16 04:10:24,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 04:10:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 253 transitions. [2023-02-16 04:10:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 04:10:24,032 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:24,032 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-02-16 04:10:24,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 04:10:24,237 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 [2023-02-16 04:10:24,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:24,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -895487436, now seen corresponding path program 2 times [2023-02-16 04:10:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:24,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294243461] [2023-02-16 04:10:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:24,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:24,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294243461] [2023-02-16 04:10:24,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294243461] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:24,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036710433] [2023-02-16 04:10:24,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 04:10:24,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:24,332 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) [2023-02-16 04:10:24,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 04:10:24,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 04:10:24,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:24,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 04:10:24,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:24,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:24,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036710433] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:24,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:24,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-02-16 04:10:24,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116066868] [2023-02-16 04:10:24,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:24,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 04:10:24,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:24,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 04:10:24,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-02-16 04:10:24,517 INFO L87 Difference]: Start difference. First operand 198 states and 253 transitions. Second operand has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:24,907 INFO L93 Difference]: Finished difference Result 319 states and 414 transitions. [2023-02-16 04:10:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-16 04:10:24,908 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-16 04:10:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:24,909 INFO L225 Difference]: With dead ends: 319 [2023-02-16 04:10:24,910 INFO L226 Difference]: Without dead ends: 318 [2023-02-16 04:10:24,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=554, Invalid=1252, Unknown=0, NotChecked=0, Total=1806 [2023-02-16 04:10:24,911 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 312 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:24,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 248 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 04:10:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-02-16 04:10:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 306. [2023-02-16 04:10:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 220 states have (on average 1.1681818181818182) internal successors, (257), 238 states have internal predecessors, (257), 52 states have call successors, (52), 17 states have call predecessors, (52), 31 states have return successors, (82), 50 states have call predecessors, (82), 49 states have call successors, (82) [2023-02-16 04:10:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 391 transitions. [2023-02-16 04:10:24,927 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 391 transitions. Word has length 27 [2023-02-16 04:10:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:24,927 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 391 transitions. [2023-02-16 04:10:24,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 391 transitions. [2023-02-16 04:10:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 04:10:24,929 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:24,929 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:24,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-16 04:10:25,133 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 [2023-02-16 04:10:25,133 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:25,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:25,134 INFO L85 PathProgramCache]: Analyzing trace with hash -126444680, now seen corresponding path program 1 times [2023-02-16 04:10:25,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:25,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702778337] [2023-02-16 04:10:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:25,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 04:10:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 04:10:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:25,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:25,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702778337] [2023-02-16 04:10:25,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702778337] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:25,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:25,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 04:10:25,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637318476] [2023-02-16 04:10:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:25,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:10:25,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:25,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:10:25,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 04:10:25,195 INFO L87 Difference]: Start difference. First operand 306 states and 391 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 04:10:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:25,216 INFO L93 Difference]: Finished difference Result 306 states and 391 transitions. [2023-02-16 04:10:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 04:10:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2023-02-16 04:10:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:25,218 INFO L225 Difference]: With dead ends: 306 [2023-02-16 04:10:25,218 INFO L226 Difference]: Without dead ends: 305 [2023-02-16 04:10:25,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 04:10:25,219 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:25,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-02-16 04:10:25,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-02-16 04:10:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 220 states have (on average 1.0909090909090908) internal successors, (240), 237 states have internal predecessors, (240), 52 states have call successors, (52), 17 states have call predecessors, (52), 31 states have return successors, (82), 50 states have call predecessors, (82), 49 states have call successors, (82) [2023-02-16 04:10:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2023-02-16 04:10:25,243 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 31 [2023-02-16 04:10:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:25,244 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2023-02-16 04:10:25,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 04:10:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2023-02-16 04:10:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 04:10:25,250 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:25,250 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-16 04:10:25,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:25,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:25,251 INFO L85 PathProgramCache]: Analyzing trace with hash 801174005, now seen corresponding path program 1 times [2023-02-16 04:10:25,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:25,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629102055] [2023-02-16 04:10:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:25,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 04:10:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 04:10:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:25,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:25,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629102055] [2023-02-16 04:10:25,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629102055] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:25,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:25,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 04:10:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202426399] [2023-02-16 04:10:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:25,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 04:10:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 04:10:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 04:10:25,341 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 04:10:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:25,415 INFO L93 Difference]: Finished difference Result 325 states and 398 transitions. [2023-02-16 04:10:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 04:10:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-02-16 04:10:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:25,417 INFO L225 Difference]: With dead ends: 325 [2023-02-16 04:10:25,417 INFO L226 Difference]: Without dead ends: 324 [2023-02-16 04:10:25,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-02-16 04:10:25,418 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:25,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 67 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-02-16 04:10:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2023-02-16 04:10:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 232 states have (on average 1.0948275862068966) internal successors, (254), 249 states have internal predecessors, (254), 55 states have call successors, (55), 18 states have call predecessors, (55), 32 states have return successors, (70), 53 states have call predecessors, (70), 52 states have call successors, (70) [2023-02-16 04:10:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 379 transitions. [2023-02-16 04:10:25,430 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 379 transitions. Word has length 36 [2023-02-16 04:10:25,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:25,430 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 379 transitions. [2023-02-16 04:10:25,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 04:10:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 379 transitions. [2023-02-16 04:10:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-16 04:10:25,431 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:25,431 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:25,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-16 04:10:25,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash -933409583, now seen corresponding path program 1 times [2023-02-16 04:10:25,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:25,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242374705] [2023-02-16 04:10:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:25,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 04:10:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 04:10:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:25,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:25,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242374705] [2023-02-16 04:10:25,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242374705] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:25,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:10:25,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 04:10:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747454648] [2023-02-16 04:10:25,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 04:10:25,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 04:10:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 04:10:25,531 INFO L87 Difference]: Start difference. First operand 321 states and 379 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 04:10:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:25,610 INFO L93 Difference]: Finished difference Result 322 states and 379 transitions. [2023-02-16 04:10:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 04:10:25,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2023-02-16 04:10:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:25,614 INFO L225 Difference]: With dead ends: 322 [2023-02-16 04:10:25,614 INFO L226 Difference]: Without dead ends: 321 [2023-02-16 04:10:25,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-02-16 04:10:25,616 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:25,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 62 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-02-16 04:10:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-02-16 04:10:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 232 states have (on average 1.0862068965517242) internal successors, (252), 248 states have internal predecessors, (252), 55 states have call successors, (55), 18 states have call predecessors, (55), 32 states have return successors, (70), 53 states have call predecessors, (70), 52 states have call successors, (70) [2023-02-16 04:10:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 377 transitions. [2023-02-16 04:10:25,630 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 377 transitions. Word has length 37 [2023-02-16 04:10:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:25,631 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 377 transitions. [2023-02-16 04:10:25,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 04:10:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 377 transitions. [2023-02-16 04:10:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-16 04:10:25,633 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:25,633 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 04:10:25,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1029918734, now seen corresponding path program 3 times [2023-02-16 04:10:25,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:25,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204217650] [2023-02-16 04:10:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:25,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:25,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:25,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204217650] [2023-02-16 04:10:25,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204217650] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:25,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750893555] [2023-02-16 04:10:25,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 04:10:25,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:25,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:25,751 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) [2023-02-16 04:10:25,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 04:10:25,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-16 04:10:25,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:25,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 04:10:25,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:25,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:26,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750893555] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:26,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:26,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-16 04:10:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002194292] [2023-02-16 04:10:26,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:26,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 04:10:26,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 04:10:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-02-16 04:10:26,037 INFO L87 Difference]: Start difference. First operand 320 states and 377 transitions. Second operand has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 04:10:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:26,797 INFO L93 Difference]: Finished difference Result 456 states and 580 transitions. [2023-02-16 04:10:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-16 04:10:26,798 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2023-02-16 04:10:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:26,800 INFO L225 Difference]: With dead ends: 456 [2023-02-16 04:10:26,800 INFO L226 Difference]: Without dead ends: 455 [2023-02-16 04:10:26,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=900, Invalid=2406, Unknown=0, NotChecked=0, Total=3306 [2023-02-16 04:10:26,802 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 480 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:26,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 156 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 04:10:26,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-02-16 04:10:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 428. [2023-02-16 04:10:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 310 states have (on average 1.0838709677419356) internal successors, (336), 332 states have internal predecessors, (336), 73 states have call successors, (73), 24 states have call predecessors, (73), 44 states have return successors, (94), 71 states have call predecessors, (94), 70 states have call successors, (94) [2023-02-16 04:10:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 503 transitions. [2023-02-16 04:10:26,824 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 503 transitions. Word has length 40 [2023-02-16 04:10:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:26,824 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 503 transitions. [2023-02-16 04:10:26,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 04:10:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 503 transitions. [2023-02-16 04:10:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-16 04:10:26,825 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:26,825 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:26,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 04:10:27,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:27,031 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1938510892, now seen corresponding path program 2 times [2023-02-16 04:10:27,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:27,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034748641] [2023-02-16 04:10:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:27,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 04:10:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 04:10:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:27,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:27,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034748641] [2023-02-16 04:10:27,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034748641] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:27,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182354103] [2023-02-16 04:10:27,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 04:10:27,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:27,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:27,090 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) [2023-02-16 04:10:27,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 04:10:27,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:27,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 04:10:27,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 04:10:27,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:27,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:27,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182354103] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:27,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:27,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-16 04:10:27,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805313096] [2023-02-16 04:10:27,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:27,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 04:10:27,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 04:10:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-02-16 04:10:27,253 INFO L87 Difference]: Start difference. First operand 428 states and 503 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 04:10:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:27,533 INFO L93 Difference]: Finished difference Result 483 states and 569 transitions. [2023-02-16 04:10:27,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-16 04:10:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2023-02-16 04:10:27,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:27,535 INFO L225 Difference]: With dead ends: 483 [2023-02-16 04:10:27,535 INFO L226 Difference]: Without dead ends: 482 [2023-02-16 04:10:27,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2023-02-16 04:10:27,536 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:27,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 81 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 04:10:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-02-16 04:10:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2023-02-16 04:10:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 349 states have (on average 1.0830945558739256) internal successors, (378), 374 states have internal predecessors, (378), 82 states have call successors, (82), 27 states have call predecessors, (82), 50 states have return successors, (106), 80 states have call predecessors, (106), 79 states have call successors, (106) [2023-02-16 04:10:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 566 transitions. [2023-02-16 04:10:27,568 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 566 transitions. Word has length 41 [2023-02-16 04:10:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:27,568 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 566 transitions. [2023-02-16 04:10:27,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 04:10:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 566 transitions. [2023-02-16 04:10:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-16 04:10:27,569 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:27,570 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-02-16 04:10:27,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 04:10:27,774 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,SelfDestructingSolverStorable13 [2023-02-16 04:10:27,775 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:27,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash -130937836, now seen corresponding path program 3 times [2023-02-16 04:10:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:27,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966999540] [2023-02-16 04:10:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:27,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:28,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:28,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966999540] [2023-02-16 04:10:28,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966999540] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:28,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708115793] [2023-02-16 04:10:28,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 04:10:28,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:28,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:28,008 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) [2023-02-16 04:10:28,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 04:10:28,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-16 04:10:28,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:28,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-16 04:10:28,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:28,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:28,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708115793] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:28,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:28,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-02-16 04:10:28,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416906781] [2023-02-16 04:10:28,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:28,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-16 04:10:28,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:28,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-16 04:10:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2023-02-16 04:10:28,526 INFO L87 Difference]: Start difference. First operand 482 states and 566 transitions. Second operand has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:29,463 INFO L93 Difference]: Finished difference Result 703 states and 908 transitions. [2023-02-16 04:10:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-02-16 04:10:29,464 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-02-16 04:10:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:29,466 INFO L225 Difference]: With dead ends: 703 [2023-02-16 04:10:29,466 INFO L226 Difference]: Without dead ends: 702 [2023-02-16 04:10:29,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2534, Invalid=5656, Unknown=0, NotChecked=0, Total=8190 [2023-02-16 04:10:29,471 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 960 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:29,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 345 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 04:10:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-02-16 04:10:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 698. [2023-02-16 04:10:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 505 states have (on average 1.0811881188118813) internal successors, (546), 542 states have internal predecessors, (546), 118 states have call successors, (118), 39 states have call predecessors, (118), 74 states have return successors, (154), 116 states have call predecessors, (154), 115 states have call successors, (154) [2023-02-16 04:10:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 818 transitions. [2023-02-16 04:10:29,514 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 818 transitions. Word has length 57 [2023-02-16 04:10:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:29,514 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 818 transitions. [2023-02-16 04:10:29,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 818 transitions. [2023-02-16 04:10:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-16 04:10:29,516 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:29,516 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:29,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-16 04:10:29,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-16 04:10:29,721 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:29,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:29,721 INFO L85 PathProgramCache]: Analyzing trace with hash -731848523, now seen corresponding path program 3 times [2023-02-16 04:10:29,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:29,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792743629] [2023-02-16 04:10:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:29,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:29,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 04:10:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 04:10:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:29,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:29,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792743629] [2023-02-16 04:10:29,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792743629] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:29,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192475224] [2023-02-16 04:10:29,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 04:10:29,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:29,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:29,854 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) [2023-02-16 04:10:29,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 04:10:29,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-16 04:10:29,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:29,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 04:10:29,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:29,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:30,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192475224] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:30,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:30,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-16 04:10:30,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389068498] [2023-02-16 04:10:30,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:30,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 04:10:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 04:10:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2023-02-16 04:10:30,101 INFO L87 Difference]: Start difference. First operand 698 states and 818 transitions. Second operand has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 04:10:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:30,898 INFO L93 Difference]: Finished difference Result 807 states and 950 transitions. [2023-02-16 04:10:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-16 04:10:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2023-02-16 04:10:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:30,901 INFO L225 Difference]: With dead ends: 807 [2023-02-16 04:10:30,901 INFO L226 Difference]: Without dead ends: 806 [2023-02-16 04:10:30,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1544, Invalid=4936, Unknown=0, NotChecked=0, Total=6480 [2023-02-16 04:10:30,903 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 399 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:30,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 108 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 04:10:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-02-16 04:10:30,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 410. [2023-02-16 04:10:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 307 states have (on average 1.1140065146579805) internal successors, (342), 308 states have internal predecessors, (342), 69 states have call successors, (69), 34 states have call predecessors, (69), 33 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-02-16 04:10:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 478 transitions. [2023-02-16 04:10:30,920 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 478 transitions. Word has length 56 [2023-02-16 04:10:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:30,920 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 478 transitions. [2023-02-16 04:10:30,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 04:10:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 478 transitions. [2023-02-16 04:10:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-16 04:10:30,921 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:30,922 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:30,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-16 04:10:31,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:31,126 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash -760270738, now seen corresponding path program 4 times [2023-02-16 04:10:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:31,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514550041] [2023-02-16 04:10:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:31,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 75 proven. 255 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:10:31,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:31,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514550041] [2023-02-16 04:10:31,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514550041] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:31,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590717315] [2023-02-16 04:10:31,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 04:10:31,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:31,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:31,401 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) [2023-02-16 04:10:31,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 04:10:31,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 04:10:31,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:31,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 04:10:31,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-02-16 04:10:31,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 04:10:31,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590717315] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:31,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 04:10:31,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 30 [2023-02-16 04:10:31,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63726533] [2023-02-16 04:10:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:31,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 04:10:31,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 04:10:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2023-02-16 04:10:31,483 INFO L87 Difference]: Start difference. First operand 410 states and 478 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 04:10:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:31,546 INFO L93 Difference]: Finished difference Result 940 states and 1197 transitions. [2023-02-16 04:10:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 04:10:31,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-02-16 04:10:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:31,549 INFO L225 Difference]: With dead ends: 940 [2023-02-16 04:10:31,549 INFO L226 Difference]: Without dead ends: 643 [2023-02-16 04:10:31,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2023-02-16 04:10:31,551 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:31,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 60 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:31,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-02-16 04:10:31,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 608. [2023-02-16 04:10:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 440 states have (on average 1.0772727272727274) internal successors, (474), 472 states have internal predecessors, (474), 102 states have call successors, (102), 35 states have call predecessors, (102), 65 states have return successors, (133), 100 states have call predecessors, (133), 100 states have call successors, (133) [2023-02-16 04:10:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 709 transitions. [2023-02-16 04:10:31,575 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 709 transitions. Word has length 70 [2023-02-16 04:10:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:31,575 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 709 transitions. [2023-02-16 04:10:31,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 04:10:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 709 transitions. [2023-02-16 04:10:31,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-16 04:10:31,577 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:31,578 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:31,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 04:10:31,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-16 04:10:31,783 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:31,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1701536469, now seen corresponding path program 4 times [2023-02-16 04:10:31,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:31,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507751544] [2023-02-16 04:10:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:31,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:32,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:32,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 04:10:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 04:10:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:32,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:32,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507751544] [2023-02-16 04:10:32,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507751544] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:32,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453507486] [2023-02-16 04:10:32,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 04:10:32,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:32,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:32,089 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) [2023-02-16 04:10:32,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 04:10:32,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 04:10:32,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:32,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-16 04:10:32,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:32,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:32,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453507486] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:32,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:32,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2023-02-16 04:10:32,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284660824] [2023-02-16 04:10:32,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:32,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-16 04:10:32,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-16 04:10:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2023-02-16 04:10:32,730 INFO L87 Difference]: Start difference. First operand 608 states and 709 transitions. Second operand has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 04:10:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:34,751 INFO L93 Difference]: Finished difference Result 825 states and 973 transitions. [2023-02-16 04:10:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-16 04:10:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 86 [2023-02-16 04:10:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:34,755 INFO L225 Difference]: With dead ends: 825 [2023-02-16 04:10:34,755 INFO L226 Difference]: Without dead ends: 824 [2023-02-16 04:10:34,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7926 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=6524, Invalid=20536, Unknown=0, NotChecked=0, Total=27060 [2023-02-16 04:10:34,762 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 850 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:34,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 153 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 04:10:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-02-16 04:10:34,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2023-02-16 04:10:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 596 states have (on average 1.0771812080536913) internal successors, (642), 640 states have internal predecessors, (642), 138 states have call successors, (138), 47 states have call predecessors, (138), 89 states have return successors, (181), 136 states have call predecessors, (181), 136 states have call successors, (181) [2023-02-16 04:10:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 961 transitions. [2023-02-16 04:10:34,812 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 961 transitions. Word has length 86 [2023-02-16 04:10:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:34,813 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 961 transitions. [2023-02-16 04:10:34,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 04:10:34,813 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 961 transitions. [2023-02-16 04:10:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-02-16 04:10:34,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:34,815 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1] [2023-02-16 04:10:34,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 04:10:35,020 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,SelfDestructingSolverStorable17 [2023-02-16 04:10:35,020 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2074912724, now seen corresponding path program 4 times [2023-02-16 04:10:35,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:35,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056402935] [2023-02-16 04:10:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:35,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:35,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:35,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056402935] [2023-02-16 04:10:35,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056402935] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:35,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677283598] [2023-02-16 04:10:35,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 04:10:35,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:35,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:35,910 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) [2023-02-16 04:10:35,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 04:10:35,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 04:10:35,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:35,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-16 04:10:35,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:36,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:37,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677283598] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:37,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:37,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2023-02-16 04:10:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206527181] [2023-02-16 04:10:37,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:37,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-16 04:10:37,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-16 04:10:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2023-02-16 04:10:37,583 INFO L87 Difference]: Start difference. First operand 824 states and 961 transitions. Second operand has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:40,528 INFO L93 Difference]: Finished difference Result 1259 states and 1559 transitions. [2023-02-16 04:10:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-02-16 04:10:40,528 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-02-16 04:10:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:40,533 INFO L225 Difference]: With dead ends: 1259 [2023-02-16 04:10:40,533 INFO L226 Difference]: Without dead ends: 1258 [2023-02-16 04:10:40,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8243 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=10631, Invalid=23779, Unknown=0, NotChecked=0, Total=34410 [2023-02-16 04:10:40,537 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 2168 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 1211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1211 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:40,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 808 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1211 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-16 04:10:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2023-02-16 04:10:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1256. [2023-02-16 04:10:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 908 states have (on average 1.077092511013216) internal successors, (978), 976 states have internal predecessors, (978), 210 states have call successors, (210), 71 states have call predecessors, (210), 137 states have return successors, (277), 208 states have call predecessors, (277), 208 states have call successors, (277) [2023-02-16 04:10:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1465 transitions. [2023-02-16 04:10:40,586 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1465 transitions. Word has length 117 [2023-02-16 04:10:40,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:40,586 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 1465 transitions. [2023-02-16 04:10:40,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:40,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1465 transitions. [2023-02-16 04:10:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-02-16 04:10:40,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:40,589 INFO L195 NwaCegarLoop]: trace histogram [27, 25, 24, 24, 24, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:10:40,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 04:10:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:40,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1006567189, now seen corresponding path program 5 times [2023-02-16 04:10:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:40,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978195813] [2023-02-16 04:10:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:40,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-16 04:10:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:41,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 04:10:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 04:10:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 326 proven. 1221 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 04:10:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:41,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978195813] [2023-02-16 04:10:41,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978195813] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:41,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900178327] [2023-02-16 04:10:41,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 04:10:41,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:41,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:41,718 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) [2023-02-16 04:10:41,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 04:10:41,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-02-16 04:10:41,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:41,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 04:10:41,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2023-02-16 04:10:41,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 04:10:41,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900178327] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:10:41,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 04:10:41,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [50] total 56 [2023-02-16 04:10:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48460136] [2023-02-16 04:10:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:10:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 04:10:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 04:10:41,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=664, Invalid=2416, Unknown=0, NotChecked=0, Total=3080 [2023-02-16 04:10:41,896 INFO L87 Difference]: Start difference. First operand 1256 states and 1465 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 04:10:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:41,979 INFO L93 Difference]: Finished difference Result 1591 states and 1891 transitions. [2023-02-16 04:10:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 04:10:41,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 146 [2023-02-16 04:10:41,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:41,981 INFO L225 Difference]: With dead ends: 1591 [2023-02-16 04:10:41,981 INFO L226 Difference]: Without dead ends: 240 [2023-02-16 04:10:41,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=802, Invalid=2738, Unknown=0, NotChecked=0, Total=3540 [2023-02-16 04:10:41,984 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:41,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 64 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:10:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-16 04:10:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2023-02-16 04:10:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2023-02-16 04:10:41,991 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 146 [2023-02-16 04:10:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:41,992 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2023-02-16 04:10:41,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 04:10:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2023-02-16 04:10:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-02-16 04:10:41,993 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:41,993 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1, 1, 1] [2023-02-16 04:10:41,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 04:10:42,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:42,197 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:42,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1774419796, now seen corresponding path program 5 times [2023-02-16 04:10:42,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:42,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212192279] [2023-02-16 04:10:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:10:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:10:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212192279] [2023-02-16 04:10:45,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212192279] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:10:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967048962] [2023-02-16 04:10:45,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 04:10:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:10:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:10:45,203 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) [2023-02-16 04:10:45,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 04:10:45,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-02-16 04:10:45,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:10:45,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-16 04:10:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:10:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:45,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:10:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:10:49,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967048962] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:10:49,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:10:49,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2023-02-16 04:10:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012833288] [2023-02-16 04:10:49,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:10:49,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-02-16 04:10:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:10:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-02-16 04:10:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2023-02-16 04:10:49,862 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:54,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:10:54,448 INFO L93 Difference]: Finished difference Result 481 states and 528 transitions. [2023-02-16 04:10:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-16 04:10:54,448 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-02-16 04:10:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:10:54,451 INFO L225 Difference]: With dead ends: 481 [2023-02-16 04:10:54,452 INFO L226 Difference]: Without dead ends: 480 [2023-02-16 04:10:54,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17484 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=22613, Invalid=58897, Unknown=0, NotChecked=0, Total=81510 [2023-02-16 04:10:54,458 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1457 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 04:10:54,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 74 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 04:10:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-02-16 04:10:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 478. [2023-02-16 04:10:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 382 states have (on average 1.0026178010471205) internal successors, (383), 382 states have internal predecessors, (383), 95 states have call successors, (95), 95 states have call predecessors, (95), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2023-02-16 04:10:54,475 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 237 [2023-02-16 04:10:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:10:54,477 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2023-02-16 04:10:54,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:10:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2023-02-16 04:10:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-02-16 04:10:54,483 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:10:54,484 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1, 1, 1] [2023-02-16 04:10:54,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 04:10:54,689 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,SelfDestructingSolverStorable20 [2023-02-16 04:10:54,689 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:10:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:10:54,690 INFO L85 PathProgramCache]: Analyzing trace with hash 750235220, now seen corresponding path program 6 times [2023-02-16 04:10:54,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:10:54,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378170724] [2023-02-16 04:10:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:10:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:10:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:11:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:11:05,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:11:05,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378170724] [2023-02-16 04:11:05,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378170724] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:11:05,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881660636] [2023-02-16 04:11:05,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 04:11:05,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:11:05,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:11:05,592 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) [2023-02-16 04:11:05,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 04:11:05,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-02-16 04:11:05,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:11:05,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 192 conjunts are in the unsatisfiable core [2023-02-16 04:11:05,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:11:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:11:06,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:11:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:11:23,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881660636] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:11:23,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:11:23,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2023-02-16 04:11:23,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686917067] [2023-02-16 04:11:23,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:11:23,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-02-16 04:11:23,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:11:23,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-02-16 04:11:23,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36676, Invalid=110396, Unknown=0, NotChecked=0, Total=147072 [2023-02-16 04:11:23,932 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:11:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:11:50,593 INFO L93 Difference]: Finished difference Result 961 states and 1056 transitions. [2023-02-16 04:11:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-02-16 04:11:50,596 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 477 [2023-02-16 04:11:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:11:50,599 INFO L225 Difference]: With dead ends: 961 [2023-02-16 04:11:50,599 INFO L226 Difference]: Without dead ends: 960 [2023-02-16 04:11:50,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 761 SyntacticMatches, 1 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71820 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=91301, Invalid=237601, Unknown=0, NotChecked=0, Total=328902 [2023-02-16 04:11:50,620 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3601 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 04:11:50,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3601 Valid, 65 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 04:11:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-02-16 04:11:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 958. [2023-02-16 04:11:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 766 states have (on average 1.0013054830287207) internal successors, (767), 766 states have internal predecessors, (767), 191 states have call successors, (191), 191 states have call predecessors, (191), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:11:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 958 transitions. [2023-02-16 04:11:50,647 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 958 transitions. Word has length 477 [2023-02-16 04:11:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:11:50,648 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 958 transitions. [2023-02-16 04:11:50,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:11:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 958 transitions. [2023-02-16 04:11:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2023-02-16 04:11:50,665 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:11:50,665 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1, 1, 1] [2023-02-16 04:11:50,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-16 04:11:50,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-16 04:11:50,870 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:11:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:11:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1606028372, now seen corresponding path program 7 times [2023-02-16 04:11:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:11:50,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814945166] [2023-02-16 04:11:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:11:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:11:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:12:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:12:45,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:12:45,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814945166] [2023-02-16 04:12:45,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814945166] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:12:45,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912195977] [2023-02-16 04:12:45,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 04:12:45,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:12:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:12:45,877 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) [2023-02-16 04:12:45,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 04:12:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:12:46,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 384 conjunts are in the unsatisfiable core [2023-02-16 04:12:46,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:12:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:12:46,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:13:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:13:46,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912195977] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:13:46,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:13:46,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2023-02-16 04:13:46,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675384251] [2023-02-16 04:13:46,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:13:46,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2023-02-16 04:13:46,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:13:46,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2023-02-16 04:13:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147076, Invalid=441980, Unknown=0, NotChecked=0, Total=589056 [2023-02-16 04:13:46,475 INFO L87 Difference]: Start difference. First operand 958 states and 958 transitions. Second operand has 768 states, 765 states have (on average 2.0) internal successors, (1530), 386 states have internal predecessors, (1530), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)