./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 574ddb4e 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/recursive/MultCommutative-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:07:12,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:07:12,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:07:12,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:07:12,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:07:12,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:07:12,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:07:12,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:07:12,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:07:12,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:07:12,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:07:12,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:07:12,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:07:12,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:07:12,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:07:12,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:07:12,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:07:12,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:07:12,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:07:12,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:07:12,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:07:12,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:07:12,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:07:12,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:07:12,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:07:12,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:07:12,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:07:12,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:07:12,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:07:12,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:07:12,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:07:12,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:07:12,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:07:12,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:07:12,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:07:12,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:07:12,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:07:12,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:07:12,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:07:12,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:07:12,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:07:12,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-17 09:07:12,751 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:07:12,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:07:12,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:07:12,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:07:12,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:07:12,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:07:12,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:07:12,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:07:12,753 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:07:12,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:07:12,754 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 09:07:12,754 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:07:12,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:07:12,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 09:07:12,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:07:12,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:07:12,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:07:12,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:07:12,755 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:07:12,755 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 09:07:12,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:07:12,755 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:07:12,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:07:12,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:07:12,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:07:12,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:07:12,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:07:12,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:07:12,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:07:12,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:07:12,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:07:12,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:07:12,758 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:07:12,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:07:12,758 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:07:12,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:07:12,758 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:07:12,758 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-02-17 09:07:12,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:07:12,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:07:12,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:07:12,951 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:07:12,952 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:07:12,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-17 09:07:13,884 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:07:14,022 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:07:14,023 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-17 09:07:14,027 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ebbc864/ffd8a77db0054f69800f1c02c2a06243/FLAG8ff0d6557 [2023-02-17 09:07:14,037 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ebbc864/ffd8a77db0054f69800f1c02c2a06243 [2023-02-17 09:07:14,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:07:14,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:07:14,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:07:14,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:07:14,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:07:14,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab234ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14, skipping insertion in model container [2023-02-17 09:07:14,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:07:14,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:07:14,173 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2023-02-17 09:07:14,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:07:14,186 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:07:14,197 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2023-02-17 09:07:14,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:07:14,205 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:07:14,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14 WrapperNode [2023-02-17 09:07:14,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:07:14,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:07:14,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:07:14,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:07:14,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,224 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-17 09:07:14,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:07:14,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:07:14,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:07:14,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:07:14,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:07:14,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:07:14,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:07:14,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:07:14,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (1/1) ... [2023-02-17 09:07:14,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:07:14,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:14,274 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) [2023-02-17 09:07:14,277 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 [2023-02-17 09:07:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 09:07:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-17 09:07:14,299 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-17 09:07:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:07:14,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:07:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 09:07:14,344 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:07:14,346 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:07:14,513 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:07:14,518 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:07:14,528 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 09:07:14,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:07:14 BoogieIcfgContainer [2023-02-17 09:07:14,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:07:14,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:07:14,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:07:14,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:07:14,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:07:14" (1/3) ... [2023-02-17 09:07:14,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e11316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:07:14, skipping insertion in model container [2023-02-17 09:07:14,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:07:14" (2/3) ... [2023-02-17 09:07:14,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e11316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:07:14, skipping insertion in model container [2023-02-17 09:07:14,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:07:14" (3/3) ... [2023-02-17 09:07:14,536 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-02-17 09:07:14,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:07:14,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-17 09:07:14,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:07:14,610 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;@cacb733, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:07:14,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-17 09:07:14,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 09:07:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 09:07:14,618 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:14,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:14,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2023-02-17 09:07:14,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:14,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998056247] [2023-02-17 09:07:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:14,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:14,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:14,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998056247] [2023-02-17 09:07:14,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998056247] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:07:14,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:07:14,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 09:07:14,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685817128] [2023-02-17 09:07:14,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:07:14,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:07:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:07:14,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:07:14,865 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2023-02-17 09:07:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:14,940 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2023-02-17 09:07:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:07:14,945 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 [2023-02-17 09:07:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:14,951 INFO L225 Difference]: With dead ends: 81 [2023-02-17 09:07:14,951 INFO L226 Difference]: Without dead ends: 43 [2023-02-17 09:07:14,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:07:14,955 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:14,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 87 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:07:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-17 09:07:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-02-17 09:07:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 09:07:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-02-17 09:07:14,981 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2023-02-17 09:07:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:14,981 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-02-17 09:07:14,981 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) [2023-02-17 09:07:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-02-17 09:07:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:07:14,984 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:14,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:14,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:07:14,984 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:14,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash 995288596, now seen corresponding path program 1 times [2023-02-17 09:07:14,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:14,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544440371] [2023-02-17 09:07:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:15,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:15,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544440371] [2023-02-17 09:07:15,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544440371] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:07:15,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:07:15,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:07:15,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410030468] [2023-02-17 09:07:15,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:07:15,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:07:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:07:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:07:15,062 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:15,172 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2023-02-17 09:07:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:07:15,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 09:07:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:15,186 INFO L225 Difference]: With dead ends: 59 [2023-02-17 09:07:15,186 INFO L226 Difference]: Without dead ends: 57 [2023-02-17 09:07:15,186 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 [2023-02-17 09:07:15,187 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:15,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:07:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-17 09:07:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-02-17 09:07:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 09:07:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-02-17 09:07:15,195 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 10 [2023-02-17 09:07:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:15,195 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-02-17 09:07:15,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-02-17 09:07:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 09:07:15,208 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:15,209 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:15,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:07:15,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1452689498, now seen corresponding path program 1 times [2023-02-17 09:07:15,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:15,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205329397] [2023-02-17 09:07:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:15,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:15,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:15,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205329397] [2023-02-17 09:07:15,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205329397] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:07:15,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:07:15,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:07:15,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586459224] [2023-02-17 09:07:15,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:07:15,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:07:15,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:15,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:07:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:07:15,270 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:15,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:15,336 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-02-17 09:07:15,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:07:15,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 09:07:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:15,340 INFO L225 Difference]: With dead ends: 77 [2023-02-17 09:07:15,340 INFO L226 Difference]: Without dead ends: 76 [2023-02-17 09:07:15,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:07:15,342 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:15,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 57 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:07:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-17 09:07:15,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-02-17 09:07:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-17 09:07:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-02-17 09:07:15,352 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 15 [2023-02-17 09:07:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:15,352 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-02-17 09:07:15,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-02-17 09:07:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 09:07:15,353 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:15,354 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:15,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 09:07:15,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1005455158, now seen corresponding path program 1 times [2023-02-17 09:07:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:15,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312514265] [2023-02-17 09:07:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:15,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:15,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:15,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312514265] [2023-02-17 09:07:15,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312514265] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:07:15,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:07:15,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:07:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969789332] [2023-02-17 09:07:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:07:15,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:07:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:15,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:07:15,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:07:15,435 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 09:07:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:15,474 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2023-02-17 09:07:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:07:15,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 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 [2023-02-17 09:07:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:15,476 INFO L225 Difference]: With dead ends: 121 [2023-02-17 09:07:15,476 INFO L226 Difference]: Without dead ends: 85 [2023-02-17 09:07:15,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:07:15,478 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:15,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:07:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-17 09:07:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2023-02-17 09:07:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-17 09:07:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2023-02-17 09:07:15,487 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 16 [2023-02-17 09:07:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:15,487 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2023-02-17 09:07:15,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 09:07:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2023-02-17 09:07:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 09:07:15,488 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:15,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:15,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 09:07:15,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1104121313, now seen corresponding path program 1 times [2023-02-17 09:07:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:15,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962099429] [2023-02-17 09:07:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:15,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:15,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:15,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962099429] [2023-02-17 09:07:15,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962099429] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:07:15,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:07:15,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:07:15,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294566663] [2023-02-17 09:07:15,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:07:15,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:07:15,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:07:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:07:15,523 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 09:07:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:15,565 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-02-17 09:07:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:07:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-17 09:07:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:15,567 INFO L225 Difference]: With dead ends: 102 [2023-02-17 09:07:15,567 INFO L226 Difference]: Without dead ends: 101 [2023-02-17 09:07:15,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:07:15,568 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:15,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:07:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-17 09:07:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-02-17 09:07:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 09:07:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2023-02-17 09:07:15,577 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 17 [2023-02-17 09:07:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:15,577 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2023-02-17 09:07:15,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 09:07:15,578 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2023-02-17 09:07:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 09:07:15,578 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:15,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:15,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 09:07:15,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2023-02-17 09:07:15,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:15,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562374263] [2023-02-17 09:07:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:15,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 09:07:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:15,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562374263] [2023-02-17 09:07:15,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562374263] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:15,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674860645] [2023-02-17 09:07:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:15,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:15,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:15,665 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) [2023-02-17 09:07:15,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 09:07:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:15,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 09:07:15,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:15,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:15,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674860645] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:15,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:15,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-17 09:07:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572804807] [2023-02-17 09:07:15,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:15,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 09:07:15,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:15,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 09:07:15,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-17 09:07:15,756 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 09:07:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:15,819 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-02-17 09:07:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 09:07:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-17 09:07:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:15,820 INFO L225 Difference]: With dead ends: 152 [2023-02-17 09:07:15,820 INFO L226 Difference]: Without dead ends: 151 [2023-02-17 09:07:15,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:07:15,822 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:15,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 134 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:07:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-17 09:07:15,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2023-02-17 09:07:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-17 09:07:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-02-17 09:07:15,832 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 18 [2023-02-17 09:07:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:15,832 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-02-17 09:07:15,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 09:07:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-02-17 09:07:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 09:07:15,833 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:15,833 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:15,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:16,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-17 09:07:16,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash 922018386, now seen corresponding path program 1 times [2023-02-17 09:07:16,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:16,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714318585] [2023-02-17 09:07:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:16,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 09:07:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714318585] [2023-02-17 09:07:16,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714318585] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:07:16,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:07:16,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 09:07:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908900148] [2023-02-17 09:07:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:07:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:07:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:07:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:07:16,090 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:16,117 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2023-02-17 09:07:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 09:07:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-17 09:07:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:16,119 INFO L225 Difference]: With dead ends: 163 [2023-02-17 09:07:16,119 INFO L226 Difference]: Without dead ends: 59 [2023-02-17 09:07:16,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:07:16,124 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:16,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:07:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-17 09:07:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-17 09:07:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 09:07:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-17 09:07:16,136 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 20 [2023-02-17 09:07:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:16,137 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-17 09:07:16,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-17 09:07:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 09:07:16,139 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:16,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:16,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 09:07:16,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2023-02-17 09:07:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:16,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498567347] [2023-02-17 09:07:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 09:07:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:16,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:16,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498567347] [2023-02-17 09:07:16,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498567347] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:16,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141579114] [2023-02-17 09:07:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:16,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:16,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:16,230 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) [2023-02-17 09:07:16,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 09:07:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:16,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:07:16,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:16,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:16,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141579114] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:16,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:16,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-02-17 09:07:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769861781] [2023-02-17 09:07:16,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:16,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 09:07:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 09:07:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:07:16,343 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 09:07:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:16,397 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-02-17 09:07:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 09:07:16,397 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-02-17 09:07:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:16,398 INFO L225 Difference]: With dead ends: 65 [2023-02-17 09:07:16,398 INFO L226 Difference]: Without dead ends: 64 [2023-02-17 09:07:16,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-02-17 09:07:16,401 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 113 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 [2023-02-17 09:07:16,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 113 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:07:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-17 09:07:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-02-17 09:07:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-17 09:07:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-02-17 09:07:16,414 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 19 [2023-02-17 09:07:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:16,414 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-02-17 09:07:16,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 09:07:16,414 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-02-17 09:07:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 09:07:16,416 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:16,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:16,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:16,623 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 [2023-02-17 09:07:16,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2023-02-17 09:07:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:16,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639881078] [2023-02-17 09:07:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:16,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:16,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-17 09:07:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 09:07:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:16,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639881078] [2023-02-17 09:07:16,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639881078] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:16,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947635032] [2023-02-17 09:07:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:16,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:16,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:16,696 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) [2023-02-17 09:07:16,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 09:07:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:16,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 09:07:16,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 09:07:16,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 09:07:16,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947635032] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:16,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:16,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-17 09:07:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190044002] [2023-02-17 09:07:16,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:16,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 09:07:16,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:16,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 09:07:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-17 09:07:16,776 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 09:07:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:16,820 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-02-17 09:07:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 09:07:16,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-17 09:07:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:16,821 INFO L225 Difference]: With dead ends: 71 [2023-02-17 09:07:16,821 INFO L226 Difference]: Without dead ends: 70 [2023-02-17 09:07:16,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:07:16,822 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 29 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:16,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 110 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:07:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-17 09:07:16,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2023-02-17 09:07:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.127659574468085) internal successors, (53), 46 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-17 09:07:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-02-17 09:07:16,825 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 25 [2023-02-17 09:07:16,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:16,825 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-02-17 09:07:16,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 09:07:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-02-17 09:07:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 09:07:16,826 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:16,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:16,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:17,030 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 [2023-02-17 09:07:17,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2023-02-17 09:07:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:17,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487411195] [2023-02-17 09:07:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:17,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-17 09:07:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:07:17,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:17,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487411195] [2023-02-17 09:07:17,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487411195] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:17,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742342620] [2023-02-17 09:07:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:17,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:17,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:17,124 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) [2023-02-17 09:07:17,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 09:07:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:17,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 09:07:17,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:07:17,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:07:17,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742342620] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:17,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:17,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-02-17 09:07:17,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703624156] [2023-02-17 09:07:17,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:17,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 09:07:17,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 09:07:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:07:17,228 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 09:07:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:17,324 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2023-02-17 09:07:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 09:07:17,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-02-17 09:07:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:17,326 INFO L225 Difference]: With dead ends: 93 [2023-02-17 09:07:17,326 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 09:07:17,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-17 09:07:17,327 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:17,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 88 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:07:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 09:07:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-02-17 09:07:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-17 09:07:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-17 09:07:17,335 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 26 [2023-02-17 09:07:17,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:17,335 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-17 09:07:17,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 09:07:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-17 09:07:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 09:07:17,336 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:17,336 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:17,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:17,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:17,541 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:17,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1713074993, now seen corresponding path program 1 times [2023-02-17 09:07:17,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:17,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13287817] [2023-02-17 09:07:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:17,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:17,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 09:07:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:07:17,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13287817] [2023-02-17 09:07:17,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13287817] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:17,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079133027] [2023-02-17 09:07:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:17,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:17,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:17,627 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) [2023-02-17 09:07:17,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 09:07:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:17,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 09:07:17,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:07:17,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:07:17,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079133027] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:17,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:17,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-17 09:07:17,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099626799] [2023-02-17 09:07:17,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:17,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 09:07:17,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:17,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 09:07:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-17 09:07:17,782 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 09:07:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:17,904 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2023-02-17 09:07:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 09:07:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2023-02-17 09:07:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:17,906 INFO L225 Difference]: With dead ends: 91 [2023-02-17 09:07:17,906 INFO L226 Difference]: Without dead ends: 90 [2023-02-17 09:07:17,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-02-17 09:07:17,907 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 122 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:17,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 112 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:07:17,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-17 09:07:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2023-02-17 09:07:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-17 09:07:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2023-02-17 09:07:17,912 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 30 [2023-02-17 09:07:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:17,913 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2023-02-17 09:07:17,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 09:07:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2023-02-17 09:07:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 09:07:17,916 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:17,917 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:17,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:18,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-17 09:07:18,123 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1774219858, now seen corresponding path program 1 times [2023-02-17 09:07:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285696511] [2023-02-17 09:07:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:18,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-17 09:07:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 09:07:18,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:18,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285696511] [2023-02-17 09:07:18,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285696511] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:18,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146112800] [2023-02-17 09:07:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:18,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:18,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:18,240 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) [2023-02-17 09:07:18,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 09:07:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 09:07:18,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 09:07:18,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 09:07:18,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146112800] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:18,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:18,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2023-02-17 09:07:18,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152951012] [2023-02-17 09:07:18,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:18,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 09:07:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:18,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 09:07:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-02-17 09:07:18,379 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-17 09:07:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:18,575 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2023-02-17 09:07:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 09:07:18,576 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 37 [2023-02-17 09:07:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:18,577 INFO L225 Difference]: With dead ends: 136 [2023-02-17 09:07:18,577 INFO L226 Difference]: Without dead ends: 129 [2023-02-17 09:07:18,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 09:07:18,578 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 131 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:18,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 101 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:07:18,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-17 09:07:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 73. [2023-02-17 09:07:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-17 09:07:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2023-02-17 09:07:18,582 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 37 [2023-02-17 09:07:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:18,582 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2023-02-17 09:07:18,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-17 09:07:18,582 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2023-02-17 09:07:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-17 09:07:18,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:18,583 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:18,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:18,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:18,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1887054187, now seen corresponding path program 2 times [2023-02-17 09:07:18,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:18,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180409952] [2023-02-17 09:07:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:18,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 09:07:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-17 09:07:18,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:18,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180409952] [2023-02-17 09:07:18,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180409952] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:18,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835588847] [2023-02-17 09:07:18,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:07:18,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:18,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:18,998 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) [2023-02-17 09:07:19,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 09:07:19,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:07:19,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:07:19,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 09:07:19,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-17 09:07:19,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 10 proven. 99 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-17 09:07:19,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835588847] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:19,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:19,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2023-02-17 09:07:19,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579731705] [2023-02-17 09:07:19,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:19,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-17 09:07:19,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-17 09:07:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-02-17 09:07:19,319 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-02-17 09:07:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:19,671 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2023-02-17 09:07:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-17 09:07:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 64 [2023-02-17 09:07:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:19,673 INFO L225 Difference]: With dead ends: 145 [2023-02-17 09:07:19,673 INFO L226 Difference]: Without dead ends: 144 [2023-02-17 09:07:19,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 111 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 09:07:19,675 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 227 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:19,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 176 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 09:07:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-17 09:07:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2023-02-17 09:07:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2023-02-17 09:07:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2023-02-17 09:07:19,678 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 64 [2023-02-17 09:07:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:19,679 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2023-02-17 09:07:19,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-02-17 09:07:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2023-02-17 09:07:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-17 09:07:19,679 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:19,679 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:19,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-17 09:07:19,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:19,882 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:19,883 INFO L85 PathProgramCache]: Analyzing trace with hash 650575638, now seen corresponding path program 2 times [2023-02-17 09:07:19,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:19,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891672449] [2023-02-17 09:07:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-17 09:07:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 09:07:19,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891672449] [2023-02-17 09:07:19,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891672449] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107472055] [2023-02-17 09:07:19,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:07:19,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:19,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:19,974 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) [2023-02-17 09:07:19,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 09:07:20,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:07:20,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:07:20,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 09:07:20,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 09:07:20,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 09:07:20,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107472055] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:20,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:20,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-17 09:07:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174933269] [2023-02-17 09:07:20,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:20,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 09:07:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 09:07:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-17 09:07:20,123 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-17 09:07:20,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:20,262 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-02-17 09:07:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 09:07:20,262 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 48 [2023-02-17 09:07:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:20,263 INFO L225 Difference]: With dead ends: 116 [2023-02-17 09:07:20,263 INFO L226 Difference]: Without dead ends: 109 [2023-02-17 09:07:20,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 86 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2023-02-17 09:07:20,264 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 96 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:20,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 178 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:07:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-17 09:07:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-02-17 09:07:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2023-02-17 09:07:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2023-02-17 09:07:20,268 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 48 [2023-02-17 09:07:20,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:20,268 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2023-02-17 09:07:20,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-17 09:07:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-02-17 09:07:20,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-17 09:07:20,269 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:20,269 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:20,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:20,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-17 09:07:20,475 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1989693396, now seen corresponding path program 3 times [2023-02-17 09:07:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:20,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835585184] [2023-02-17 09:07:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:20,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-17 09:07:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:20,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 58 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-17 09:07:20,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:20,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835585184] [2023-02-17 09:07:20,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835585184] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:20,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461945039] [2023-02-17 09:07:20,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:07:20,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:20,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:20,717 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) [2023-02-17 09:07:20,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 09:07:20,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-17 09:07:20,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:07:20,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 09:07:20,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 58 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-17 09:07:20,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 68 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-17 09:07:21,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461945039] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:21,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:21,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2023-02-17 09:07:21,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985548256] [2023-02-17 09:07:21,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:21,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-17 09:07:21,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-17 09:07:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-02-17 09:07:21,022 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 29 states have internal predecessors, (91), 9 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) [2023-02-17 09:07:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:21,358 INFO L93 Difference]: Finished difference Result 152 states and 171 transitions. [2023-02-17 09:07:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-17 09:07:21,358 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 29 states have internal predecessors, (91), 9 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) Word has length 70 [2023-02-17 09:07:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:21,359 INFO L225 Difference]: With dead ends: 152 [2023-02-17 09:07:21,359 INFO L226 Difference]: Without dead ends: 139 [2023-02-17 09:07:21,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 11 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=2024, Unknown=0, NotChecked=0, Total=2450 [2023-02-17 09:07:21,360 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 110 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:21,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 240 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 09:07:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-02-17 09:07:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 123. [2023-02-17 09:07:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2023-02-17 09:07:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2023-02-17 09:07:21,364 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 70 [2023-02-17 09:07:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:21,364 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2023-02-17 09:07:21,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 29 states have internal predecessors, (91), 9 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) [2023-02-17 09:07:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2023-02-17 09:07:21,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-02-17 09:07:21,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:21,365 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:21,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-17 09:07:21,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-17 09:07:21,570 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash -916650905, now seen corresponding path program 3 times [2023-02-17 09:07:21,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:21,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274900306] [2023-02-17 09:07:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 09:07:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:22,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:22,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:22,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:22,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-17 09:07:22,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:22,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274900306] [2023-02-17 09:07:22,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274900306] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:22,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982419090] [2023-02-17 09:07:22,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:07:22,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:22,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:22,295 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) [2023-02-17 09:07:22,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 09:07:22,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-17 09:07:22,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:07:22,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 09:07:22,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-17 09:07:22,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 30 proven. 289 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-17 09:07:23,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982419090] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:23,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:23,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 50 [2023-02-17 09:07:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233104677] [2023-02-17 09:07:23,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:23,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-17 09:07:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-17 09:07:23,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2023-02-17 09:07:23,263 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-02-17 09:07:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:24,297 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2023-02-17 09:07:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-17 09:07:24,298 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2023-02-17 09:07:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:24,299 INFO L225 Difference]: With dead ends: 237 [2023-02-17 09:07:24,299 INFO L226 Difference]: Without dead ends: 236 [2023-02-17 09:07:24,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 183 SyntacticMatches, 23 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2327 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1122, Invalid=6888, Unknown=0, NotChecked=0, Total=8010 [2023-02-17 09:07:24,301 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 304 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:24,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 389 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 09:07:24,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-17 09:07:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 163. [2023-02-17 09:07:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (42), 28 states have call predecessors, (42), 5 states have call successors, (42) [2023-02-17 09:07:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 184 transitions. [2023-02-17 09:07:24,307 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 184 transitions. Word has length 108 [2023-02-17 09:07:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:24,307 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 184 transitions. [2023-02-17 09:07:24,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-02-17 09:07:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 184 transitions. [2023-02-17 09:07:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-17 09:07:24,308 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:24,308 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 10, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:24,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:24,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-17 09:07:24,513 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:24,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1138144878, now seen corresponding path program 4 times [2023-02-17 09:07:24,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:24,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589587564] [2023-02-17 09:07:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:24,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-17 09:07:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:25,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 132 proven. 289 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-02-17 09:07:25,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:25,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589587564] [2023-02-17 09:07:25,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589587564] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933657116] [2023-02-17 09:07:25,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:07:25,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:25,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:25,264 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) [2023-02-17 09:07:25,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 09:07:25,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:07:25,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:07:25,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-17 09:07:25,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-17 09:07:25,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 36 proven. 423 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-02-17 09:07:26,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933657116] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:26,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:26,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 26] total 59 [2023-02-17 09:07:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552669106] [2023-02-17 09:07:26,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-02-17 09:07:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-02-17 09:07:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3182, Unknown=0, NotChecked=0, Total=3540 [2023-02-17 09:07:26,493 INFO L87 Difference]: Start difference. First operand 163 states and 184 transitions. Second operand has 60 states, 59 states have (on average 2.7796610169491527) internal successors, (164), 57 states have internal predecessors, (164), 13 states have call successors, (18), 4 states have call predecessors, (18), 19 states have return successors, (30), 30 states have call predecessors, (30), 11 states have call successors, (30) [2023-02-17 09:07:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:28,784 INFO L93 Difference]: Finished difference Result 387 states and 439 transitions. [2023-02-17 09:07:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-02-17 09:07:28,784 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.7796610169491527) internal successors, (164), 57 states have internal predecessors, (164), 13 states have call successors, (18), 4 states have call predecessors, (18), 19 states have return successors, (30), 30 states have call predecessors, (30), 11 states have call successors, (30) Word has length 126 [2023-02-17 09:07:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:28,786 INFO L225 Difference]: With dead ends: 387 [2023-02-17 09:07:28,786 INFO L226 Difference]: Without dead ends: 338 [2023-02-17 09:07:28,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 215 SyntacticMatches, 25 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6397 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2800, Invalid=19252, Unknown=0, NotChecked=0, Total=22052 [2023-02-17 09:07:28,790 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 581 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:28,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 377 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 09:07:28,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-02-17 09:07:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 203. [2023-02-17 09:07:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 163 states have (on average 1.030674846625767) internal successors, (168), 162 states have internal predecessors, (168), 6 states have call successors, (6), 4 states have call predecessors, (6), 33 states have return successors, (50), 36 states have call predecessors, (50), 5 states have call successors, (50) [2023-02-17 09:07:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 224 transitions. [2023-02-17 09:07:28,797 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 224 transitions. Word has length 126 [2023-02-17 09:07:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:28,798 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 224 transitions. [2023-02-17 09:07:28,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.7796610169491527) internal successors, (164), 57 states have internal predecessors, (164), 13 states have call successors, (18), 4 states have call predecessors, (18), 19 states have return successors, (30), 30 states have call predecessors, (30), 11 states have call successors, (30) [2023-02-17 09:07:28,798 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 224 transitions. [2023-02-17 09:07:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-02-17 09:07:28,799 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:28,799 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:28,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:29,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-17 09:07:29,004 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:29,005 INFO L85 PathProgramCache]: Analyzing trace with hash 536186049, now seen corresponding path program 4 times [2023-02-17 09:07:29,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:29,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458181698] [2023-02-17 09:07:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:29,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 09:07:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:30,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:30,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 723 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-02-17 09:07:31,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:31,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458181698] [2023-02-17 09:07:31,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458181698] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:31,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946469424] [2023-02-17 09:07:31,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:07:31,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:31,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:31,937 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) [2023-02-17 09:07:31,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 09:07:32,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:07:32,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:07:32,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-17 09:07:32,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 723 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-02-17 09:07:32,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 70 proven. 723 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-02-17 09:07:35,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946469424] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:35,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:35,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2023-02-17 09:07:35,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820459575] [2023-02-17 09:07:35,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:35,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-02-17 09:07:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-02-17 09:07:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2023-02-17 09:07:35,846 INFO L87 Difference]: Start difference. First operand 203 states and 224 transitions. Second operand has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-02-17 09:07:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:38,869 INFO L93 Difference]: Finished difference Result 437 states and 505 transitions. [2023-02-17 09:07:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-17 09:07:38,869 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) Word has length 184 [2023-02-17 09:07:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:38,873 INFO L225 Difference]: With dead ends: 437 [2023-02-17 09:07:38,873 INFO L226 Difference]: Without dead ends: 436 [2023-02-17 09:07:38,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 301 SyntacticMatches, 45 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9155 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3378, Invalid=25352, Unknown=0, NotChecked=0, Total=28730 [2023-02-17 09:07:38,879 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 802 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:38,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 672 Invalid, 3131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-17 09:07:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-02-17 09:07:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 283. [2023-02-17 09:07:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 227 states have (on average 1.0220264317180616) internal successors, (232), 226 states have internal predecessors, (232), 6 states have call successors, (6), 4 states have call predecessors, (6), 49 states have return successors, (82), 52 states have call predecessors, (82), 5 states have call successors, (82) [2023-02-17 09:07:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 320 transitions. [2023-02-17 09:07:38,887 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 320 transitions. Word has length 184 [2023-02-17 09:07:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:38,887 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 320 transitions. [2023-02-17 09:07:38,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-02-17 09:07:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 320 transitions. [2023-02-17 09:07:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-02-17 09:07:38,889 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:38,889 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 17, 17, 17, 17, 17, 17, 17, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:38,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:39,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-17 09:07:39,096 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:39,096 INFO L85 PathProgramCache]: Analyzing trace with hash -24529848, now seen corresponding path program 5 times [2023-02-17 09:07:39,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:39,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359023603] [2023-02-17 09:07:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:07:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-17 09:07:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:40,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:40,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:41,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 226 proven. 723 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2023-02-17 09:07:42,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:07:42,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359023603] [2023-02-17 09:07:42,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359023603] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:07:42,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146678975] [2023-02-17 09:07:42,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 09:07:42,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:07:42,019 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) [2023-02-17 09:07:42,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 09:07:42,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-02-17 09:07:42,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:07:42,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-17 09:07:42,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 226 proven. 723 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2023-02-17 09:07:43,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 296 proven. 723 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-02-17 09:07:46,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146678975] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:46,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:46,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2023-02-17 09:07:46,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587526162] [2023-02-17 09:07:46,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:46,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-02-17 09:07:46,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-02-17 09:07:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2023-02-17 09:07:46,186 INFO L87 Difference]: Start difference. First operand 283 states and 320 transitions. Second operand has 91 states, 90 states have (on average 2.477777777777778) internal successors, (223), 89 states have internal predecessors, (223), 9 states have call successors, (11), 3 states have call predecessors, (11), 32 states have return successors, (51), 51 states have call predecessors, (51), 9 states have call successors, (51) [2023-02-17 09:07:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:49,320 INFO L93 Difference]: Finished difference Result 488 states and 555 transitions. [2023-02-17 09:07:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-17 09:07:49,321 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.477777777777778) internal successors, (223), 89 states have internal predecessors, (223), 9 states have call successors, (11), 3 states have call predecessors, (11), 32 states have return successors, (51), 51 states have call predecessors, (51), 9 states have call successors, (51) Word has length 202 [2023-02-17 09:07:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:49,322 INFO L225 Difference]: With dead ends: 488 [2023-02-17 09:07:49,322 INFO L226 Difference]: Without dead ends: 439 [2023-02-17 09:07:49,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 339 SyntacticMatches, 47 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9139 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3378, Invalid=25352, Unknown=0, NotChecked=0, Total=28730 [2023-02-17 09:07:49,327 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 563 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 3549 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 3727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 3549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:49,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 937 Invalid, 3727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 3549 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-17 09:07:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-02-17 09:07:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 363. [2023-02-17 09:07:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 291 states have (on average 1.0171821305841924) internal successors, (296), 290 states have internal predecessors, (296), 6 states have call successors, (6), 4 states have call predecessors, (6), 65 states have return successors, (98), 68 states have call predecessors, (98), 5 states have call successors, (98) [2023-02-17 09:07:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 400 transitions. [2023-02-17 09:07:49,334 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 400 transitions. Word has length 202 [2023-02-17 09:07:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:49,335 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 400 transitions. [2023-02-17 09:07:49,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.477777777777778) internal successors, (223), 89 states have internal predecessors, (223), 9 states have call successors, (11), 3 states have call predecessors, (11), 32 states have return successors, (51), 51 states have call predecessors, (51), 9 states have call successors, (51) [2023-02-17 09:07:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 400 transitions. [2023-02-17 09:07:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-02-17 09:07:49,338 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:49,338 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:07:49,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-17 09:07:49,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:49,545 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:07:49,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:49,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1623483983, now seen corresponding path program 5 times [2023-02-17 09:07:49,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:49,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872597409] [2023-02-17 09:07:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 09:07:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:07:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:07:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:00,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:03,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:05,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:05,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5948 backedges. 0 proven. 3109 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2023-02-17 09:08:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:08:06,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872597409] [2023-02-17 09:08:06,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872597409] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:08:06,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593843661] [2023-02-17 09:08:06,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 09:08:06,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:08:06,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:08:06,782 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) [2023-02-17 09:08:06,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 09:08:07,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2023-02-17 09:08:07,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:08:07,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 134 conjunts are in the unsatisfiable core [2023-02-17 09:08:07,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:08:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5948 backedges. 0 proven. 3109 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2023-02-17 09:08:09,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:08:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5948 backedges. 150 proven. 3109 refuted. 0 times theorem prover too weak. 2689 trivial. 0 not checked. [2023-02-17 09:08:37,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593843661] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:08:37,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:08:37,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 70] total 170 [2023-02-17 09:08:37,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639730616] [2023-02-17 09:08:37,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:08:37,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2023-02-17 09:08:37,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:08:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2023-02-17 09:08:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3118, Invalid=25952, Unknown=0, NotChecked=0, Total=29070 [2023-02-17 09:08:37,183 INFO L87 Difference]: Start difference. First operand 363 states and 400 transitions. Second operand has 171 states, 170 states have (on average 2.2941176470588234) internal successors, (390), 169 states have internal predecessors, (390), 8 states have call successors, (10), 3 states have call predecessors, (10), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) [2023-02-17 09:08:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:08:47,947 INFO L93 Difference]: Finished difference Result 837 states and 969 transitions. [2023-02-17 09:08:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-02-17 09:08:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 170 states have (on average 2.2941176470588234) internal successors, (390), 169 states have internal predecessors, (390), 8 states have call successors, (10), 3 states have call predecessors, (10), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) Word has length 372 [2023-02-17 09:08:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:08:47,951 INFO L225 Difference]: With dead ends: 837 [2023-02-17 09:08:47,951 INFO L226 Difference]: Without dead ends: 836 [2023-02-17 09:08:47,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 615 SyntacticMatches, 95 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37331 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=11346, Invalid=97224, Unknown=0, NotChecked=0, Total=108570 [2023-02-17 09:08:47,959 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1314 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 9591 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 10040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 9591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:08:47,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 1753 Invalid, 10040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 9591 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-02-17 09:08:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-02-17 09:08:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 523. [2023-02-17 09:08:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 419 states have (on average 1.0119331742243436) internal successors, (424), 418 states have internal predecessors, (424), 6 states have call successors, (6), 4 states have call predecessors, (6), 97 states have return successors, (162), 100 states have call predecessors, (162), 5 states have call successors, (162) [2023-02-17 09:08:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 592 transitions. [2023-02-17 09:08:47,981 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 592 transitions. Word has length 372 [2023-02-17 09:08:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:08:47,981 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 592 transitions. [2023-02-17 09:08:47,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 170 states have (on average 2.2941176470588234) internal successors, (390), 169 states have internal predecessors, (390), 8 states have call successors, (10), 3 states have call predecessors, (10), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) [2023-02-17 09:08:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 592 transitions. [2023-02-17 09:08:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-02-17 09:08:47,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:08:47,985 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 35, 35, 35, 35, 34, 33, 33, 33, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:08:47,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-17 09:08:48,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:08:48,194 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:08:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:08:48,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2091105962, now seen corresponding path program 6 times [2023-02-17 09:08:48,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:08:48,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588482121] [2023-02-17 09:08:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:08:48,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:08:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:08:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-17 09:08:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:55,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:58,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:08:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:00,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:03,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:03,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:03,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:04,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:04,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:09:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:09:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6489 backedges. 468 proven. 3109 refuted. 0 times theorem prover too weak. 2912 trivial. 0 not checked. [2023-02-17 09:09:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:09:05,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588482121] [2023-02-17 09:09:05,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588482121] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:09:05,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313247135] [2023-02-17 09:09:05,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 09:09:05,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:09:05,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:09:05,449 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:09:05,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-17 09:09:08,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2023-02-17 09:09:08,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:09:08,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 138 conjunts are in the unsatisfiable core [2023-02-17 09:09:08,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:09:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6489 backedges. 6 proven. 3577 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2023-02-17 09:09:10,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:09:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6489 backedges. 156 proven. 3579 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2023-02-17 09:09:38,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313247135] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:09:38,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:09:38,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 72, 74] total 179 [2023-02-17 09:09:38,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617948047] [2023-02-17 09:09:38,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:09:38,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2023-02-17 09:09:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:09:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2023-02-17 09:09:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3154, Invalid=29066, Unknown=0, NotChecked=0, Total=32220 [2023-02-17 09:09:38,877 INFO L87 Difference]: Start difference. First operand 523 states and 592 transitions. Second operand has 180 states, 179 states have (on average 2.3910614525139664) internal successors, (428), 177 states have internal predecessors, (428), 13 states have call successors, (18), 4 states have call predecessors, (18), 67 states have return successors, (102), 102 states have call predecessors, (102), 11 states have call successors, (102) [2023-02-17 09:10:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:10:05,885 INFO L93 Difference]: Finished difference Result 1371 states and 1567 transitions. [2023-02-17 09:10:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-02-17 09:10:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 179 states have (on average 2.3910614525139664) internal successors, (428), 177 states have internal predecessors, (428), 13 states have call successors, (18), 4 states have call predecessors, (18), 67 states have return successors, (102), 102 states have call predecessors, (102), 11 states have call successors, (102) Word has length 390 [2023-02-17 09:10:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:10:05,902 INFO L225 Difference]: With dead ends: 1371 [2023-02-17 09:10:05,902 INFO L226 Difference]: Without dead ends: 1178 [2023-02-17 09:10:05,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1299 GetRequests, 647 SyntacticMatches, 97 SemanticMatches, 555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106311 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=26188, Invalid=283504, Unknown=0, NotChecked=0, Total=309692 [2023-02-17 09:10:05,934 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 2667 mSDsluCounter, 4287 mSDsCounter, 0 mSdLazyCounter, 20885 mSolverCounterSat, 1673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 22558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1673 IncrementalHoareTripleChecker+Valid, 20885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:10:05,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 4389 Invalid, 22558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1673 Valid, 20885 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-02-17 09:10:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-02-17 09:10:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 683. [2023-02-17 09:10:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 547 states have (on average 1.0091407678244972) internal successors, (552), 546 states have internal predecessors, (552), 6 states have call successors, (6), 4 states have call predecessors, (6), 129 states have return successors, (194), 132 states have call predecessors, (194), 5 states have call successors, (194) [2023-02-17 09:10:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 752 transitions. [2023-02-17 09:10:05,949 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 752 transitions. Word has length 390 [2023-02-17 09:10:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:10:05,951 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 752 transitions. [2023-02-17 09:10:05,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 179 states have (on average 2.3910614525139664) internal successors, (428), 177 states have internal predecessors, (428), 13 states have call successors, (18), 4 states have call predecessors, (18), 67 states have return successors, (102), 102 states have call predecessors, (102), 11 states have call successors, (102) [2023-02-17 09:10:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 752 transitions. [2023-02-17 09:10:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-02-17 09:10:05,961 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:10:05,962 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 64, 64, 64, 64, 64, 64, 63, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:10:05,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-17 09:10:06,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:10:06,189 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 09:10:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:10:06,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1780101999, now seen corresponding path program 6 times [2023-02-17 09:10:06,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:10:06,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263491395] [2023-02-17 09:10:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:10:06,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:10:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:10:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 09:10:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:10:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:10:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:10:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:10:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:10:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:10:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:10:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:10:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:10:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:10:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:11:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:11:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:11:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:11:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:11:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 09:11:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat