./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 3dbbec33 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-?-3dbbec3 [2023-02-14 14:08:58,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:08:58,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:08:58,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:08:58,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:08:58,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:08:58,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:08:58,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:08:58,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:08:58,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:08:58,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:08:58,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:08:58,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:08:58,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:08:58,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:08:58,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:08:58,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:08:58,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:08:58,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:08:58,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:08:58,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:08:58,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:08:58,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:08:58,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:08:58,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:08:58,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:08:58,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:08:58,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:08:58,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:08:58,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:08:58,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:08:58,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:08:58,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:08:58,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:08:58,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:08:58,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:08:58,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:08:58,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:08:58,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:08:58,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:08:58,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:08:58,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-14 14:08:58,903 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:08:58,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:08:58,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:08:58,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:08:58,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 14:08:58,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 14:08:58,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:08:58,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:08:58,905 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:08:58,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:08:58,906 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 14:08:58,906 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:08:58,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:08:58,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 14:08:58,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:08:58,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 14:08:58,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 14:08:58,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 14:08:58,907 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-14 14:08:58,908 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 14:08:58,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 14:08:58,908 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:08:58,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 14:08:58,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:08:58,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:08:58,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 14:08:58,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:08:58,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:08:58,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 14:08:58,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 14:08:58,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:08:58,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 14:08:58,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 14:08:58,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 14:08:58,910 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 14:08:58,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 14:08:58,910 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 14:08:58,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-02-14 14:08:59,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:08:59,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:08:59,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:08:59,159 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:08:59,159 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:08:59,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-14 14:09:00,076 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:09:00,269 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:09:00,269 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-14 14:09:00,273 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d68324e50/20d7a8cdde34411489383b95672aed59/FLAG9c5f2f312 [2023-02-14 14:09:00,284 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d68324e50/20d7a8cdde34411489383b95672aed59 [2023-02-14 14:09:00,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:09:00,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:09:00,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:09:00,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:09:00,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:09:00,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5150dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00, skipping insertion in model container [2023-02-14 14:09:00,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:09:00,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:09:00,406 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] [2023-02-14 14:09:00,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:09:00,413 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:09:00,423 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] [2023-02-14 14:09:00,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:09:00,434 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:09:00,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00 WrapperNode [2023-02-14 14:09:00,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:09:00,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:09:00,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:09:00,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:09:00,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,462 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-14 14:09:00,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:09:00,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:09:00,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:09:00,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:09:00,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:09:00,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:09:00,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:09:00,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:09:00,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (1/1) ... [2023-02-14 14:09:00,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:09:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:00,517 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) [2023-02-14 14:09:00,519 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 [2023-02-14 14:09:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 14:09:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-14 14:09:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-14 14:09:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:09:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:09:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 14:09:00,587 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:09:00,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:09:00,702 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:09:00,707 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:09:00,708 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-14 14:09:00,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:09:00 BoogieIcfgContainer [2023-02-14 14:09:00,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:09:00,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 14:09:00,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 14:09:00,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 14:09:00,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:09:00" (1/3) ... [2023-02-14 14:09:00,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78264dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:09:00, skipping insertion in model container [2023-02-14 14:09:00,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:09:00" (2/3) ... [2023-02-14 14:09:00,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78264dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:09:00, skipping insertion in model container [2023-02-14 14:09:00,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:09:00" (3/3) ... [2023-02-14 14:09:00,719 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-02-14 14:09:00,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 14:09:00,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-14 14:09:00,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 14:09:00,815 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;@15685c91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 14:09:00,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-14 14:09:00,819 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) [2023-02-14 14:09:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 14:09:00,823 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:00,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:00,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:00,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:00,827 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2023-02-14 14:09:00,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:00,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585659204] [2023-02-14 14:09:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:00,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:00,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585659204] [2023-02-14 14:09:00,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585659204] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:09:00,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:09:00,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:09:00,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599643814] [2023-02-14 14:09:00,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:09:00,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:09:00,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:09:00,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:09:00,983 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 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-02-14 14:09:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:01,046 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-02-14 14:09:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:09:01,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-02-14 14:09:01,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:01,056 INFO L225 Difference]: With dead ends: 39 [2023-02-14 14:09:01,057 INFO L226 Difference]: Without dead ends: 29 [2023-02-14 14:09:01,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:09:01,063 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:01,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:09:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-14 14:09:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-02-14 14:09:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 14:09:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-02-14 14:09:01,089 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2023-02-14 14:09:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:01,090 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-02-14 14:09:01,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-02-14 14:09:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-02-14 14:09:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 14:09:01,090 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:01,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 14:09:01,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1971761717, now seen corresponding path program 1 times [2023-02-14 14:09:01,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:01,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753242519] [2023-02-14 14:09:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:01,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:01,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753242519] [2023-02-14 14:09:01,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753242519] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:09:01,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:09:01,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:09:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489566229] [2023-02-14 14:09:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:09:01,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:09:01,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:01,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:09:01,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:09:01,200 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:09:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:01,262 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2023-02-14 14:09:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:09:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-14 14:09:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:01,263 INFO L225 Difference]: With dead ends: 64 [2023-02-14 14:09:01,263 INFO L226 Difference]: Without dead ends: 42 [2023-02-14 14:09:01,264 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 [2023-02-14 14:09:01,265 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:01,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 57 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:09:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-14 14:09:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2023-02-14 14:09:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 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) [2023-02-14 14:09:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-02-14 14:09:01,272 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 9 [2023-02-14 14:09:01,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:01,273 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-02-14 14:09:01,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:09:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-02-14 14:09:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 14:09:01,274 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:01,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:01,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 14:09:01,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash 995288596, now seen corresponding path program 1 times [2023-02-14 14:09:01,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:01,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889196031] [2023-02-14 14:09:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:01,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:01,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:01,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889196031] [2023-02-14 14:09:01,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889196031] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:09:01,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:09:01,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:09:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661326196] [2023-02-14 14:09:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:09:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:09:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:09:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:09:01,329 INFO L87 Difference]: Start difference. First operand 37 states and 45 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) [2023-02-14 14:09:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:01,383 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-02-14 14:09:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:09:01,384 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 [2023-02-14 14:09:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:01,385 INFO L225 Difference]: With dead ends: 58 [2023-02-14 14:09:01,385 INFO L226 Difference]: Without dead ends: 57 [2023-02-14 14:09:01,385 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 [2023-02-14 14:09:01,386 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:01,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 56 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:09:01,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-14 14:09:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-02-14 14:09:01,393 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) [2023-02-14 14:09:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-02-14 14:09:01,394 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 10 [2023-02-14 14:09:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:01,395 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-02-14 14:09:01,395 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) [2023-02-14 14:09:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-02-14 14:09:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 14:09:01,396 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:01,396 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:01,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 14:09:01,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1452689498, now seen corresponding path program 1 times [2023-02-14 14:09:01,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:01,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367281752] [2023-02-14 14:09:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:01,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367281752] [2023-02-14 14:09:01,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367281752] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:09:01,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:09:01,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:09:01,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697676802] [2023-02-14 14:09:01,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:09:01,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:09:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:01,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:09:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:09:01,450 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) [2023-02-14 14:09:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:01,510 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-02-14 14:09:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:09:01,511 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 [2023-02-14 14:09:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:01,512 INFO L225 Difference]: With dead ends: 77 [2023-02-14 14:09:01,512 INFO L226 Difference]: Without dead ends: 76 [2023-02-14 14:09:01,514 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 [2023-02-14 14:09:01,515 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 [2023-02-14 14:09:01,516 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] [2023-02-14 14:09:01,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-14 14:09:01,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-02-14 14:09:01,526 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) [2023-02-14 14:09:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-02-14 14:09:01,527 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 15 [2023-02-14 14:09:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:01,528 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-02-14 14:09:01,528 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) [2023-02-14 14:09:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-02-14 14:09:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 14:09:01,529 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:01,529 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:01,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 14:09:01,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:01,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:01,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1005455158, now seen corresponding path program 1 times [2023-02-14 14:09:01,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:01,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740665328] [2023-02-14 14:09:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:01,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:01,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:01,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740665328] [2023-02-14 14:09:01,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740665328] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:09:01,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:09:01,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:09:01,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350337218] [2023-02-14 14:09:01,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:09:01,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:09:01,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:09:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:09:01,584 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) [2023-02-14 14:09:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:01,639 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2023-02-14 14:09:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:09:01,639 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 [2023-02-14 14:09:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:01,641 INFO L225 Difference]: With dead ends: 121 [2023-02-14 14:09:01,641 INFO L226 Difference]: Without dead ends: 85 [2023-02-14 14:09:01,641 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 [2023-02-14 14:09:01,642 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 [2023-02-14 14:09:01,643 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] [2023-02-14 14:09:01,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-14 14:09:01,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2023-02-14 14:09:01,651 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) [2023-02-14 14:09:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2023-02-14 14:09:01,652 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 16 [2023-02-14 14:09:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:01,652 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2023-02-14 14:09:01,653 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) [2023-02-14 14:09:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2023-02-14 14:09:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 14:09:01,653 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:01,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 14:09:01,654 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1104121313, now seen corresponding path program 1 times [2023-02-14 14:09:01,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:01,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725074799] [2023-02-14 14:09:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:01,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:01,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:01,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725074799] [2023-02-14 14:09:01,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725074799] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:09:01,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:09:01,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:09:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443442777] [2023-02-14 14:09:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:09:01,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:09:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:09:01,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:09:01,697 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) [2023-02-14 14:09:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:01,750 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-02-14 14:09:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:09:01,751 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 [2023-02-14 14:09:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:01,754 INFO L225 Difference]: With dead ends: 102 [2023-02-14 14:09:01,754 INFO L226 Difference]: Without dead ends: 101 [2023-02-14 14:09:01,755 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 [2023-02-14 14:09:01,759 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 [2023-02-14 14:09:01,762 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] [2023-02-14 14:09:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-14 14:09:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-02-14 14:09:01,780 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) [2023-02-14 14:09:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2023-02-14 14:09:01,784 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 17 [2023-02-14 14:09:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:01,785 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2023-02-14 14:09:01,785 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) [2023-02-14 14:09:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2023-02-14 14:09:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 14:09:01,786 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:01,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:01,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 14:09:01,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:01,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2023-02-14 14:09:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:01,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421560609] [2023-02-14 14:09:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:01,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 14:09:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:01,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421560609] [2023-02-14 14:09:01,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421560609] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:01,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837265765] [2023-02-14 14:09:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:01,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:01,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:01,931 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) [2023-02-14 14:09:01,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 14:09:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:01,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:09:01,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:02,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:02,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837265765] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:02,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:02,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-14 14:09:02,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613261791] [2023-02-14 14:09:02,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:02,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 14:09:02,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:02,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 14:09:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-14 14:09:02,082 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) [2023-02-14 14:09:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:02,183 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-02-14 14:09:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 14:09:02,184 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 [2023-02-14 14:09:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:02,185 INFO L225 Difference]: With dead ends: 152 [2023-02-14 14:09:02,201 INFO L226 Difference]: Without dead ends: 151 [2023-02-14 14:09:02,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-14 14:09:02,203 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:02,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 134 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:09:02,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-14 14:09:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2023-02-14 14:09:02,231 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) [2023-02-14 14:09:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-02-14 14:09:02,232 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 18 [2023-02-14 14:09:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:02,232 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-02-14 14:09:02,233 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) [2023-02-14 14:09:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-02-14 14:09:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 14:09:02,235 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:02,235 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:02,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-14 14:09:02,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:02,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash 922018386, now seen corresponding path program 1 times [2023-02-14 14:09:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:02,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356756055] [2023-02-14 14:09:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:02,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 14:09:02,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:02,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356756055] [2023-02-14 14:09:02,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356756055] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:09:02,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:09:02,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 14:09:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665686465] [2023-02-14 14:09:02,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:09:02,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:09:02,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:02,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:09:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:09:02,504 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) [2023-02-14 14:09:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:02,535 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2023-02-14 14:09:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 14:09:02,536 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 [2023-02-14 14:09:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:02,536 INFO L225 Difference]: With dead ends: 163 [2023-02-14 14:09:02,536 INFO L226 Difference]: Without dead ends: 59 [2023-02-14 14:09:02,537 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 [2023-02-14 14:09:02,538 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:02,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 53 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:09:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-14 14:09:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-14 14:09:02,541 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) [2023-02-14 14:09:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-14 14:09:02,542 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 20 [2023-02-14 14:09:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:02,542 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-14 14:09:02,542 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) [2023-02-14 14:09:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-14 14:09:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 14:09:02,543 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:02,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:02,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 14:09:02,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:02,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:02,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2023-02-14 14:09:02,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:02,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493599309] [2023-02-14 14:09:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:02,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:02,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 14:09:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:02,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493599309] [2023-02-14 14:09:02,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493599309] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925287308] [2023-02-14 14:09:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:02,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:02,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:02,621 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) [2023-02-14 14:09:02,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 14:09:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:02,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 14:09:02,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:02,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:09:02,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925287308] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:02,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:02,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-02-14 14:09:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158490066] [2023-02-14 14:09:02,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 14:09:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 14:09:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-14 14:09:02,790 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) [2023-02-14 14:09:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:02,859 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-02-14 14:09:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 14:09:02,860 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 [2023-02-14 14:09:02,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:02,860 INFO L225 Difference]: With dead ends: 65 [2023-02-14 14:09:02,860 INFO L226 Difference]: Without dead ends: 64 [2023-02-14 14:09:02,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-02-14 14:09:02,861 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:02,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 102 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:09:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-14 14:09:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-02-14 14:09:02,864 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) [2023-02-14 14:09:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-02-14 14:09:02,865 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 19 [2023-02-14 14:09:02,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:02,865 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-02-14 14:09:02,865 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) [2023-02-14 14:09:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-02-14 14:09:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 14:09:02,866 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:02,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:02,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:03,077 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,SelfDestructingSolverStorable8 [2023-02-14 14:09:03,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:03,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:03,078 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2023-02-14 14:09:03,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:03,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680809543] [2023-02-14 14:09:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:03,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 14:09:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-14 14:09:03,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680809543] [2023-02-14 14:09:03,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680809543] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767577041] [2023-02-14 14:09:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:03,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:03,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:03,168 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) [2023-02-14 14:09:03,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 14:09:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:03,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:09:03,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 14:09:03,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 14:09:03,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767577041] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:03,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:03,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-14 14:09:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333043942] [2023-02-14 14:09:03,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 14:09:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 14:09:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-14 14:09:03,308 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) [2023-02-14 14:09:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:03,398 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-02-14 14:09:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 14:09:03,399 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 [2023-02-14 14:09:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:03,409 INFO L225 Difference]: With dead ends: 71 [2023-02-14 14:09:03,409 INFO L226 Difference]: Without dead ends: 70 [2023-02-14 14:09:03,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-14 14:09:03,410 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:03,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 128 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:09:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-14 14:09:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2023-02-14 14:09:03,413 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) [2023-02-14 14:09:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-02-14 14:09:03,414 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 25 [2023-02-14 14:09:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:03,414 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-02-14 14:09:03,414 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) [2023-02-14 14:09:03,414 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-02-14 14:09:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-14 14:09:03,415 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:03,415 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] [2023-02-14 14:09:03,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-14 14:09:03,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:03,620 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:03,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2023-02-14 14:09:03,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:03,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030214351] [2023-02-14 14:09:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:03,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 14:09:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 14:09:03,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:03,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030214351] [2023-02-14 14:09:03,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030214351] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:03,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24254109] [2023-02-14 14:09:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:03,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:03,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:03,733 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) [2023-02-14 14:09:03,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 14:09:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:03,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 14:09:03,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 14:09:03,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 14:09:03,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24254109] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:03,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:03,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-02-14 14:09:03,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888338542] [2023-02-14 14:09:03,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:03,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 14:09:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 14:09:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-14 14:09:03,884 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) [2023-02-14 14:09:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:04,015 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2023-02-14 14:09:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 14:09:04,016 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 [2023-02-14 14:09:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:04,016 INFO L225 Difference]: With dead ends: 93 [2023-02-14 14:09:04,016 INFO L226 Difference]: Without dead ends: 60 [2023-02-14 14:09:04,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-14 14:09:04,017 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:04,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 97 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:09:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-14 14:09:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-02-14 14:09:04,021 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) [2023-02-14 14:09:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-14 14:09:04,021 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 26 [2023-02-14 14:09:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:04,022 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-14 14:09:04,022 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) [2023-02-14 14:09:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-14 14:09:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-14 14:09:04,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:04,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:04,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:04,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:04,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:04,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1713074993, now seen corresponding path program 1 times [2023-02-14 14:09:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:04,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226617712] [2023-02-14 14:09:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:04,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 14:09:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 14:09:04,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:04,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226617712] [2023-02-14 14:09:04,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226617712] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:04,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102065476] [2023-02-14 14:09:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:04,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:04,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:04,312 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) [2023-02-14 14:09:04,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 14:09:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:04,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 14:09:04,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 14:09:04,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 14:09:04,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102065476] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:04,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:04,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-14 14:09:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787532308] [2023-02-14 14:09:04,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 14:09:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 14:09:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-14 14:09:04,589 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) [2023-02-14 14:09:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:04,805 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2023-02-14 14:09:04,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-14 14:09:04,805 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 [2023-02-14 14:09:04,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:04,806 INFO L225 Difference]: With dead ends: 91 [2023-02-14 14:09:04,806 INFO L226 Difference]: Without dead ends: 90 [2023-02-14 14:09:04,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-02-14 14:09:04,807 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 108 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:04,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 125 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:09:04,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-14 14:09:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2023-02-14 14:09:04,810 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) [2023-02-14 14:09:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2023-02-14 14:09:04,810 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 30 [2023-02-14 14:09:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:04,810 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2023-02-14 14:09:04,810 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) [2023-02-14 14:09:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2023-02-14 14:09:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 14:09:04,811 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:04,811 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] [2023-02-14 14:09:04,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:05,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-14 14:09:05,018 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:05,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1774219858, now seen corresponding path program 1 times [2023-02-14 14:09:05,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:05,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237159505] [2023-02-14 14:09:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:05,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 14:09:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 14:09:05,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:05,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237159505] [2023-02-14 14:09:05,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237159505] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:05,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593206658] [2023-02-14 14:09:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:05,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:05,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:05,174 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) [2023-02-14 14:09:05,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 14:09:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:05,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 14:09:05,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 14:09:05,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-14 14:09:05,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593206658] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:05,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:05,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2023-02-14 14:09:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802707684] [2023-02-14 14:09:05,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:05,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 14:09:05,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:05,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 14:09:05,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-02-14 14:09:05,417 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) [2023-02-14 14:09:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:05,636 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2023-02-14 14:09:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-14 14:09:05,636 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 [2023-02-14 14:09:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:05,638 INFO L225 Difference]: With dead ends: 136 [2023-02-14 14:09:05,638 INFO L226 Difference]: Without dead ends: 129 [2023-02-14 14:09:05,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2023-02-14 14:09:05,640 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 145 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:05,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 92 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:09:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-14 14:09:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 73. [2023-02-14 14:09:05,660 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) [2023-02-14 14:09:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2023-02-14 14:09:05,661 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 37 [2023-02-14 14:09:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:05,661 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2023-02-14 14:09:05,661 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) [2023-02-14 14:09:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2023-02-14 14:09:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-14 14:09:05,663 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:05,663 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:05,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:05,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:05,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash -181019443, now seen corresponding path program 2 times [2023-02-14 14:09:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:05,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480518279] [2023-02-14 14:09:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:05,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 14:09:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:06,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-14 14:09:06,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:06,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480518279] [2023-02-14 14:09:06,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480518279] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:06,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622873009] [2023-02-14 14:09:06,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:09:06,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:06,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:06,169 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) [2023-02-14 14:09:06,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 14:09:06,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 14:09:06,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:09:06,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 14:09:06,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-14 14:09:06,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 57 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-14 14:09:06,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622873009] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:06,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:06,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2023-02-14 14:09:06,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864188655] [2023-02-14 14:09:06,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-14 14:09:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-14 14:09:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-02-14 14:09:06,881 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, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-02-14 14:09:07,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:07,354 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2023-02-14 14:09:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-14 14:09:07,355 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, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 52 [2023-02-14 14:09:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:07,356 INFO L225 Difference]: With dead ends: 145 [2023-02-14 14:09:07,356 INFO L226 Difference]: Without dead ends: 144 [2023-02-14 14:09:07,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2023-02-14 14:09:07,357 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 191 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:07,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 157 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:09:07,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-14 14:09:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2023-02-14 14:09:07,363 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) [2023-02-14 14:09:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2023-02-14 14:09:07,364 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 52 [2023-02-14 14:09:07,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:07,364 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2023-02-14 14:09:07,364 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, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-02-14 14:09:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2023-02-14 14:09:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-14 14:09:07,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:07,365 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] [2023-02-14 14:09:07,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:07,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:07,571 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:07,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash 650575638, now seen corresponding path program 2 times [2023-02-14 14:09:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533559660] [2023-02-14 14:09:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 14:09:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:07,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 14:09:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:07,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533559660] [2023-02-14 14:09:07,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533559660] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:07,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255078270] [2023-02-14 14:09:07,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:09:07,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:07,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:07,656 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) [2023-02-14 14:09:07,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 14:09:07,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 14:09:07,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:09:07,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 14:09:07,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 14:09:07,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 14:09:07,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255078270] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:07,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:07,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-14 14:09:07,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461547310] [2023-02-14 14:09:07,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:07,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 14:09:07,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 14:09:07,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-14 14:09:07,953 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) [2023-02-14 14:09:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:08,162 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-02-14 14:09:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-14 14:09:08,163 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 [2023-02-14 14:09:08,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:08,164 INFO L225 Difference]: With dead ends: 116 [2023-02-14 14:09:08,164 INFO L226 Difference]: Without dead ends: 109 [2023-02-14 14:09:08,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2023-02-14 14:09:08,165 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 89 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:08,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 190 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:09:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-14 14:09:08,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-02-14 14:09:08,168 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) [2023-02-14 14:09:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2023-02-14 14:09:08,169 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 48 [2023-02-14 14:09:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:08,169 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2023-02-14 14:09:08,169 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) [2023-02-14 14:09:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-02-14 14:09:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-14 14:09:08,170 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:08,170 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] [2023-02-14 14:09:08,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:08,374 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,SelfDestructingSolverStorable14 [2023-02-14 14:09:08,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1989693396, now seen corresponding path program 3 times [2023-02-14 14:09:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:08,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063915506] [2023-02-14 14:09:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 14:09:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 119 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-14 14:09:08,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:08,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063915506] [2023-02-14 14:09:08,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063915506] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:08,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305475075] [2023-02-14 14:09:08,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 14:09:08,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:08,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:08,615 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) [2023-02-14 14:09:08,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 14:09:08,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-14 14:09:08,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:09:08,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 14:09:08,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 58 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-14 14:09:08,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 68 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-14 14:09:09,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305475075] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:09,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:09,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2023-02-14 14:09:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418204029] [2023-02-14 14:09:09,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:09,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-14 14:09:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-14 14:09:09,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-02-14 14:09:09,413 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-14 14:09:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:10,431 INFO L93 Difference]: Finished difference Result 222 states and 251 transitions. [2023-02-14 14:09:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-14 14:09:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 70 [2023-02-14 14:09:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:10,432 INFO L225 Difference]: With dead ends: 222 [2023-02-14 14:09:10,432 INFO L226 Difference]: Without dead ends: 197 [2023-02-14 14:09:10,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=913, Invalid=4637, Unknown=0, NotChecked=0, Total=5550 [2023-02-14 14:09:10,434 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 306 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:10,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 169 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 14:09:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-14 14:09:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 123. [2023-02-14 14:09:10,438 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) [2023-02-14 14:09:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2023-02-14 14:09:10,439 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 70 [2023-02-14 14:09:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:10,439 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2023-02-14 14:09:10,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-14 14:09:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2023-02-14 14:09:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-02-14 14:09:10,440 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:10,440 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:10,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:10,645 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,SelfDestructingSolverStorable15 [2023-02-14 14:09:10,645 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash -916650905, now seen corresponding path program 3 times [2023-02-14 14:09:10,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:10,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227192183] [2023-02-14 14:09:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-14 14:09:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:11,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 14:09:11,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:11,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227192183] [2023-02-14 14:09:11,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227192183] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:11,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202435815] [2023-02-14 14:09:11,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 14:09:11,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:11,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:11,481 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) [2023-02-14 14:09:11,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 14:09:11,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-14 14:09:11,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:09:11,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-14 14:09:11,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 14:09:11,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 30 proven. 289 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-14 14:09:14,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202435815] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:14,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:14,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 50 [2023-02-14 14:09:14,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051221519] [2023-02-14 14:09:14,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-14 14:09:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:14,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-14 14:09:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2023-02-14 14:09:14,841 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) [2023-02-14 14:09:16,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:16,149 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2023-02-14 14:09:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-14 14:09:16,150 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 [2023-02-14 14:09:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:16,151 INFO L225 Difference]: With dead ends: 237 [2023-02-14 14:09:16,151 INFO L226 Difference]: Without dead ends: 236 [2023-02-14 14:09:16,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 197 SyntacticMatches, 9 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1122, Invalid=6888, Unknown=0, NotChecked=0, Total=8010 [2023-02-14 14:09:16,153 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 496 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:16,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 299 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-14 14:09:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-14 14:09:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 163. [2023-02-14 14:09:16,159 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) [2023-02-14 14:09:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 184 transitions. [2023-02-14 14:09:16,160 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 184 transitions. Word has length 108 [2023-02-14 14:09:16,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:16,160 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 184 transitions. [2023-02-14 14:09:16,161 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) [2023-02-14 14:09:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 184 transitions. [2023-02-14 14:09:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-14 14:09:16,163 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:16,163 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] [2023-02-14 14:09:16,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:16,367 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,SelfDestructingSolverStorable16 [2023-02-14 14:09:16,367 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1138144878, now seen corresponding path program 4 times [2023-02-14 14:09:16,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:16,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106176086] [2023-02-14 14:09:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:16,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:16,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-14 14:09:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:16,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-14 14:09:17,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:17,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106176086] [2023-02-14 14:09:17,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106176086] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:17,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085781256] [2023-02-14 14:09:17,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 14:09:17,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:17,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:17,202 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) [2023-02-14 14:09:17,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 14:09:17,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 14:09:17,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:09:17,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-14 14:09:17,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-14 14:09:17,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 36 proven. 423 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-02-14 14:09:20,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085781256] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:20,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:20,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 26] total 57 [2023-02-14 14:09:20,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614453318] [2023-02-14 14:09:20,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:20,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-14 14:09:20,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:20,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-14 14:09:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2023-02-14 14:09:20,666 INFO L87 Difference]: Start difference. First operand 163 states and 184 transitions. Second operand has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (14), 3 states have call predecessors, (14), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2023-02-14 14:09:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:22,308 INFO L93 Difference]: Finished difference Result 330 states and 369 transitions. [2023-02-14 14:09:22,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-02-14 14:09:22,309 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (14), 3 states have call predecessors, (14), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) Word has length 126 [2023-02-14 14:09:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:22,311 INFO L225 Difference]: With dead ends: 330 [2023-02-14 14:09:22,311 INFO L226 Difference]: Without dead ends: 302 [2023-02-14 14:09:22,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 234 SyntacticMatches, 9 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4075 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1872, Invalid=12890, Unknown=0, NotChecked=0, Total=14762 [2023-02-14 14:09:22,314 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 781 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:22,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 467 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-14 14:09:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-02-14 14:09:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 267. [2023-02-14 14:09:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 214 states have (on average 1.0327102803738317) internal successors, (221), 213 states have internal predecessors, (221), 9 states have call successors, (9), 6 states have call predecessors, (9), 43 states have return successors, (61), 47 states have call predecessors, (61), 7 states have call successors, (61) [2023-02-14 14:09:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 291 transitions. [2023-02-14 14:09:22,327 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 291 transitions. Word has length 126 [2023-02-14 14:09:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:22,327 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 291 transitions. [2023-02-14 14:09:22,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (14), 3 states have call predecessors, (14), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2023-02-14 14:09:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 291 transitions. [2023-02-14 14:09:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-02-14 14:09:22,329 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:22,329 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:22,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:22,534 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,SelfDestructingSolverStorable17 [2023-02-14 14:09:22,535 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:22,536 INFO L85 PathProgramCache]: Analyzing trace with hash 245585264, now seen corresponding path program 5 times [2023-02-14 14:09:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:22,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78325713] [2023-02-14 14:09:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-14 14:09:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 219 proven. 247 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-02-14 14:09:23,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:23,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78325713] [2023-02-14 14:09:23,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78325713] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:23,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053313033] [2023-02-14 14:09:23,392 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 14:09:23,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:23,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:23,393 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) [2023-02-14 14:09:23,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-14 14:09:23,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-02-14 14:09:23,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:09:23,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-14 14:09:23,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 478 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-02-14 14:09:23,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 522 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-02-14 14:09:28,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053313033] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:28,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:28,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 30] total 66 [2023-02-14 14:09:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472379905] [2023-02-14 14:09:28,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-02-14 14:09:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-02-14 14:09:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=3994, Unknown=0, NotChecked=0, Total=4422 [2023-02-14 14:09:28,067 INFO L87 Difference]: Start difference. First operand 267 states and 291 transitions. Second operand has 67 states, 66 states have (on average 2.787878787878788) internal successors, (184), 64 states have internal predecessors, (184), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) [2023-02-14 14:09:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:31,734 INFO L93 Difference]: Finished difference Result 522 states and 585 transitions. [2023-02-14 14:09:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-02-14 14:09:31,734 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.787878787878788) internal successors, (184), 64 states have internal predecessors, (184), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) Word has length 136 [2023-02-14 14:09:31,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:31,736 INFO L225 Difference]: With dead ends: 522 [2023-02-14 14:09:31,736 INFO L226 Difference]: Without dead ends: 467 [2023-02-14 14:09:31,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 246 SyntacticMatches, 9 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7844 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3422, Invalid=23968, Unknown=0, NotChecked=0, Total=27390 [2023-02-14 14:09:31,743 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 881 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:31,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 466 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-14 14:09:31,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-14 14:09:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 213. [2023-02-14 14:09:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 171 states have (on average 1.0292397660818713) internal successors, (176), 170 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 35 states have return successors, (52), 38 states have call predecessors, (52), 5 states have call successors, (52) [2023-02-14 14:09:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2023-02-14 14:09:31,753 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 136 [2023-02-14 14:09:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:31,753 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2023-02-14 14:09:31,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.787878787878788) internal successors, (184), 64 states have internal predecessors, (184), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) [2023-02-14 14:09:31,754 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2023-02-14 14:09:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-02-14 14:09:31,757 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:31,757 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:31,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:31,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:31,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash 116292191, now seen corresponding path program 4 times [2023-02-14 14:09:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:31,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693776197] [2023-02-14 14:09:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-14 14:09:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:33,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-14 14:09:35,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:09:35,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693776197] [2023-02-14 14:09:35,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693776197] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:09:35,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697464953] [2023-02-14 14:09:35,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 14:09:35,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:09:35,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:09:35,039 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) [2023-02-14 14:09:35,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-14 14:09:35,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 14:09:35,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:09:35,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-14 14:09:35,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:09:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-14 14:09:35,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:09:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 70 proven. 909 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2023-02-14 14:09:55,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697464953] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:09:55,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:09:55,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2023-02-14 14:09:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303636514] [2023-02-14 14:09:55,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:09:55,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-02-14 14:09:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:09:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-02-14 14:09:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2023-02-14 14:09:55,028 INFO L87 Difference]: Start difference. First operand 213 states and 234 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, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-02-14 14:09:57,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:09:57,810 INFO L93 Difference]: Finished difference Result 445 states and 512 transitions. [2023-02-14 14:09:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-14 14:09:57,810 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, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) Word has length 196 [2023-02-14 14:09:57,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:09:57,815 INFO L225 Difference]: With dead ends: 445 [2023-02-14 14:09:57,815 INFO L226 Difference]: Without dead ends: 444 [2023-02-14 14:09:57,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 357 SyntacticMatches, 17 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9068 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3378, Invalid=25352, Unknown=0, NotChecked=0, Total=28730 [2023-02-14 14:09:57,819 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 667 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-14 14:09:57,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 588 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-14 14:09:57,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-02-14 14:09:57,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 293. [2023-02-14 14:09:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 235 states have (on average 1.0212765957446808) internal successors, (240), 234 states have internal predecessors, (240), 6 states have call successors, (6), 4 states have call predecessors, (6), 51 states have return successors, (84), 54 states have call predecessors, (84), 5 states have call successors, (84) [2023-02-14 14:09:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 330 transitions. [2023-02-14 14:09:57,834 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 330 transitions. Word has length 196 [2023-02-14 14:09:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:09:57,834 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 330 transitions. [2023-02-14 14:09:57,834 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, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-02-14 14:09:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 330 transitions. [2023-02-14 14:09:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-02-14 14:09:57,836 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:09:57,836 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 21, 21, 21, 21, 20, 19, 19, 19, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:09:57,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-14 14:09:58,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-02-14 14:09:58,042 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:09:58,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:09:58,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1277061724, now seen corresponding path program 6 times [2023-02-14 14:09:58,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:09:58,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690218333] [2023-02-14 14:09:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:09:58,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:09:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 14:09:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-14 14:09:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:59,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:09:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:09:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:00,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 6 proven. 1386 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2023-02-14 14:10:01,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:10:01,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690218333] [2023-02-14 14:10:01,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690218333] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:10:01,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621830617] [2023-02-14 14:10:01,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 14:10:01,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:10:01,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:10:01,789 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) [2023-02-14 14:10:01,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-14 14:10:02,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-02-14 14:10:02,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:10:02,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-14 14:10:02,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:10:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 272 proven. 1114 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2023-02-14 14:10:03,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:10:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 272 proven. 1194 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-02-14 14:10:31,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621830617] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:10:31,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:10:31,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41, 42] total 106 [2023-02-14 14:10:31,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664361448] [2023-02-14 14:10:31,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:10:31,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-02-14 14:10:31,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:10:31,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-02-14 14:10:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=10185, Unknown=0, NotChecked=0, Total=11342 [2023-02-14 14:10:31,612 INFO L87 Difference]: Start difference. First operand 293 states and 330 transitions. Second operand has 107 states, 106 states have (on average 2.481132075471698) internal successors, (263), 104 states have internal predecessors, (263), 12 states have call successors, (18), 4 states have call predecessors, (18), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) [2023-02-14 14:10:40,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:10:40,096 INFO L93 Difference]: Finished difference Result 776 states and 885 transitions. [2023-02-14 14:10:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-02-14 14:10:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 2.481132075471698) internal successors, (263), 104 states have internal predecessors, (263), 12 states have call successors, (18), 4 states have call predecessors, (18), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) Word has length 236 [2023-02-14 14:10:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:10:40,099 INFO L225 Difference]: With dead ends: 776 [2023-02-14 14:10:40,099 INFO L226 Difference]: Without dead ends: 667 [2023-02-14 14:10:40,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 436 SyntacticMatches, 18 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25264 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=8676, Invalid=72264, Unknown=0, NotChecked=0, Total=80940 [2023-02-14 14:10:40,103 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1195 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 7259 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 7819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 7259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-14 14:10:40,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1269 Invalid, 7819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 7259 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-14 14:10:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-02-14 14:10:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 383. [2023-02-14 14:10:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 307 states have (on average 1.01628664495114) internal successors, (312), 306 states have internal predecessors, (312), 6 states have call successors, (6), 4 states have call predecessors, (6), 69 states have return successors, (102), 72 states have call predecessors, (102), 5 states have call successors, (102) [2023-02-14 14:10:40,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 420 transitions. [2023-02-14 14:10:40,117 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 420 transitions. Word has length 236 [2023-02-14 14:10:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:10:40,117 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 420 transitions. [2023-02-14 14:10:40,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 2.481132075471698) internal successors, (263), 104 states have internal predecessors, (263), 12 states have call successors, (18), 4 states have call predecessors, (18), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) [2023-02-14 14:10:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 420 transitions. [2023-02-14 14:10:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-02-14 14:10:40,121 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:10:40,121 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:10:40,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-14 14:10:40,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:10:40,329 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 14:10:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:10:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1476676785, now seen corresponding path program 5 times [2023-02-14 14:10:40,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:10:40,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837671772] [2023-02-14 14:10:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:10:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:10:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 14:10:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:47,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:49,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:56,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 14:10:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 0 proven. 2731 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-14 14:10:57,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:10:57,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837671772] [2023-02-14 14:10:57,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837671772] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:10:57,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075404651] [2023-02-14 14:10:57,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 14:10:57,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:10:57,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:10:57,518 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) [2023-02-14 14:10:57,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-14 14:10:58,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2023-02-14 14:10:58,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:10:58,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 130 conjunts are in the unsatisfiable core [2023-02-14 14:10:58,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:11:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 0 proven. 2731 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-14 14:11:00,522 INFO L328 TraceCheckSpWp]: Computing backward predicates...